Add 3.12 specific tests.

scripts/releases/make-manylinux

@@ -35,19 +35,21 @@ export CCACHE_DIR="/ccache"
 # Note that changing the value of these variables invalidates configure caches
 
 GEVENT_WARNFLAGS="-Wno-strict-aliasing -Wno-comment -Wno-unused-value -Wno-unused-but-set-variable -Wno-sign-compare -Wno-parentheses -Wno-unused-function -Wno-tautological-compare -Wno-strict-prototypes -Wno-return-type -Wno-misleading-indentation"
-OPTIMIZATION_FLAGS="-pipe"
-if [ "$DOCKER_IMAGE" == "quay.io/pypa/manylinux2014_aarch64" -a -n "$GITHUB_ACTIONS" ] || [ "$DOCKER_IMAGE" == "quay.io/pypa/manylinux2014_ppc64le" -a -n "$GITHUB_ACTIONS" ] ; then
-    # Compiling with -Ofast is a no-go because of the regression it causes (#1864).
-    # The default settings have -O3, and adding -Os doesn't help much. So maybe -O1 will.
-    echo "Compiling with -O1"
-    OPTIMIZATION_FLAGS="-pipe -O1"
-    SLOW_BUILD=1
-    GEVENTTEST_SKIP_ALL=1
-    export GEVENTSETUP_DISABLE_ARES=1
+OPTIMIZATION_FLAGS="-O3 -pipe"
+if [ -n "$GITHUB_ACTIONS" ]; then
+    if [ "$DOCKER_IMAGE" == "quay.io/pypa/manylinux2014_aarch64" ] || [ "$DOCKER_IMAGE" == "quay.io/pypa/manylinux2014_ppc64le" ] || [ "$DOCKER_IMAGE" == "quay.io/pypa/manylinux2014_s390x" ] ||  [ "$DOCKER_IMAGE" == "quay.io/pypa/musllinux_1_1_aarch64" ] ; then
+        # Compiling with -Ofast is a no-go because of the regression it causes (#1864).
+        # The default settings have -O3, and adding -Os doesn't help much. So maybe -O1 will.
+        echo "Compiling with -O1"
+        OPTIMIZATION_FLAGS="-pipe -O1"
+        SLOW_BUILD=1
+        GEVENTTEST_SKIP_ALL=1
+        export GEVENTSETUP_DISABLE_ARES=1
+    fi
 else
-    echo "Compiling with -O3"
     OPTIMIZATION_FLAGS="-pipe -O3"
 fi
+echo "Compiling with $OPTIMIZATION_FLAGS"
 export CFLAGS="$OPTIMIZATION_FLAGS $GEVENT_WARNFLAGS"
 # -lrt: Needed for clock_gettime libc support on this version.
 # -pthread: Needed for pthread_atfork (cffi).

setup.py

@@ -431,6 +431,7 @@ def run_setup(ext_modules):
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
+            "Programming Language :: Python :: 3.12",
             "Programming Language :: Python :: Implementation :: CPython",
             "Programming Language :: Python :: Implementation :: PyPy",
             "Operating System :: MacOS :: MacOS X",

src/greentest/3.12/allsans.pem

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+HMj0OhQHoi8kJyMIj3+bQkbC
+-----END PRIVATE KEY-----
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            cb:2d:80:99:5a:69:52:5f
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Validity
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Oct 28 14:23:16 2037 GMT
+        Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=allsans
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (3072 bit)
+                Modulus:
+                    00:c1:1a:f8:fe:53:2f:d5:53:24:d1:9a:62:00:d5:
+                    41:04:35:38:61:d3:ea:56:38:37:2f:bd:49:64:78:
+                    8a:3e:5d:32:77:16:11:78:fd:15:63:22:60:c7:8e:
+                    8c:e5:db:c5:df:d9:3c:ca:9e:f4:09:6b:52:82:a6:
+                    a6:bb:7e:bf:1c:2f:d4:0c:c2:4e:29:1f:e4:b8:ba:
+                    5c:4e:bb:4d:81:97:76:1a:7f:1d:a8:25:55:0c:2f:
+                    7e:ef:72:22:60:fb:39:33:3f:1d:64:de:d5:c5:8d:
+                    79:2b:2c:68:d9:c0:ea:2e:7c:10:b7:02:63:ee:ab:
+                    6c:47:14:1c:c7:ae:fa:79:fc:32:11:1f:6b:25:40:
+                    53:3d:7e:95:59:cc:de:fb:81:8c:b3:c5:b6:b4:c0:
+                    27:c2:3e:90:9f:78:91:51:c9:82:96:f1:ce:cc:5e:
+                    bc:27:33:cd:98:b4:4e:d1:96:77:f6:db:b1:24:09:
+                    d3:0d:69:27:99:2d:42:31:79:5a:5c:9d:27:2a:66:
+                    5d:12:21:b4:77:60:48:95:d0:b3:c5:93:1d:30:24:
+                    59:bc:a9:41:05:53:f8:7e:d2:36:a6:83:2f:ce:37:
+                    ed:75:9e:a9:8c:96:9d:c1:8c:d8:bf:25:35:6c:6b:
+                    b3:7b:03:77:6f:74:70:bb:55:59:6b:5a:75:20:53:
+                    a3:28:4a:78:b2:2f:a8:a3:a6:e7:32:1e:d6:73:2b:
+                    69:89:cb:4b:07:47:c3:da:74:72:a8:c3:43:b8:db:
+                    7f:f9:37:c1:8a:4d:23:af:68:63:17:4e:30:1e:38:
+                    6b:3e:f7:f3:f5:65:8a:37:22:38:d0:3f:3f:cd:57:
+                    74:25:84:af:33:46:ac:45:dd:c5:b4:7a:41:c7:91:
+                    3f:bf:8d:98:c2:bd:22:a6:ea:67:5b:31:0b:a7:28:
+                    4d:56:f9:da:24:01:cf:35:e6:96:f8:f0:cc:df:d5:
+                    e5:8a:77:fe:d4:c9:47:fb:09:7b:ac:b3:20:1a:27:
+                    77:25:a5:a2:b5:b1:b6:e7:f6:6d
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Alternative Name: 
+                DNS:allsans, othername:<unsupported>, othername:<unsupported>, email:user@example.org, DNS:www.example.org, DirName:/C=XY/L=Castle Anthrax/O=Python Software Foundation/CN=dirname example, URI:https://www.python.org/, IP Address:127.0.0.1, IP Address:0:0:0:0:0:0:0:1, Registered ID:1.2.3.4.5
+            X509v3 Key Usage: critical
+                Digital Signature, Key Encipherment
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+            X509v3 Basic Constraints: critical
+                CA:FALSE
+            X509v3 Subject Key Identifier: 
+                D4:F1:D8:23:E0:A7:E9:CA:12:45:A0:0D:03:C2:25:A6:E8:65:BC:EE
+            X509v3 Authority Key Identifier: 
+                keyid:B3:8A:A0:A2:BA:71:F1:A8:24:79:D4:A4:5B:25:36:15:1E:49:C8:CD
+                DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
+                serial:CB:2D:80:99:5A:69:52:5B
+
+            Authority Information Access: 
+                CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
+                OCSP - URI:http://testca.pythontest.net/testca/ocsp/
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://testca.pythontest.net/testca/revocation.crl
+
+    Signature Algorithm: sha256WithRSAEncryption
+         70:77:d8:82:b0:f4:ab:de:84:ce:88:32:63:5e:23:0f:b6:58:
+         a2:b1:65:ff:12:22:0b:88:a6:fa:06:40:9a:e7:63:a7:5d:ae:
+         94:c5:68:3c:4b:e9:95:34:01:75:24:df:9d:6e:9b:e4:ff:3f:
+         61:97:29:7b:ab:34:2c:14:d3:01:d2:eb:fb:84:40:db:12:54:
+         7e:7a:44:bc:08:eb:9f:e2:15:0b:11:4f:25:d2:56:51:95:ad:
+         6d:ad:07:aa:6a:61:f9:39:d5:82:8c:45:31:9f:2a:ff:18:98:
+         49:0c:bb:17:ad:d5:24:d3:d1:c7:c4:10:3e:c4:79:26:58:f4:
+         c5:de:82:16:c4:c3:c4:a7:a3:62:22:41:90:36:0f:bc:4c:fd:
+         6a:18:22:f2:87:e9:07:db:b4:3d:65:00:e4:70:f9:d6:e5:a8:
+         a1:b9:c9:9d:e7:5d:78:aa:98:d5:f8:f4:fd:5c:d9:4c:d0:6d:
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+         18:36:77:36:a7:3e:80:2e:5d:54:0f:01:df:ce:9e:97:dd:c9:
+         f2:8b:59:82:c5:65:31:c8:73:20:fd:24:23:25:d8:00:df:90:
+         93:26:76:08:0a:06:a9:0e:d3:d3:4c:6f:ef:a7:fb:de:eb:2a:
+         40:b9:e4:b1:44:0c:37:ca:c6:9e:44:4a:b4:7c:2c:40:52:35:
+         bb:b3:71:28:3d:35:fd:be:c9:4f:54:b3:99:c5:5f:84:38:fb:
+         2b:fb:ea:dd:88:e8:9d:c1:9b:67:87:3d:79:7b:3d:7e:61:1f:
+         70:3c:b7:c8:4c:17:a5:0c:a3:28:c7:ab:48:11:14:f7:98:7a:
+         da:4e:fb:91:76:89:0a:a6:c6:72:e0:96:d9:f1:80:ea:68:90:
+         37:5c:c6:69:c7:d7:bc:c7:d1:ae:5b:a9:12:59:c6:e4:6c:61:
+         a9:8b:ba:51:b3:13
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

src/greentest/3.12/badcert.pem

+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
+Just bad cert data
+-----END CERTIFICATE-----
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
+Just bad cert data
+-----END CERTIFICATE-----

src/greentest/3.12/badkey.pem

+-----BEGIN RSA PRIVATE KEY-----
+Bad Key, though the cert should be OK
+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+iHkC6gGdBJhogs4=
+-----END CERTIFICATE-----
+-----BEGIN RSA PRIVATE KEY-----
+Bad Key, though the cert should be OK
+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

src/greentest/3.12/capath/4e1295a3.0

+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

src/greentest/3.12/capath/5ed36f99.0

+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

src/greentest/3.12/capath/6e88d7b8.0

+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

src/greentest/3.12/capath/99d0fa06.0

+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

src/greentest/3.12/capath/b1930218.0

+-----BEGIN CERTIFICATE-----
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+M0/Bd+cbfoHGxPNFIMCR3RN2ewOv9naOooNjV91jvLtaHBdSitYGSMwPx9NP6Noi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+-----END CERTIFICATE-----

src/greentest/3.12/capath/ceff1710.0

+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

src/greentest/3.12/ffdh3072.pem

+    DH Parameters: (3072 bit)
+        prime:
+            00:ff:ff:ff:ff:ff:ff:ff:ff:ad:f8:54:58:a2:bb:
+            4a:9a:af:dc:56:20:27:3d:3c:f1:d8:b9:c5:83:ce:
+            2d:36:95:a9:e1:36:41:14:64:33:fb:cc:93:9d:ce:
+            24:9b:3e:f9:7d:2f:e3:63:63:0c:75:d8:f6:81:b2:
+            02:ae:c4:61:7a:d3:df:1e:d5:d5:fd:65:61:24:33:
+            f5:1f:5f:06:6e:d0:85:63:65:55:3d:ed:1a:f3:b5:
+            57:13:5e:7f:57:c9:35:98:4f:0c:70:e0:e6:8b:77:
+            e2:a6:89:da:f3:ef:e8:72:1d:f1:58:a1:36:ad:e7:
+            35:30:ac:ca:4f:48:3a:79:7a:bc:0a:b1:82:b3:24:
+            fb:61:d1:08:a9:4b:b2:c8:e3:fb:b9:6a:da:b7:60:
+            d7:f4:68:1d:4f:42:a3:de:39:4d:f4:ae:56:ed:e7:
+            63:72:bb:19:0b:07:a7:c8:ee:0a:6d:70:9e:02:fc:
+            e1:cd:f7:e2:ec:c0:34:04:cd:28:34:2f:61:91:72:
+            fe:9c:e9:85:83:ff:8e:4f:12:32:ee:f2:81:83:c3:
+            fe:3b:1b:4c:6f:ad:73:3b:b5:fc:bc:2e:c2:20:05:
+            c5:8e:f1:83:7d:16:83:b2:c6:f3:4a:26:c1:b2:ef:
+            fa:88:6b:42:38:61:1f:cf:dc:de:35:5b:3b:65:19:
+            03:5b:bc:34:f4:de:f9:9c:02:38:61:b4:6f:c9:d6:
+            e6:c9:07:7a:d9:1d:26:91:f7:f7:ee:59:8c:b0:fa:
+            c1:86:d9:1c:ae:fe:13:09:85:13:92:70:b4:13:0c:
+            93:bc:43:79:44:f4:fd:44:52:e2:d7:4d:d3:64:f2:
+            e2:1e:71:f5:4b:ff:5c:ae:82:ab:9c:9d:f6:9e:e8:
+            6d:2b:c5:22:36:3a:0d:ab:c5:21:97:9b:0d:ea:da:
+            1d:bf:9a:42:d5:c4:48:4e:0a:bc:d0:6b:fa:53:dd:
+            ef:3c:1b:20:ee:3f:d5:9d:7c:25:e4:1d:2b:66:c6:
+            2e:37:ff:ff:ff:ff:ff:ff:ff:ff
+        generator: 2 (0x2)
+        recommended-private-length: 276 bits
+-----BEGIN DH PARAMETERS-----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+-----END DH PARAMETERS-----

src/greentest/3.12/idnsans.pem

+-----BEGIN PRIVATE KEY-----
+MIIG/QIBADANBgkqhkiG9w0BAQEFAASCBucwggbjAgEAAoIBgQC8sqplTuHuLjbW
+TL5SL2D1fw9U6WQzLVAF5gsyhd5lr2FpfYwjrob5Mav91aOLbJRTvoNyXsJ26FPS
+0RycRGXbomcIEJxXGy9aI+0MLYBt1G5mgqCH+HcVCwPzCNlhVnTwvpgA7y8zs3+6
+ezZAPWkF0yWOMYLtTcq9A5GWeavt5VMgm1KZF3gO4k58oPyk3Ae9D0LAaYsX6DFi
+BYx41eUR5UbSb5IYXaDd8d6jqW/jnYhgc6Cxkv1gTJFn87V5lrG0vYMSRUtWDQ9Y
+Jh/EKAxjGw7AeY429p6TE4UoJhDmoFYR2NLvawhNIplxol/v0fs0veFQjI/UsTD8
+2tRfnYL4IX8szhLsE5/5Iq8aiLHjVbIMwmDYAa0P63Ap2kf1biSn9mpDL8lQazSo
+yr8xzIq2QS5HMvGbeMAmS0ih10Zx84uVmkWlavgvtSflw8K/ZXT9c70rZp/TdBGY
+95cOFsbg5U/20M/Llpis9tcBCaoVaYSFupatrP+p8y19qP2nebsCAwEAAQKCAYEA
+uaYWWwHW6pzxOrnabcVLYX0WunW9LVShbIw97AElI2n/LuhkXh6xkK48BsqP0vaK
+oDHJ5VYxgQdmoP03Zs8sX4BSWe7twg1u8wJxkA+cUXI1BAn0opHjpwJlalEEfe2v
+s8PwjMrF59nsCq56W42PrDlms5UmuQ5WLsw6Co++hZmfxW7LPu+GIS6qBZfluNT5
+kBpZlDDCtkyteUD4SVI3wvmOSi+Wzv4e7P2wC9kByjENIcfhC5QQURRD4sA1hWCp
+2SThYWqJOCEc2SvGgoqgTRaJuQ2aVG9qrntXt0N4V+WdJWXBK0jedkB2flLve1fR
+KmDYuc9k/c1svmS3Y+iZohBha9H8jpuJmXYBxxg1iNg9m7qkfg8F8wxCYLQKB+U6
+tjRS7by+jSE08On7mpDDhJORnlh+rfEuWPPwAKQpLpdp76KDTvR++GvfOMUiOrFM
+e9s5aXp+vcgkSSqYvigE+sFpCjQWwkGBkMdT16Pf9CzhQaM08YuLnzfLEYgLFw6R
+AoHBAN5NQINBmlq/cptGSru66kfecqHfI7xHnnGWKAkto/B1x7Crrgs4Tk5b4vaA
+JmAqatt5P1e7zco7uAXXebY5VURuH/30TlkuaB+oGFp0OMw6165n8RVPT2ZaDViK
+ssJ9LT8fJ+23TWCCT2Z1zUlM/NnHAMjKOVsJK3/KEkVvlc7ROC7uVooc78AsQehg
+zpL3GBYEeBukT8aNUMqUlesCsIs/dQHW7DzQL2xGkQagm5/PDsxaCsT7ynA8eL3X
+TW+IXwKBwQDZTV3TaG6wqtL8y2DR0lN5jY/eYayX4e18iZ+XEZVTntPdVVyJIE4d
+0A5ZfcILb9WE8R21iptROYSjcH/05j+3fQMJ1WAK0sNfGTUNNT3jYU8YzLvos+wW
+G8E+mNMpFPWNvLV5Qrl4VvoifGh8AMvplUEz8uAzGJbXbRxUPcmjth2ph8zULEDn
+/+o4OcT3gh1bp+HCqch0OuiJRn9qNUpsJG5GMm5FtjBjZM97ucZ1/0DaWl3JUxUN
+/pueo3J9vCUCgcBg2Fjdlcvv8u2z1aijJmgATVm1SWfhE3ZkV50zem2sSTNotTJK
+cwoyOveimeueA3ywBp9g0lFx5Bhkex3sFAggmrVXRoKHeZ8lA28woOdJmezybxfp
+R7b4iQy9YRdFgZEfqawUdMHB5KNAqNt5LpANNBQUZX0dOt53eooBM/6Yri8CyxRq
+cPbFysIfwWTdQ8Z7eRD2Qdv7TP9AcgDp9C8DSu7nkUEzsSKn0gpGT9vcgDEbN7Lv
+ZB4qTT3wvoZeq5MCgcBIG18eDtJkN1sp3Yb0OTnP5QSvg3PVNngq0jQt2fzWMacW
+FARP0HN7exW35n4kc2jD44q7OhJOAqsb3PHo3xqXlZkTg0WKceO4w9GR32/46spn
+bVCRaFrX/z/BuM6hHD5bWRpS8aw/3YTFOsklFNKVYRyw01BIREmRlLhIz/QAKidv
+oQt8AG9NTON44tqUUw3Q40WL5fEJeJ6/JrCTGrnmZrRdANEMuucVpFchNEVB1IC9
+tCzY6IPdD/atzojoZi0CgcB2x9oWLjJ0XJIp2pMAb8nCMVjkKrznKFjZbDm8EQBs
+ou7pM2zkO3VRcWT1BXQocinJsjQqjQiTawP6IN2FQgT0d89V+pwd+jdvpdildQhP
+1/6SErVRZV//oopKTsC6TIBL/EmW1TkP3ulQIZs8YklFgybeHdDyNFi+VgPXkVGe
+IHp0nEzrui9q0YJsjHfFHBeGyzDSfbiBYiF7Auk66gYZbXufebP/LZNG/FIamPP3
+rwYIeeV1IVwk9tPBw6fGwrs=
+-----END PRIVATE KEY-----
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            cb:2d:80:99:5a:69:52:60
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Validity
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Oct 28 14:23:16 2037 GMT
+        Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=idnsans
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (3072 bit)
+                Modulus:
+                    00:bc:b2:aa:65:4e:e1:ee:2e:36:d6:4c:be:52:2f:
+                    60:f5:7f:0f:54:e9:64:33:2d:50:05:e6:0b:32:85:
+                    de:65:af:61:69:7d:8c:23:ae:86:f9:31:ab:fd:d5:
+                    a3:8b:6c:94:53:be:83:72:5e:c2:76:e8:53:d2:d1:
+                    1c:9c:44:65:db:a2:67:08:10:9c:57:1b:2f:5a:23:
+                    ed:0c:2d:80:6d:d4:6e:66:82:a0:87:f8:77:15:0b:
+                    03:f3:08:d9:61:56:74:f0:be:98:00:ef:2f:33:b3:
+                    7f:ba:7b:36:40:3d:69:05:d3:25:8e:31:82:ed:4d:
+                    ca:bd:03:91:96:79:ab:ed:e5:53:20:9b:52:99:17:
+                    78:0e:e2:4e:7c:a0:fc:a4:dc:07:bd:0f:42:c0:69:
+                    8b:17:e8:31:62:05:8c:78:d5:e5:11:e5:46:d2:6f:
+                    92:18:5d:a0:dd:f1:de:a3:a9:6f:e3:9d:88:60:73:
+                    a0:b1:92:fd:60:4c:91:67:f3:b5:79:96:b1:b4:bd:
+                    83:12:45:4b:56:0d:0f:58:26:1f:c4:28:0c:63:1b:
+                    0e:c0:79:8e:36:f6:9e:93:13:85:28:26:10:e6:a0:
+                    56:11:d8:d2:ef:6b:08:4d:22:99:71:a2:5f:ef:d1:
+                    fb:34:bd:e1:50:8c:8f:d4:b1:30:fc:da:d4:5f:9d:
+                    82:f8:21:7f:2c:ce:12:ec:13:9f:f9:22:af:1a:88:
+                    b1:e3:55:b2:0c:c2:60:d8:01:ad:0f:eb:70:29:da:
+                    47:f5:6e:24:a7:f6:6a:43:2f:c9:50:6b:34:a8:ca:
+                    bf:31:cc:8a:b6:41:2e:47:32:f1:9b:78:c0:26:4b:
+                    48:a1:d7:46:71:f3:8b:95:9a:45:a5:6a:f8:2f:b5:
+                    27:e5:c3:c2:bf:65:74:fd:73:bd:2b:66:9f:d3:74:
+                    11:98:f7:97:0e:16:c6:e0:e5:4f:f6:d0:cf:cb:96:
+                    98:ac:f6:d7:01:09:aa:15:69:84:85:ba:96:ad:ac:
+                    ff:a9:f3:2d:7d:a8:fd:a7:79:bb
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Alternative Name: 
+                DNS:idnsans, DNS:xn--knig-5qa.idn.pythontest.net, DNS:xn--knigsgsschen-lcb0w.idna2003.pythontest.net, DNS:xn--knigsgchen-b4a3dun.idna2008.pythontest.net, DNS:xn--nxasmq6b.idna2003.pythontest.net, DNS:xn--nxasmm1c.idna2008.pythontest.net
+            X509v3 Key Usage: critical
+                Digital Signature, Key Encipherment
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+            X509v3 Basic Constraints: critical
+                CA:FALSE
+            X509v3 Subject Key Identifier: 
+                5C:BE:18:7F:7B:3F:CE:99:66:80:79:53:4B:DD:33:1B:42:A5:7E:00
+            X509v3 Authority Key Identifier: 
+                keyid:B3:8A:A0:A2:BA:71:F1:A8:24:79:D4:A4:5B:25:36:15:1E:49:C8:CD
+                DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
+                serial:CB:2D:80:99:5A:69:52:5B
+
+            Authority Information Access: 
+                CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
+                OCSP - URI:http://testca.pythontest.net/testca/ocsp/
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://testca.pythontest.net/testca/revocation.crl
+
+    Signature Algorithm: sha256WithRSAEncryption
+         5d:7a:f8:81:e0:a7:c1:3f:39:eb:d3:52:2c:e1:cb:4d:29:b3:
+         77:18:17:18:9e:12:fc:11:cc:3c:49:cb:6b:f4:4d:6c:b8:d2:
+         f4:e9:37:f8:6b:ed:f5:d7:f1:eb:5a:41:04:c7:f3:8c:da:e1:
+         05:8e:ae:58:71:d9:01:8a:32:46:b2:dd:95:46:e1:ce:82:04:
+         fa:0b:1c:29:75:07:85:ce:cd:59:d4:cc:f3:56:b3:72:4d:cb:
+         90:0f:ce:02:21:ce:5d:17:84:96:7f:6a:00:57:42:b7:24:5b:
+         07:25:1e:77:a8:9d:da:41:09:8e:29:79:b4:b0:a1:45:c8:70:
+         ae:2c:86:24:ae:3d:9a:74:a7:04:78:d6:1f:1b:17:c5:c1:6d:
+         b1:1a:fd:f4:50:2e:61:16:84:89:d0:42:3f:b6:bf:bd:52:bd:
+         c8:3e:8e:87:b4:f0:bd:ad:c7:51:65:2f:77:e8:69:79:0e:03:
+         63:89:e7:70:ad:c8:d1:2f:1a:a5:06:d2:90:db:7c:07:35:9a:
+         0b:0e:85:87:d1:70:17:a7:88:0f:c6:b5:9c:88:00:fa:f9:b2:
+         0a:19:5a:4b:8d:91:12:51:5e:0e:c1:d8:9e:02:78:d0:2d:24:
+         09:fe:d4:97:3c:cb:a0:1f:9a:ab:f7:0f:e2:fa:64:23:4e:53:
+         0a:15:3e:f5:04:01:86:29:8b:8e:24:40:2f:b1:90:87:5c:3b:
+         7b:a7:4c:06:af:c3:90:7f:e9:c6:56:42:61:15:2c:83:f1:7c:
+         4f:89:17:f3:a0:11:34:3f:8d:af:75:34:60:1e:e0:f2:f3:02:
+         e7:aa:b3:f7:9f:1c:f8:69:f4:fe:da:57:6e:1b:95:53:70:cd:
+         ed:b6:bb:2a:84:eb:ab:c3:a9:b4:d5:15:a0:b2:cc:81:2d:f1:
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+         35:64:ac:ac:ca:4a:bf:86:78:f8:53:2d:17:d8:e8:84:c8:07:
+         a4:c2:29:76:c7:1f
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

src/greentest/3.12/keycert.passwd.pem

+-----BEGIN ENCRYPTED PRIVATE KEY-----
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+

src/greentest/3.12/keycert.pem

+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+HcVKQHyOeyvnINuBAQ==
+-----END CERTIFICATE-----

src/greentest/3.12/keycert2.pem

+-----BEGIN PRIVATE KEY-----
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+2MClyf8o5d5ePObH8rkxrpY=
+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+2ceXMxRCjOJwEHUCFuTYeqowabdlpi0nyPbSn7JIwCpT
+-----END CERTIFICATE-----

src/greentest/3.12/keycert3.pem

+-----BEGIN PRIVATE KEY-----
+MIIG/gIBADANBgkqhkiG9w0BAQEFAASCBugwggbkAgEAAoIBgQDFtLOteQlQojN7
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+YShBZ1cLugVWtw7D4nqBAoHAF29k64iAxY5Y4OOibVkqjUCPyqG2oxiXqgO7CxZp
+FGUat5UtV2mIBlSENs1o5AZ1nPlgWtPtg0xVCaG2t/Rq7ugvUfAnAhUK6zX8FS+T
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+MkhXedRsdLSKqMh0VGeGHoLS
+-----END PRIVATE KEY-----
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            cb:2d:80:99:5a:69:52:5c
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Validity
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Oct 28 14:23:16 2037 GMT
+        Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=localhost
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (3072 bit)
+                Modulus:
+                    00:c5:b4:b3:ad:79:09:50:a2:33:7b:ce:d9:2e:c7:
+                    b9:b4:86:61:8a:90:fd:61:87:48:5b:2a:a4:dc:0f:
+                    ce:e3:90:b0:2a:03:06:56:7a:78:d9:32:30:9b:6d:
+                    9d:ef:3f:e0:0e:6c:22:24:60:82:b3:3d:76:3b:62:
+                    2f:87:e4:cd:ce:da:65:c8:0f:1a:07:1a:32:ff:19:
+                    6b:68:13:20:cd:5e:f9:bd:50:2f:8c:46:e4:8e:ab:
+                    63:1a:2c:71:d0:1b:44:71:d9:3c:5c:62:b3:15:50:
+                    ce:db:f7:7a:e9:37:52:c6:46:b0:af:d6:02:12:5c:
+                    ce:04:bc:42:68:a0:04:7b:01:a7:63:d2:91:bf:a3:
+                    47:ea:0c:07:45:8c:7e:90:65:b8:67:d6:26:65:7b:
+                    e7:86:6e:37:1f:76:01:ff:1f:41:7c:76:7d:4f:3c:
+                    6a:15:88:75:e2:71:bb:10:e2:40:7a:d3:4d:8f:7f:
+                    e6:97:3f:86:f6:40:a0:1b:7e:5c:8d:1c:42:87:3c:
+                    71:0e:39:35:eb:16:33:1d:73:e6:ea:29:6d:b8:7a:
+                    91:2c:31:92:39:f6:ac:7d:85:4f:f8:46:fa:77:fe:
+                    ff:af:13:04:cb:ec:d9:bb:8a:5a:6d:cd:99:f6:72:
+                    f1:82:5b:7f:4b:0b:49:cd:60:b3:b3:90:ed:c7:f3:
+                    1c:00:ef:98:7a:bb:29:1d:07:e5:8e:fe:fd:82:28:
+                    82:bd:33:f6:4e:fb:d4:0d:ae:66:a8:91:f2:83:6a:
+                    60:a4:df:d6:fc:86:50:b0:34:be:8b:b1:5a:6f:77:
+                    75:d3:4b:95:a7:e1:85:a7:f7:61:2a:8a:5b:54:24:
+                    9a:0f:a3:ba:5c:ed:54:dd:58:28:38:cd:51:67:e1:
+                    0f:19:87:83:45:36:7f:ea:4c:1f:25:10:c8:2b:b0:
+                    d4:d5:e5:cc:99:ef:38:68:06:25:0c:48:ee:39:6e:
+                    6a:36:36:c9:c4:ed:c7:bf:25:48:65:a9:ee:6e:87:
+                    43:d3:d4:c2:01:81:35:7e:a0:33
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Alternative Name: 
+                DNS:localhost
+            X509v3 Key Usage: critical
+                Digital Signature, Key Encipherment
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+            X509v3 Basic Constraints: critical
+                CA:FALSE
+            X509v3 Subject Key Identifier: 
+                85:75:10:25:D0:2C:80:50:24:1A:5B:57:70:DE:B5:CB:71:A9:3B:7B
+            X509v3 Authority Key Identifier: 
+                keyid:B3:8A:A0:A2:BA:71:F1:A8:24:79:D4:A4:5B:25:36:15:1E:49:C8:CD
+                DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
+                serial:CB:2D:80:99:5A:69:52:5B
+
+            Authority Information Access: 
+                CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
+                OCSP - URI:http://testca.pythontest.net/testca/ocsp/
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://testca.pythontest.net/testca/revocation.crl
+
+    Signature Algorithm: sha256WithRSAEncryption
+         95:f3:56:bb:d5:8c:70:bd:d1:de:da:63:b0:29:d7:db:60:27:
+         d6:59:fd:61:1b:30:c6:d0:5d:73:7d:34:e1:68:e3:28:a6:89:
+         e6:60:bd:89:d3:0e:f4:72:ad:72:76:f8:86:21:fd:75:3c:f8:
+         6d:be:9c:04:e1:82:03:69:6c:ae:d0:55:ba:5e:f2:ca:f5:0f:
+         8e:d6:d9:8d:c8:56:46:f4:f8:ac:74:2a:19:7b:8e:47:70:1f:
+         fb:fb:bd:69:02:a1:a5:4a:6e:21:1c:04:14:15:55:bf:bf:24:
+         43:c8:17:03:be:3e:2c:ea:db:c8:af:1d:fd:52:df:d6:15:49:
+         9e:c2:44:69:ef:f1:45:43:83:b2:1e:cf:14:1c:13:3f:fe:9c:
+         71:cb:e7:1b:18:56:36:a7:af:44:f1:0b:a1:79:44:46:f9:43:
+         46:29:d8:b0:ca:49:4d:65:60:d3:f6:8e:74:bc:62:9e:1e:8d:
+         4b:29:9a:b4:0d:f0:a2:77:5b:34:e4:11:2f:a7:25:c5:e5:07:
+         76:12:ae:be:75:73:15:e4:0a:7d:53:38:56:3f:79:6d:6e:ca:
+         ed:80:ab:56:ed:7e:8b:1c:e7:e3:d4:62:30:22:70:e7:29:b2:
+         03:3c:fe:fa:3d:f0:36:c0:4d:11:a2:99:d3:29:31:27:b8:c5:
+         b8:15:a3:3c:4f:9b:73:5e:2b:b2:fb:cb:fd:75:47:b8:17:bd:
+         21:d8:e6:c1:b9:ff:73:81:d8:25:08:6d:08:5e:1c:a5:83:50:
+         de:67:e6:da:d0:8e:5a:d3:f2:2a:b1:3f:b8:80:21:07:6a:71:
+         15:6d:05:eb:51:b3:59:8d:d4:15:46:7e:02:a8:13:01:16:99:
+         bd:03:cc:70:71:2a:23:16:78:af:d1:d5:01:9d:04:b4:63:93:
+         9a:04:3a:92:2e:e6:7e:73:93:a5:fe:50:9b:bd:0e:ea:54:86:
+         6f:7c:e5:14:77:fe:c2:28:5a:4a:0e:d7:2d:8c:e9:ed:61:29:
+         b2:53:ff:6c:04:bc
+-----BEGIN CERTIFICATE-----
+MIIF8TCCBFmgAwIBAgIJAMstgJlaaVJcMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV
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+5n5zk6X+UJu9DupUhm985RR3/sIoWkoO1y2M6e1hKbJT/2wEvA==
+-----END CERTIFICATE-----

src/greentest/3.12/keycert4.pem

+-----BEGIN PRIVATE KEY-----
+MIIG/gIBADANBgkqhkiG9w0BAQEFAASCBugwggbkAgEAAoIBgQC34y3S6iXdmdvd
+M/2aFBe6CvRvZwhh1huGl7IQRtdoakPqMLlEdNHJtNeF5M27xLei+p4wt7N1Jyi0
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+OC5pqy9nU/P0tOhDlMkCgcEAosaBJLIeAYlOU0+2uSx5g5mIqOOTyrDEmqqad6T/
+wkB7vW2QaoDvLL22Yrzdn9vQ0V0rqzhVtan7sq5pn/BQJAueZYN8rFxS3uuW+UQk
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+dYl+WAE9LAyF1DF29BirEXVw
+-----END PRIVATE KEY-----
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            cb:2d:80:99:5a:69:52:5d
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Validity
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Oct 28 14:23:16 2037 GMT
+        Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=fakehostname
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (3072 bit)
+                Modulus:
+                    00:b7:e3:2d:d2:ea:25:dd:99:db:dd:33:fd:9a:14:
+                    17:ba:0a:f4:6f:67:08:61:d6:1b:86:97:b2:10:46:
+                    d7:68:6a:43:ea:30:b9:44:74:d1:c9:b4:d7:85:e4:
+                    cd:bb:c4:b7:a2:fa:9e:30:b7:b3:75:27:28:b4:da:
+                    47:87:41:bd:66:f5:3a:87:e4:0a:ee:3a:41:36:b6:
+                    2f:b5:e7:31:28:2a:85:3d:69:6c:9d:4e:21:fe:7a:
+                    92:93:4f:4c:a3:83:63:5c:29:08:d1:51:a5:9c:6e:
+                    1c:c1:1f:81:0c:2a:e0:88:97:32:08:cf:cf:c4:20:
+                    a9:0e:aa:10:83:c2:ae:be:16:fd:c0:ca:cf:b3:ec:
+                    1c:fe:c9:1f:34:8b:18:af:2a:ef:e5:ed:28:f1:43:
+                    bc:fb:47:f9:02:23:b3:95:89:17:08:3b:94:01:40:
+                    f8:fb:54:bb:c2:4f:3e:15:03:ab:bf:2d:d5:e7:80:
+                    ad:87:36:e6:ae:e9:65:e6:e7:23:4d:41:ba:ab:07:
+                    5d:40:10:97:18:65:ff:dc:56:b9:de:57:81:7e:66:
+                    32:e5:a0:02:a0:4a:7f:46:07:c7:96:3b:28:a5:4d:
+                    0d:7c:4d:c2:9d:f8:7d:a2:72:2a:51:68:ff:fe:41:
+                    1f:ca:3f:1e:46:2b:f4:97:53:79:b2:aa:6e:b6:40:
+                    e1:88:ee:df:f9:92:d5:5d:8c:68:6c:ea:d1:d9:c7:
+                    0d:52:46:28:a9:88:b6:16:6e:d5:51:ad:2c:5a:e3:
+                    06:25:82:98:28:53:0b:eb:be:fb:42:e6:40:0d:9d:
+                    3c:35:54:65:ac:c5:cb:3e:e9:ae:fe:3e:87:18:9c:
+                    98:aa:ee:4e:1b:e4:e0:14:6f:74:72:be:5f:43:2c:
+                    03:32:f0:da:a9:45:6a:38:70:70:ff:5d:0d:c5:09:
+                    8c:05:1e:53:92:83:1f:dd:2f:94:9e:d2:2d:dd:5b:
+                    52:b3:6c:fe:8e:bd:a3:60:ea:79:7f:d4:45:cf:52:
+                    c2:75:01:34:bc:9f:3b:f3:85:c7
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Alternative Name: 
+                DNS:fakehostname
+            X509v3 Key Usage: critical
+                Digital Signature, Key Encipherment
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+            X509v3 Basic Constraints: critical
+                CA:FALSE
+            X509v3 Subject Key Identifier: 
+                C8:BD:A8:B4:C0:F2:32:10:73:47:9C:48:81:32:F8:BA:BB:26:84:97
+            X509v3 Authority Key Identifier: 
+                keyid:B3:8A:A0:A2:BA:71:F1:A8:24:79:D4:A4:5B:25:36:15:1E:49:C8:CD
+                DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
+                serial:CB:2D:80:99:5A:69:52:5B
+
+            Authority Information Access: 
+                CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
+                OCSP - URI:http://testca.pythontest.net/testca/ocsp/
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://testca.pythontest.net/testca/revocation.crl
+
+    Signature Algorithm: sha256WithRSAEncryption
+         76:87:76:4d:e4:0f:88:bf:2c:f3:58:67:c0:97:6c:cd:59:18:
+         82:83:4c:04:19:a5:6d:aa:fa:64:3d:49:32:3e:e1:56:95:b2:
+         13:f7:cf:d3:11:b0:72:b7:5b:e7:d7:85:69:51:3c:b6:54:80:
+         45:2f:28:10:21:20:b9:ba:e9:27:5a:b7:3f:82:b7:69:f5:46:
+         f5:bf:a2:8b:17:7f:f2:14:d1:46:97:b5:8b:47:fb:9f:e8:5c:
+         05:0e:9d:11:bd:7c:9a:03:84:0b:ca:29:66:4a:ca:0d:6f:09:
+         1e:7a:27:c1:7f:03:96:70:8d:18:a5:2f:a4:98:a5:19:aa:8c:
+         5d:1e:8c:3e:bb:6d:3b:c0:33:c0:15:e1:bd:09:3d:9f:e8:dc:
+         12:d4:cb:44:1d:06:f5:e8:d6:4e:a1:2d:5c:9f:5d:1f:5b:2a:
+         c3:4d:40:8d:da:d1:78:80:d0:c6:31:72:10:48:8a:e9:10:7a:
+         13:30:11:b2:9e:67:0e:ed:a1:aa:ec:73:2d:f0:b8:8a:22:75:
+         0f:30:69:5c:50:7e:91:ce:da:91:c7:70:8c:65:ff:f6:58:fb:
+         00:bd:45:cc:e2:e4:e3:e5:16:36:7d:f3:a2:4a:9c:45:ff:d9:
+         a5:16:e0:2f:b5:5b:6c:e6:8a:13:15:48:73:bd:7c:80:33:c3:
+         d4:3b:3a:1d:85:0e:a4:f7:f7:fb:48:0c:e9:a0:4b:5e:8a:5c:
+         67:f8:25:02:6f:cd:72:c1:aa:5a:93:64:7c:14:20:43:e0:13:
+         7f:0d:e1:0d:61:5e:2e:2c:cd:7a:2e:2a:ae:b6:75:6a:5f:a0:
+         1a:9b:b6:67:2d:b0:a5:1c:54:bc:8c:70:7e:15:2b:c0:50:e3:
+         03:bb:a4:a5:fc:45:01:c9:3f:a7:b8:18:dc:3e:08:07:a1:9b:
+         f5:bd:95:bd:49:e8:10:7c:91:7d:2d:c4:c2:98:b6:b7:51:69:
+         d7:0a:68:40:b5:0f:85:a0:a9:67:77:c6:68:cb:0e:58:34:b3:
+         58:e7:c8:7c:09:67
+-----BEGIN CERTIFICATE-----
+MIIF9zCCBF+gAwIBAgIJAMstgJlaaVJdMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV
+BAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUgRm91bmRhdGlvbiBDQTEW
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+NDIzMTZaMGIxCzAJBgNVBAYTAlhZMRcwFQYDVQQHDA5DYXN0bGUgQW50aHJheDEj
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+gEUvKBAhILm66Sdatz+Ct2n1RvW/oosXf/IU0UaXtYtH+5/oXAUOnRG9fJoDhAvK
+KWZKyg1vCR56J8F/A5ZwjRilL6SYpRmqjF0ejD67bTvAM8AV4b0JPZ/o3BLUy0Qd
+BvXo1k6hLVyfXR9bKsNNQI3a0XiA0MYxchBIiukQehMwEbKeZw7toarscy3wuIoi
+dQ8waVxQfpHO2pHHcIxl//ZY+wC9Rczi5OPlFjZ986JKnEX/2aUW4C+1W2zmihMV
+SHO9fIAzw9Q7Oh2FDqT39/tIDOmgS16KXGf4JQJvzXLBqlqTZHwUIEPgE38N4Q1h
+Xi4szXouKq62dWpfoBqbtmctsKUcVLyMcH4VK8BQ4wO7pKX8RQHJP6e4GNw+CAeh
+m/W9lb1J6BB8kX0txMKYtrdRadcKaEC1D4WgqWd3xmjLDlg0s1jnyHwJZw==
+-----END CERTIFICATE-----

src/greentest/3.12/keycertecc.pem

+-----BEGIN PRIVATE KEY-----
+MIG2AgEAMBAGByqGSM49AgEGBSuBBAAiBIGeMIGbAgEBBDBcNwE+cm17mmr7Yg6d
+0DNCnheGFOjkYH4tYzTyCkcZGShkmF/tKhIqb3imKz0Kx9+hZANiAATyp8ws6CuN
+OI2/3MC4jZVSkmoDzm/X/ZrkEm4TVHKPSZ6kzZRpmmUlLS9l7SQZSLYyDAFBFzoG
+JJYHhZNQXEO7HFszn6KnvLjhwS6ddzlaHPziEknrSr0OKhJmdJHrQAQ=
+-----END PRIVATE KEY-----
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            cb:2d:80:99:5a:69:52:5e
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Validity
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Oct 28 14:23:16 2037 GMT
+        Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=localhost-ecc
+        Subject Public Key Info:
+            Public Key Algorithm: id-ecPublicKey
+                Public-Key: (384 bit)
+                pub:
+                    04:f2:a7:cc:2c:e8:2b:8d:38:8d:bf:dc:c0:b8:8d:
+                    95:52:92:6a:03:ce:6f:d7:fd:9a:e4:12:6e:13:54:
+                    72:8f:49:9e:a4:cd:94:69:9a:65:25:2d:2f:65:ed:
+                    24:19:48:b6:32:0c:01:41:17:3a:06:24:96:07:85:
+                    93:50:5c:43:bb:1c:5b:33:9f:a2:a7:bc:b8:e1:c1:
+                    2e:9d:77:39:5a:1c:fc:e2:12:49:eb:4a:bd:0e:2a:
+                    12:66:74:91:eb:40:04
+                ASN1 OID: secp384r1
+                NIST CURVE: P-384
+        X509v3 extensions:
+            X509v3 Subject Alternative Name: 
+                DNS:localhost-ecc
+            X509v3 Key Usage: critical
+                Digital Signature, Key Encipherment
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+            X509v3 Basic Constraints: critical
+                CA:FALSE
+            X509v3 Subject Key Identifier: 
+                79:11:98:86:15:4F:48:F4:31:0B:D2:CC:C8:26:3A:09:07:5D:96:40
+            X509v3 Authority Key Identifier: 
+                keyid:B3:8A:A0:A2:BA:71:F1:A8:24:79:D4:A4:5B:25:36:15:1E:49:C8:CD
+                DirName:/C=XY/O=Python Software Foundation CA/CN=our-ca-server
+                serial:CB:2D:80:99:5A:69:52:5B
+
+            Authority Information Access: 
+                CA Issuers - URI:http://testca.pythontest.net/testca/pycacert.cer
+                OCSP - URI:http://testca.pythontest.net/testca/ocsp/
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://testca.pythontest.net/testca/revocation.crl
+
+    Signature Algorithm: sha256WithRSAEncryption
+         6e:42:e8:a2:2d:28:14:e3:25:5c:c1:7e:54:e9:3a:ff:30:db:
+         94:ba:b2:f6:5f:ae:9a:c1:90:b3:4f:ce:65:1d:84:64:c0:71:
+         2c:44:8e:7e:00:79:f5:8c:4a:1d:34:13:44:de:99:2e:db:53:
+         ee:ec:74:97:4d:59:1a:09:82:4f:98:75:91:a7:a0:b9:da:5e:
+         68:f5:32:85:be:36:3d:83:d4:ee:f9:87:67:31:85:41:53:9a:
+         e7:05:96:13:1c:88:2e:7f:33:b1:ee:bd:f9:50:52:24:ed:3d:
+         92:95:6e:30:c3:af:74:a9:ee:15:bb:da:7c:14:50:8e:e3:99:
+         ea:ba:b4:37:8a:50:61:26:de:01:93:b8:a2:6b:d9:c7:38:5e:
+         b2:f8:96:3d:a8:9f:7d:0c:71:d4:7e:cc:a0:57:af:7e:ce:3f:
+         a7:a7:27:68:c1:28:d7:4f:44:c1:b4:93:c3:c7:35:2b:50:c3:
+         8e:2c:d0:46:c1:3f:e1:67:d3:f0:81:ae:f3:5c:3e:4f:d5:a8:
+         07:8f:e0:eb:ef:d8:dc:47:e0:3d:58:eb:de:0e:7f:b2:58:cb:
+         5c:f1:2f:65:7e:0f:0d:cc:ca:ba:83:53:63:bc:dd:18:0c:ee:
+         ed:ec:96:88:d0:38:c5:d7:ab:e7:55:79:7b:6d:ba:c0:a0:e9:
+         5c:ca:7c:fb:f8:70:c7:fb:f5:b2:b5:74:cb:f7:c0:0d:20:9f:
+         1d:b7:4c:bf:8a:8d:cd:e3:bc:4e:30:78:02:12:a0:9b:d5:8f:
+         49:3c:95:91:76:6e:7c:54:dc:61:7a:2e:20:ed:35:25:e0:c5:
+         17:50:02:83:00:74:8f:f0:1c:97:96:08:fc:2e:63:a4:f7:97:
+         87:43:2a:32:04:2d:4c:f9:1a:07:bf:68:91:fc:50:21:a1:3c:
+         8d:8f:fb:83:57:83:1f:b6:55:5c:55:2f:58:64:ad:f3:27:ba:
+         d0:e3:cd:58:01:a3:c9:ba:1d:95:dc:30:d5:af:b9:20:ad:d9:
+         48:ba:8d:9a:66:ee
+-----BEGIN CERTIFICATE-----
+MIIEyzCCAzOgAwIBAgIJAMstgJlaaVJeMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV
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+L1hkrfMnutDjzVgBo8m6HZXcMNWvuSCt2Ui6jZpm7g==
+-----END CERTIFICATE-----

src/greentest/3.12/nokia.pem

+# Certificate for projects.developer.nokia.com:443 (see issue 13034)
+-----BEGIN CERTIFICATE-----
+MIIFLDCCBBSgAwIBAgIQLubqdkCgdc7lAF9NfHlUmjANBgkqhkiG9w0BAQUFADCB
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+UYOtiRphwfuYQhRZ7qX9q2MMkCMI65XNK/SaFrAbbG0=
+-----END CERTIFICATE-----

src/greentest/3.12/nosan.pem

+-----BEGIN PRIVATE KEY-----
+MIIG/QIBADANBgkqhkiG9w0BAQEFAASCBucwggbjAgEAAoIBgQCv3sUoOE4F7Pye
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+3suWxl0FvgzTW5HD16WRXeI=
+-----END PRIVATE KEY-----
+Certificate:
+    Data:
+        Version: 1 (0x0)
+        Serial Number:
+            cb:2d:80:99:5a:69:52:61
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Validity
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Oct 28 14:23:16 2037 GMT
+        Subject: C=XY, L=Castle Anthrax, O=Python Software Foundation, CN=nosan
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (3072 bit)
+                Modulus:
+                    00:af:de:c5:28:38:4e:05:ec:fc:9e:01:3d:90:e9:
+                    7a:57:ac:65:0e:bb:57:d8:81:d9:c8:b4:b2:cb:86:
+                    f9:fb:00:2b:87:32:3e:d3:03:95:0a:5f:1b:1e:a4:
+                    99:f9:9b:62:62:f4:bb:c0:6e:4b:2b:d4:85:9d:2d:
+                    90:2f:36:08:f0:b1:44:7e:13:81:db:63:5d:3c:06:
+                    15:6d:f6:c9:37:1c:59:2f:13:43:8e:15:b0:1a:d7:
+                    82:02:b5:83:de:d7:c3:ff:e0:7b:fa:65:fb:bf:18:
+                    90:d4:af:05:c7:34:25:2e:d2:9e:a2:fe:6a:2c:a5:
+                    9e:4e:de:cc:79:32:05:5a:4a:19:27:18:01:02:dc:
+                    aa:7b:cc:e8:2e:b0:c9:84:f1:74:9b:90:d4:1a:dc:
+                    04:4c:91:6e:28:91:3a:96:28:07:80:1c:38:d5:15:
+                    5c:b2:87:36:50:9a:8f:a0:68:bc:e1:59:f2:55:49:
+                    98:65:26:cb:a2:2e:86:46:1a:b5:53:ab:ce:44:89:
+                    7b:04:e2:5f:2b:3d:a2:3e:98:a9:15:cd:63:f5:dc:
+                    86:56:f8:5c:75:b6:22:24:b6:e9:9d:1d:66:f5:39:
+                    05:ab:be:6f:00:89:3f:5b:f0:f7:05:09:45:2b:be:
+                    14:05:70:b0:d2:09:98:ca:95:0d:2d:45:6a:d2:48:
+                    aa:eb:56:c4:a5:74:ea:de:a9:12:ed:a6:31:b3:14:
+                    9a:46:9d:37:2f:b2:52:fb:ac:fe:69:83:90:e3:06:
+                    c6:26:55:c0:e3:ae:64:6e:26:e8:46:ab:9d:97:ff:
+                    a1:c4:0b:de:c6:a2:e5:4a:f2:d4:f5:2d:53:2f:d7:
+                    0b:9f:54:f9:fe:8b:d4:f3:c3:13:ae:45:67:94:bd:
+                    5a:8b:00:98:16:43:d3:77:c8:a7:72:98:7f:95:ae:
+                    96:64:fe:80:7d:49:cc:83:6a:41:9e:cd:90:56:e4:
+                    27:8e:41:b3:49:f1:6a:17:e7:c8:cd:c5:e7:c6:8e:
+                    da:8a:c6:6c:b3:b6:ee:37:af:71
+                Exponent: 65537 (0x10001)
+    Signature Algorithm: sha256WithRSAEncryption
+         91:42:c2:15:57:42:47:77:e7:0f:c5:55:26:b1:5b:c3:5e:ba:
+         81:db:e1:a4:9f:b8:42:5a:21:c9:8c:18:ae:0f:90:ab:9a:24:
+         e7:d2:78:fc:bd:97:29:b1:5c:46:1f:5b:b8:d2:a7:87:f1:50:
+         53:5b:d3:be:57:74:bd:e5:75:db:50:81:f7:37:95:0b:69:ef:
+         39:8c:5c:82:d5:64:62:d5:8b:e9:e0:31:e1:73:d2:5a:2c:de:
+         43:5a:06:e5:d3:4d:d0:35:e0:9f:c2:73:31:bc:35:69:d4:fb:
+         7d:f0:1a:33:f7:f6:25:72:9c:a6:84:05:08:f6:b5:e8:04:10:
+         f1:1f:f2:95:ad:a1:f8:d8:80:a5:eb:75:43:99:33:90:0c:79:
+         fc:c0:87:08:95:20:aa:c2:81:0b:22:6f:56:f4:8f:2a:23:f8:
+         40:47:1c:03:a5:b1:04:0a:04:4a:df:d0:88:a8:bc:31:f2:42:
+         9b:d8:11:14:9e:e3:68:ea:07:2c:15:de:d2:36:5a:15:38:ed:
+         d2:af:0e:b4:b6:1d:a0:57:94:ea:c3:c7:4c:14:57:81:00:57:
+         94:d3:b0:27:69:d7:48:02:6c:e5:97:f7:be:22:7c:38:24:af:
+         b2:b0:7b:08:75:1e:ca:2e:c7:41:ef:8b:74:cf:c9:c3:6f:39:
+         b9:52:41:18:c6:70:24:54:51:04:fe:5f:88:70:35:e5:1c:8e:
+         d6:67:69:44:44:33:9b:8c:fe:a5:b9:95:48:66:84:f3:1a:04:
+         ab:a3:57:c1:b6:b4:2f:28:12:45:2b:cb:42:d3:f4:a5:ce:7b:
+         6c:1f:e4:c8:a9:e7:d4:6d:c8:27:2d:69:26:c5:e8:73:10:54:
+         1f:c3:bf:fd:aa:f5:95:6f:f6:ca:d5:06:8f:1b:79:93:e3:86:
+         ba:8d:fe:a8:10:8f:95:3e:14:09:bf:ca:88:59:e2:93:b6:ec:
+         03:a9:7e:dd:1f:5f:13:d3:29:b3:a6:f3:6a:df:30:53:44:c8:
+         cd:e5:82:57:bc:9c
+-----BEGIN CERTIFICATE-----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+nuNo6gcsFd7SNloVOO3Srw60th2gV5Tqw8dMFFeBAFeU07AnaddIAmzll/e+Inw4
+JK+ysHsIdR7KLsdB74t0z8nDbzm5UkEYxnAkVFEE/l+IcDXlHI7WZ2lERDObjP6l
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+RMjN5YJXvJw=
+-----END CERTIFICATE-----

src/greentest/3.12/nullbytecert.pem

+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 0 (0x0)
+    Signature Algorithm: sha1WithRSAEncryption
+        Issuer: C=US, ST=Oregon, L=Beaverton, O=Python Software Foundation, OU=Python Core Development, CN=null.python.org\x00example.org/emailAddress=python-dev@python.org
+        Validity
+            Not Before: Aug  7 13:11:52 2013 GMT
+            Not After : Aug  7 13:12:52 2013 GMT
+        Subject: C=US, ST=Oregon, L=Beaverton, O=Python Software Foundation, OU=Python Core Development, CN=null.python.org\x00example.org/emailAddress=python-dev@python.org
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:b5:ea:ed:c9:fb:46:7d:6f:3b:76:80:dd:3a:f3:
+                    03:94:0b:a7:a6:db:ec:1d:df:ff:23:74:08:9d:97:
+                    16:3f:a3:a4:7b:3e:1b:0e:96:59:25:03:a7:26:e2:
+                    88:a9:cf:79:cd:f7:04:56:b0:ab:79:32:6e:59:c1:
+                    32:30:54:eb:58:a8:cb:91:f0:42:a5:64:27:cb:d4:
+                    56:31:88:52:ad:cf:bd:7f:f0:06:64:1f:cc:27:b8:
+                    a3:8b:8c:f3:d8:29:1f:25:0b:f5:46:06:1b:ca:02:
+                    45:ad:7b:76:0a:9c:bf:bb:b9:ae:0d:16:ab:60:75:
+                    ae:06:3e:9c:7c:31:dc:92:2f:29:1a:e0:4b:0c:91:
+                    90:6c:e9:37:c5:90:d7:2a:d7:97:15:a3:80:8f:5d:
+                    7b:49:8f:54:30:d4:97:2c:1c:5b:37:b5:ab:69:30:
+                    68:43:d3:33:78:4b:02:60:f5:3c:44:80:a1:8f:e7:
+                    f0:0f:d1:5e:87:9e:46:cf:62:fc:f9:bf:0c:65:12:
+                    f1:93:c8:35:79:3f:c8:ec:ec:47:f5:ef:be:44:d5:
+                    ae:82:1e:2d:9a:9f:98:5a:67:65:e1:74:70:7c:cb:
+                    d3:c2:ce:0e:45:49:27:dc:e3:2d:d4:fb:48:0e:2f:
+                    9e:77:b8:14:46:c0:c4:36:ca:02:ae:6a:91:8c:da:
+                    2f:85
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Basic Constraints: critical
+                CA:FALSE
+            X509v3 Subject Key Identifier:
+                88:5A:55:C0:52:FF:61:CD:52:A3:35:0F:EA:5A:9C:24:38:22:F7:5C
+            X509v3 Key Usage:
+                Digital Signature, Non Repudiation, Key Encipherment
+            X509v3 Subject Alternative Name:
+                *************************************************************
+                WARNING: The values for DNS, email and URI are WRONG. OpenSSL
+                         doesn't print the text after a NULL byte.
+                *************************************************************
+                DNS:altnull.python.org, email:null@python.org, URI:http://null.python.org, IP Address:192.0.2.1, IP Address:2001:DB8:0:0:0:0:0:1
+    Signature Algorithm: sha1WithRSAEncryption
+         ac:4f:45:ef:7d:49:a8:21:70:8e:88:59:3e:d4:36:42:70:f5:
+         a3:bd:8b:d7:a8:d0:58:f6:31:4a:b1:a4:a6:dd:6f:d9:e8:44:
+         3c:b6:0a:71:d6:7f:b1:08:61:9d:60:ce:75:cf:77:0c:d2:37:
+         86:02:8d:5e:5d:f9:0f:71:b4:16:a8:c1:3d:23:1c:f1:11:b3:
+         56:6e:ca:d0:8d:34:94:e6:87:2a:99:f2:ae:ae:cc:c2:e8:86:
+         de:08:a8:7f:c5:05:fa:6f:81:a7:82:e6:d0:53:9d:34:f4:ac:
+         3e:40:fe:89:57:7a:29:a4:91:7e:0b:c6:51:31:e5:10:2f:a4:
+         60:76:cd:95:51:1a:be:8b:a1:b0:fd:ad:52:bd:d7:1b:87:60:
+         d2:31:c7:17:c4:18:4f:2d:08:25:a3:a7:4f:b7:92:ca:e2:f5:
+         25:f1:54:75:81:9d:b3:3d:61:a2:f7:da:ed:e1:c6:6f:2c:60:
+         1f:d8:6f:c5:92:05:ab:c9:09:62:49:a9:14:ad:55:11:cc:d6:
+         4a:19:94:99:97:37:1d:81:5f:8b:cf:a3:a8:96:44:51:08:3d:
+         0b:05:65:12:eb:b6:70:80:88:48:72:4f:c6:c2:da:cf:cd:8e:
+         5b:ba:97:2f:60:b4:96:56:49:5e:3a:43:76:63:04:be:2a:f6:
+         c1:ca:a9:94
+-----BEGIN CERTIFICATE-----
+MIIE2DCCA8CgAwIBAgIBADANBgkqhkiG9w0BAQUFADCBxTELMAkGA1UEBhMCVVMx
+DzANBgNVBAgMBk9yZWdvbjESMBAGA1UEBwwJQmVhdmVydG9uMSMwIQYDVQQKDBpQ
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+HRMBAf8EAjAAMB0GA1UdDgQWBBSIWlXAUv9hzVKjNQ/qWpwkOCL3XDALBgNVHQ8E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=
+-----END CERTIFICATE-----

src/greentest/3.12/pycacert.pem

+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number:
+            cb:2d:80:99:5a:69:52:5b
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Validity
+            Not Before: Aug 29 14:23:16 2018 GMT
+            Not After : Oct 28 14:23:16 2037 GMT
+        Subject: C=XY, O=Python Software Foundation CA, CN=our-ca-server
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (3072 bit)
+                Modulus:
+                    00:b1:84:d3:4f:5c:04:80:91:4f:82:49:ba:30:0b:
+                    f7:e8:cb:f9:14:ef:3d:9f:0b:3f:0a:62:fc:1b:20:
+                    a5:20:d1:60:5f:87:5a:1f:16:d1:ed:97:70:a6:da:
+                    1b:03:2c:7e:a0:5b:3c:4e:2f:16:7e:0e:89:29:89:
+                    e1:10:0d:38:da:6a:77:5f:37:13:b3:28:8f:7b:5c:
+                    76:ad:9e:e8:d3:f5:9e:f5:83:aa:10:07:8d:e6:51:
+                    98:f0:7c:0d:52:f2:0c:21:1e:d8:b9:99:26:a9:25:
+                    03:27:bb:5c:ab:2e:33:27:a2:d6:23:a8:83:87:44:
+                    29:9f:97:b5:24:6f:d7:b9:0a:fd:28:ee:bb:fb:41:
+                    58:ea:1d:99:dd:44:86:ab:98:be:1c:dc:cb:a9:89:
+                    1d:36:5c:a9:e8:47:b5:f4:52:48:aa:b5:a4:67:ef:
+                    3e:d7:e2:d3:33:de:98:29:d8:7a:b0:59:5c:e7:b1:
+                    0e:cc:fd:9f:eb:f6:d5:3a:0e:0b:cf:fe:0b:3d:a2:
+                    bf:45:18:ce:94:e7:a9:55:60:88:d4:d8:84:50:79:
+                    05:2e:41:03:74:ae:67:26:f6:5b:12:08:98:ce:0a:
+                    97:ed:01:0f:89:4f:17:5c:fa:3e:1d:35:24:47:92:
+                    32:bf:f7:a4:18:2b:3c:d0:48:99:e1:a2:cd:a3:cc:
+                    50:53:20:b5:c6:e3:66:85:7b:57:10:ec:33:4f:c1:
+                    77:e7:1b:7e:81:c6:c4:f3:45:20:c0:91:dd:13:76:
+                    7b:03:af:f6:76:8e:a2:83:63:57:dd:63:bc:bb:5a:
+                    1c:17:52:8a:d6:06:48:cc:0f:c7:d3:4f:e8:da:22:
+                    6c:86:f9:4e:5c:a6:29:07:3b:d8:56:4c:59:b3:20:
+                    49:07:7b:94:84:cf:2b:c3:1c:1a:4e:87:64:92:ba:
+                    42:e1:e6:ad:7d:1d:f6:54:90:6f:2b:e9:b3:cc:4b:
+                    2b:33:26:23:fd:65:c0:3c:f0:79:ad:c9:c1:81:ef:
+                    37:04:e0:27:3e:b0:ee:15:be:51
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                B3:8A:A0:A2:BA:71:F1:A8:24:79:D4:A4:5B:25:36:15:1E:49:C8:CD
+            X509v3 Authority Key Identifier: 
+                keyid:B3:8A:A0:A2:BA:71:F1:A8:24:79:D4:A4:5B:25:36:15:1E:49:C8:CD
+
+            X509v3 Basic Constraints: 
+                CA:TRUE
+    Signature Algorithm: sha256WithRSAEncryption
+         6b:32:2f:e7:05:18:ea:5c:c9:95:f4:e0:c2:0c:41:5f:1a:0a:
+         95:c9:c7:7d:05:ee:8a:56:29:35:50:40:b7:fe:9f:7b:5b:1c:
+         c3:69:2f:a0:cb:d2:b8:91:2f:50:19:62:f7:27:18:6d:95:7b:
+         53:16:15:a2:5a:dc:14:e3:fb:b1:32:a9:69:db:a6:33:47:3c:
+         bb:1f:d2:dc:70:f9:6a:2e:0c:d8:8c:6d:e5:5d:1d:43:3c:4e:
+         91:de:a0:c8:da:a0:4b:0e:9d:5e:b6:0f:4a:49:f0:7b:b6:53:
+         9e:fd:35:14:5b:e3:4d:b4:18:a6:36:61:e8:8f:33:9b:d4:05:
+         f9:54:66:df:e0:cb:18:a3:4e:dc:17:a8:a0:b3:c1:a8:f4:d6:
+         9d:ca:7f:68:53:1a:d7:95:da:e8:d3:9e:48:00:71:95:99:11:
+         07:cf:96:c0:7d:ce:7d:30:e8:4f:e1:83:16:33:a1:ff:59:9b:
+         3e:4c:e7:3a:38:01:9f:0f:67:4c:fd:2d:8b:4a:d4:01:46:37:
+         33:e8:13:6b:15:a9:1d:68:76:45:a2:82:33:69:26:30:60:05:
+         c8:8f:bd:b4:75:ab:be:7a:8b:48:68:70:40:b4:1b:51:c5:e6:
+         7a:ad:6b:4f:db:17:c0:60:67:2e:63:61:9b:2c:48:99:b8:76:
+         45:a0:9e:cc:ef:33:1e:50:4e:ab:72:c3:65:c8:b2:79:b3:35:
+         83:21:78:d3:8b:6c:3a:18:e8:65:32:39:b8:c0:9d:71:2f:35:
+         36:8a:c0:17:62:d8:8b:3e:e1:22:18:2b:4c:63:a6:0e:9d:0a:
+         fa:ab:5b:35:fb:88:91:77:4c:8d:8c:9d:a9:cf:fc:ab:c2:e6:
+         5a:05:7b:7e:04:6e:39:cf:93:ce:67:3b:7a:cb:af:b6:36:e1:
+         fb:71:64:45:d4:a6:f0:ce:ef:75:04:99:69:9a:e5:88:0a:10:
+         02:74:89:ec:75:84:44:80:48:df:c1:f7:e9:37:ce:ce:92:92:
+         5c:89:22:08:73:1f
+-----BEGIN CERTIFICATE-----
+MIIEbTCCAtWgAwIBAgIJAMstgJlaaVJbMA0GCSqGSIb3DQEBCwUAME0xCzAJBgNV
+BAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUgRm91bmRhdGlvbiBDQTEW
+MBQGA1UEAwwNb3VyLWNhLXNlcnZlcjAeFw0xODA4MjkxNDIzMTZaFw0zNzEwMjgx
+NDIzMTZaME0xCzAJBgNVBAYTAlhZMSYwJAYDVQQKDB1QeXRob24gU29mdHdhcmUg
+Rm91bmRhdGlvbiBDQTEWMBQGA1UEAwwNb3VyLWNhLXNlcnZlcjCCAaIwDQYJKoZI
+hvcNAQEBBQADggGPADCCAYoCggGBALGE009cBICRT4JJujAL9+jL+RTvPZ8LPwpi
+/BsgpSDRYF+HWh8W0e2XcKbaGwMsfqBbPE4vFn4OiSmJ4RANONpqd183E7Moj3tc
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+-----END CERTIFICATE-----

src/greentest/3.12/pycakey.pem

+-----BEGIN PRIVATE KEY-----
+MIIG/gIBADANBgkqhkiG9w0BAQEFAASCBugwggbkAgEAAoIBgQCxhNNPXASAkU+C
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+yp3jllEn3CBD8Uhs4B+sL/6p
+-----END PRIVATE KEY-----

src/greentest/3.12/revocation.crl

+-----BEGIN X509 CRL-----
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+Dry6t0w2geW6UYVGmb831i8ZP3JVVVwcwi0=
+-----END X509 CRL-----

src/greentest/3.12/secp384r1.pem

+$ openssl genpkey -genparam -algorithm EC -pkeyopt ec_paramgen_curve:secp384r1 -pkeyopt ec_param_enc:named_curve -text
+-----BEGIN EC PARAMETERS-----
+BgUrgQQAIg==
+-----END EC PARAMETERS-----
+ECDSA-Parameters: (384 bit)
+ASN1 OID: secp384r1
+NIST CURVE: P-384

src/greentest/3.12/selfsigned_pythontestdotnet.pem

+-----BEGIN CERTIFICATE-----
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+J5quYKCc/O+I/yDDf8wyBbZ/gvUXzUHTMYGG+bFrn1p7XDbYYeEJ6R/xEg==
+-----END CERTIFICATE-----

src/greentest/3.12/signalinterproctester.py

+import os
+import signal
+import subprocess
+import sys
+import time
+import unittest
+from test import support
+
+
+class SIGUSR1Exception(Exception):
+    pass
+
+
+class InterProcessSignalTests(unittest.TestCase):
+    def setUp(self):
+        self.got_signals = {'SIGHUP': 0, 'SIGUSR1': 0, 'SIGALRM': 0}
+
+    def sighup_handler(self, signum, frame):
+        self.got_signals['SIGHUP'] += 1
+
+    def sigusr1_handler(self, signum, frame):
+        self.got_signals['SIGUSR1'] += 1
+        raise SIGUSR1Exception
+
+    def wait_signal(self, child, signame):
+        if child is not None:
+            # This wait should be interrupted by exc_class
+            # (if set)
+            child.wait()
+
+        start_time = time.monotonic()
+        for _ in support.busy_retry(support.SHORT_TIMEOUT, error=False):
+            if self.got_signals[signame]:
+                return
+            signal.pause()
+        else:
+            dt = time.monotonic() - start_time
+            self.fail('signal %s not received after %.1f seconds'
+                      % (signame, dt))
+
+    def subprocess_send_signal(self, pid, signame):
+        code = 'import os, signal; os.kill(%s, signal.%s)' % (pid, signame)
+        args = [sys.executable, '-I', '-c', code]
+        return subprocess.Popen(args)
+
+    def test_interprocess_signal(self):
+        # Install handlers. This function runs in a sub-process, so we
+        # don't worry about re-setting the default handlers.
+        signal.signal(signal.SIGHUP, self.sighup_handler)
+        signal.signal(signal.SIGUSR1, self.sigusr1_handler)
+        signal.signal(signal.SIGUSR2, signal.SIG_IGN)
+        signal.signal(signal.SIGALRM, signal.default_int_handler)
+
+        # Let the sub-processes know who to send signals to.
+        pid = str(os.getpid())
+
+        with self.subprocess_send_signal(pid, "SIGHUP") as child:
+            self.wait_signal(child, 'SIGHUP')
+        self.assertEqual(self.got_signals, {'SIGHUP': 1, 'SIGUSR1': 0,
+                                            'SIGALRM': 0})
+
+        with self.assertRaises(SIGUSR1Exception):
+            with self.subprocess_send_signal(pid, "SIGUSR1") as child:
+                self.wait_signal(child, 'SIGUSR1')
+        self.assertEqual(self.got_signals, {'SIGHUP': 1, 'SIGUSR1': 1,
+                                            'SIGALRM': 0})
+
+        with self.subprocess_send_signal(pid, "SIGUSR2") as child:
+            # Nothing should happen: SIGUSR2 is ignored
+            child.wait()
+
+        try:
+            with self.assertRaises(KeyboardInterrupt):
+                signal.alarm(1)
+                self.wait_signal(None, 'SIGALRM')
+            self.assertEqual(self.got_signals, {'SIGHUP': 1, 'SIGUSR1': 1,
+                                                'SIGALRM': 0})
+        finally:
+            signal.alarm(0)
+
+
+if __name__ == "__main__":
+    unittest.main()

src/greentest/3.12/ssl_cert.pem

+-----BEGIN CERTIFICATE-----
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+HcVKQHyOeyvnINuBAQ==
+-----END CERTIFICATE-----

src/greentest/3.12/ssl_key.passwd.pem

+-----BEGIN ENCRYPTED PRIVATE KEY-----
+MIIHbTBXBgkqhkiG9w0BBQ0wSjApBgkqhkiG9w0BBQwwHAQI072N7W+PDDMCAggA
+MAwGCCqGSIb3DQIJBQAwHQYJYIZIAWUDBAEqBBA/AuaRNi4vE4KGqI4In+70BIIH
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+oHmMfbdB3GWqGbsUkhY8i6h9op0MU6WOX7ea2Rxyt4t6
+-----END ENCRYPTED PRIVATE KEY-----

src/greentest/3.12/ssl_key.pem

+-----BEGIN PRIVATE KEY-----
+MIIG/wIBADANBgkqhkiG9w0BAQEFAASCBukwggblAgEAAoIBgQCylKlLaKU+hOvJ
+DfriTRLd+IthG5hv28I3A/CGjLICT0rDDtgaXd0uqloJAnjsgn5gMAcStpDW8Rm+
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+zNwzC+QhFTZoOomFoqMgFWujng==
+-----END PRIVATE KEY-----

src/greentest/3.12/talos-2019-0758.pem

+-----BEGIN CERTIFICATE-----
+MIIDqDCCApKgAwIBAgIBAjALBgkqhkiG9w0BAQswHzELMAkGA1UEBhMCVUsxEDAO
+BgNVBAMTB2NvZHktY2EwHhcNMTgwNjE4MTgwMDU4WhcNMjgwNjE0MTgwMDU4WjA7
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+t/dW1gSkNS6sPsM0Q+7HPgEv8CPDNK5eo7vU2seE0iWOkxSyVUuiCEY9ZVGaLVit
+p0C78nZ35Pdv4I+1cosmHl28+es1WI22rrnmdBpH8J1eY6WvUw2xuZHLeNVN0TzV
+Q3qq53AaCWuLOD1AjESWuUCxMZTK9DPS4JKXTK8RLyDeqOvJGjsSWp3kL0y3GaQ+
+10T1rfkKJub2+m9A9duin1fn6tHc2wSvB7m3DA==
+-----END CERTIFICATE-----

src/greentest/3.12/test_context.py

+import concurrent.futures
+import contextvars
+import functools
+import gc
+import random
+import time
+import unittest
+import weakref
+from test.support import threading_helper
+
+try:
+    from _testcapi import hamt
+except ImportError:
+    hamt = None
+
+
+def isolated_context(func):
+    """Needed to make reftracking test mode work."""
+    @functools.wraps(func)
+    def wrapper(*args, **kwargs):
+        ctx = contextvars.Context()
+        return ctx.run(func, *args, **kwargs)
+    return wrapper
+
+
+class ContextTest(unittest.TestCase):
+    def test_context_var_new_1(self):
+        with self.assertRaisesRegex(TypeError, 'takes exactly 1'):
+            contextvars.ContextVar()
+
+        with self.assertRaisesRegex(TypeError, 'must be a str'):
+            contextvars.ContextVar(1)
+
+        c = contextvars.ContextVar('aaa')
+        self.assertEqual(c.name, 'aaa')
+
+        with self.assertRaises(AttributeError):
+            c.name = 'bbb'
+
+        self.assertNotEqual(hash(c), hash('aaa'))
+
+    @isolated_context
+    def test_context_var_repr_1(self):
+        c = contextvars.ContextVar('a')
+        self.assertIn('a', repr(c))
+
+        c = contextvars.ContextVar('a', default=123)
+        self.assertIn('123', repr(c))
+
+        lst = []
+        c = contextvars.ContextVar('a', default=lst)
+        lst.append(c)
+        self.assertIn('...', repr(c))
+        self.assertIn('...', repr(lst))
+
+        t = c.set(1)
+        self.assertIn(repr(c), repr(t))
+        self.assertNotIn(' used ', repr(t))
+        c.reset(t)
+        self.assertIn(' used ', repr(t))
+
+    def test_context_subclassing_1(self):
+        with self.assertRaisesRegex(TypeError, 'not an acceptable base type'):
+            class MyContextVar(contextvars.ContextVar):
+                # Potentially we might want ContextVars to be subclassable.
+                pass
+
+        with self.assertRaisesRegex(TypeError, 'not an acceptable base type'):
+            class MyContext(contextvars.Context):
+                pass
+
+        with self.assertRaisesRegex(TypeError, 'not an acceptable base type'):
+            class MyToken(contextvars.Token):
+                pass
+
+    def test_context_new_1(self):
+        with self.assertRaisesRegex(TypeError, 'any arguments'):
+            contextvars.Context(1)
+        with self.assertRaisesRegex(TypeError, 'any arguments'):
+            contextvars.Context(1, a=1)
+        with self.assertRaisesRegex(TypeError, 'any arguments'):
+            contextvars.Context(a=1)
+        contextvars.Context(**{})
+
+    def test_context_typerrors_1(self):
+        ctx = contextvars.Context()
+
+        with self.assertRaisesRegex(TypeError, 'ContextVar key was expected'):
+            ctx[1]
+        with self.assertRaisesRegex(TypeError, 'ContextVar key was expected'):
+            1 in ctx
+        with self.assertRaisesRegex(TypeError, 'ContextVar key was expected'):
+            ctx.get(1)
+
+    def test_context_get_context_1(self):
+        ctx = contextvars.copy_context()
+        self.assertIsInstance(ctx, contextvars.Context)
+
+    def test_context_run_1(self):
+        ctx = contextvars.Context()
+
+        with self.assertRaisesRegex(TypeError, 'missing 1 required'):
+            ctx.run()
+
+    def test_context_run_2(self):
+        ctx = contextvars.Context()
+
+        def func(*args, **kwargs):
+            kwargs['spam'] = 'foo'
+            args += ('bar',)
+            return args, kwargs
+
+        for f in (func, functools.partial(func)):
+            # partial doesn't support FASTCALL
+
+            self.assertEqual(ctx.run(f), (('bar',), {'spam': 'foo'}))
+            self.assertEqual(ctx.run(f, 1), ((1, 'bar'), {'spam': 'foo'}))
+
+            self.assertEqual(
+                ctx.run(f, a=2),
+                (('bar',), {'a': 2, 'spam': 'foo'}))
+
+            self.assertEqual(
+                ctx.run(f, 11, a=2),
+                ((11, 'bar'), {'a': 2, 'spam': 'foo'}))
+
+            a = {}
+            self.assertEqual(
+                ctx.run(f, 11, **a),
+                ((11, 'bar'), {'spam': 'foo'}))
+            self.assertEqual(a, {})
+
+    def test_context_run_3(self):
+        ctx = contextvars.Context()
+
+        def func(*args, **kwargs):
+            1 / 0
+
+        with self.assertRaises(ZeroDivisionError):
+            ctx.run(func)
+        with self.assertRaises(ZeroDivisionError):
+            ctx.run(func, 1, 2)
+        with self.assertRaises(ZeroDivisionError):
+            ctx.run(func, 1, 2, a=123)
+
+    @isolated_context
+    def test_context_run_4(self):
+        ctx1 = contextvars.Context()
+        ctx2 = contextvars.Context()
+        var = contextvars.ContextVar('var')
+
+        def func2():
+            self.assertIsNone(var.get(None))
+
+        def func1():
+            self.assertIsNone(var.get(None))
+            var.set('spam')
+            ctx2.run(func2)
+            self.assertEqual(var.get(None), 'spam')
+
+            cur = contextvars.copy_context()
+            self.assertEqual(len(cur), 1)
+            self.assertEqual(cur[var], 'spam')
+            return cur
+
+        returned_ctx = ctx1.run(func1)
+        self.assertEqual(ctx1, returned_ctx)
+        self.assertEqual(returned_ctx[var], 'spam')
+        self.assertIn(var, returned_ctx)
+
+    def test_context_run_5(self):
+        ctx = contextvars.Context()
+        var = contextvars.ContextVar('var')
+
+        def func():
+            self.assertIsNone(var.get(None))
+            var.set('spam')
+            1 / 0
+
+        with self.assertRaises(ZeroDivisionError):
+            ctx.run(func)
+
+        self.assertIsNone(var.get(None))
+
+    def test_context_run_6(self):
+        ctx = contextvars.Context()
+        c = contextvars.ContextVar('a', default=0)
+
+        def fun():
+            self.assertEqual(c.get(), 0)
+            self.assertIsNone(ctx.get(c))
+
+            c.set(42)
+            self.assertEqual(c.get(), 42)
+            self.assertEqual(ctx.get(c), 42)
+
+        ctx.run(fun)
+
+    def test_context_run_7(self):
+        ctx = contextvars.Context()
+
+        def fun():
+            with self.assertRaisesRegex(RuntimeError, 'is already entered'):
+                ctx.run(fun)
+
+        ctx.run(fun)
+
+    @isolated_context
+    def test_context_getset_1(self):
+        c = contextvars.ContextVar('c')
+        with self.assertRaises(LookupError):
+            c.get()
+
+        self.assertIsNone(c.get(None))
+
+        t0 = c.set(42)
+        self.assertEqual(c.get(), 42)
+        self.assertEqual(c.get(None), 42)
+        self.assertIs(t0.old_value, t0.MISSING)
+        self.assertIs(t0.old_value, contextvars.Token.MISSING)
+        self.assertIs(t0.var, c)
+
+        t = c.set('spam')
+        self.assertEqual(c.get(), 'spam')
+        self.assertEqual(c.get(None), 'spam')
+        self.assertEqual(t.old_value, 42)
+        c.reset(t)
+
+        self.assertEqual(c.get(), 42)
+        self.assertEqual(c.get(None), 42)
+
+        c.set('spam2')
+        with self.assertRaisesRegex(RuntimeError, 'has already been used'):
+            c.reset(t)
+        self.assertEqual(c.get(), 'spam2')
+
+        ctx1 = contextvars.copy_context()
+        self.assertIn(c, ctx1)
+
+        c.reset(t0)
+        with self.assertRaisesRegex(RuntimeError, 'has already been used'):
+            c.reset(t0)
+        self.assertIsNone(c.get(None))
+
+        self.assertIn(c, ctx1)
+        self.assertEqual(ctx1[c], 'spam2')
+        self.assertEqual(ctx1.get(c, 'aa'), 'spam2')
+        self.assertEqual(len(ctx1), 1)
+        self.assertEqual(list(ctx1.items()), [(c, 'spam2')])
+        self.assertEqual(list(ctx1.values()), ['spam2'])
+        self.assertEqual(list(ctx1.keys()), [c])
+        self.assertEqual(list(ctx1), [c])
+
+        ctx2 = contextvars.copy_context()
+        self.assertNotIn(c, ctx2)
+        with self.assertRaises(KeyError):
+            ctx2[c]
+        self.assertEqual(ctx2.get(c, 'aa'), 'aa')
+        self.assertEqual(len(ctx2), 0)
+        self.assertEqual(list(ctx2), [])
+
+    @isolated_context
+    def test_context_getset_2(self):
+        v1 = contextvars.ContextVar('v1')
+        v2 = contextvars.ContextVar('v2')
+
+        t1 = v1.set(42)
+        with self.assertRaisesRegex(ValueError, 'by a different'):
+            v2.reset(t1)
+
+    @isolated_context
+    def test_context_getset_3(self):
+        c = contextvars.ContextVar('c', default=42)
+        ctx = contextvars.Context()
+
+        def fun():
+            self.assertEqual(c.get(), 42)
+            with self.assertRaises(KeyError):
+                ctx[c]
+            self.assertIsNone(ctx.get(c))
+            self.assertEqual(ctx.get(c, 'spam'), 'spam')
+            self.assertNotIn(c, ctx)
+            self.assertEqual(list(ctx.keys()), [])
+
+            t = c.set(1)
+            self.assertEqual(list(ctx.keys()), [c])
+            self.assertEqual(ctx[c], 1)
+
+            c.reset(t)
+            self.assertEqual(list(ctx.keys()), [])
+            with self.assertRaises(KeyError):
+                ctx[c]
+
+        ctx.run(fun)
+
+    @isolated_context
+    def test_context_getset_4(self):
+        c = contextvars.ContextVar('c', default=42)
+        ctx = contextvars.Context()
+
+        tok = ctx.run(c.set, 1)
+
+        with self.assertRaisesRegex(ValueError, 'different Context'):
+            c.reset(tok)
+
+    @isolated_context
+    def test_context_getset_5(self):
+        c = contextvars.ContextVar('c', default=42)
+        c.set([])
+
+        def fun():
+            c.set([])
+            c.get().append(42)
+            self.assertEqual(c.get(), [42])
+
+        contextvars.copy_context().run(fun)
+        self.assertEqual(c.get(), [])
+
+    def test_context_copy_1(self):
+        ctx1 = contextvars.Context()
+        c = contextvars.ContextVar('c', default=42)
+
+        def ctx1_fun():
+            c.set(10)
+
+            ctx2 = ctx1.copy()
+            self.assertEqual(ctx2[c], 10)
+
+            c.set(20)
+            self.assertEqual(ctx1[c], 20)
+            self.assertEqual(ctx2[c], 10)
+
+            ctx2.run(ctx2_fun)
+            self.assertEqual(ctx1[c], 20)
+            self.assertEqual(ctx2[c], 30)
+
+        def ctx2_fun():
+            self.assertEqual(c.get(), 10)
+            c.set(30)
+            self.assertEqual(c.get(), 30)
+
+        ctx1.run(ctx1_fun)
+
+    @isolated_context
+    @threading_helper.requires_working_threading()
+    def test_context_threads_1(self):
+        cvar = contextvars.ContextVar('cvar')
+
+        def sub(num):
+            for i in range(10):
+                cvar.set(num + i)
+                time.sleep(random.uniform(0.001, 0.05))
+                self.assertEqual(cvar.get(), num + i)
+            return num
+
+        tp = concurrent.futures.ThreadPoolExecutor(max_workers=10)
+        try:
+            results = list(tp.map(sub, range(10)))
+        finally:
+            tp.shutdown()
+        self.assertEqual(results, list(range(10)))
+
+
+# HAMT Tests
+
+
+class HashKey:
+    _crasher = None
+
+    def __init__(self, hash, name, *, error_on_eq_to=None):
+        assert hash != -1
+        self.name = name
+        self.hash = hash
+        self.error_on_eq_to = error_on_eq_to
+
+    def __repr__(self):
+        return f'<Key name:{self.name} hash:{self.hash}>'
+
+    def __hash__(self):
+        if self._crasher is not None and self._crasher.error_on_hash:
+            raise HashingError
+
+        return self.hash
+
+    def __eq__(self, other):
+        if not isinstance(other, HashKey):
+            return NotImplemented
+
+        if self._crasher is not None and self._crasher.error_on_eq:
+            raise EqError
+
+        if self.error_on_eq_to is not None and self.error_on_eq_to is other:
+            raise ValueError(f'cannot compare {self!r} to {other!r}')
+        if other.error_on_eq_to is not None and other.error_on_eq_to is self:
+            raise ValueError(f'cannot compare {other!r} to {self!r}')
+
+        return (self.name, self.hash) == (other.name, other.hash)
+
+
+class KeyStr(str):
+    def __hash__(self):
+        if HashKey._crasher is not None and HashKey._crasher.error_on_hash:
+            raise HashingError
+        return super().__hash__()
+
+    def __eq__(self, other):
+        if HashKey._crasher is not None and HashKey._crasher.error_on_eq:
+            raise EqError
+        return super().__eq__(other)
+
+
+class HaskKeyCrasher:
+    def __init__(self, *, error_on_hash=False, error_on_eq=False):
+        self.error_on_hash = error_on_hash
+        self.error_on_eq = error_on_eq
+
+    def __enter__(self):
+        if HashKey._crasher is not None:
+            raise RuntimeError('cannot nest crashers')
+        HashKey._crasher = self
+
+    def __exit__(self, *exc):
+        HashKey._crasher = None
+
+
+class HashingError(Exception):
+    pass
+
+
+class EqError(Exception):
+    pass
+
+
+@unittest.skipIf(hamt is None, '_testcapi lacks "hamt()" function')
+class HamtTest(unittest.TestCase):
+
+    def test_hashkey_helper_1(self):
+        k1 = HashKey(10, 'aaa')
+        k2 = HashKey(10, 'bbb')
+
+        self.assertNotEqual(k1, k2)
+        self.assertEqual(hash(k1), hash(k2))
+
+        d = dict()
+        d[k1] = 'a'
+        d[k2] = 'b'
+
+        self.assertEqual(d[k1], 'a')
+        self.assertEqual(d[k2], 'b')
+
+    def test_hamt_basics_1(self):
+        h = hamt()
+        h = None  # NoQA
+
+    def test_hamt_basics_2(self):
+        h = hamt()
+        self.assertEqual(len(h), 0)
+
+        h2 = h.set('a', 'b')
+        self.assertIsNot(h, h2)
+        self.assertEqual(len(h), 0)
+        self.assertEqual(len(h2), 1)
+
+        self.assertIsNone(h.get('a'))
+        self.assertEqual(h.get('a', 42), 42)
+
+        self.assertEqual(h2.get('a'), 'b')
+
+        h3 = h2.set('b', 10)
+        self.assertIsNot(h2, h3)
+        self.assertEqual(len(h), 0)
+        self.assertEqual(len(h2), 1)
+        self.assertEqual(len(h3), 2)
+        self.assertEqual(h3.get('a'), 'b')
+        self.assertEqual(h3.get('b'), 10)
+
+        self.assertIsNone(h.get('b'))
+        self.assertIsNone(h2.get('b'))
+
+        self.assertIsNone(h.get('a'))
+        self.assertEqual(h2.get('a'), 'b')
+
+        h = h2 = h3 = None
+
+    def test_hamt_basics_3(self):
+        h = hamt()
+        o = object()
+        h1 = h.set('1', o)
+        h2 = h1.set('1', o)
+        self.assertIs(h1, h2)
+
+    def test_hamt_basics_4(self):
+        h = hamt()
+        h1 = h.set('key', [])
+        h2 = h1.set('key', [])
+        self.assertIsNot(h1, h2)
+        self.assertEqual(len(h1), 1)
+        self.assertEqual(len(h2), 1)
+        self.assertIsNot(h1.get('key'), h2.get('key'))
+
+    def test_hamt_collision_1(self):
+        k1 = HashKey(10, 'aaa')
+        k2 = HashKey(10, 'bbb')
+        k3 = HashKey(10, 'ccc')
+
+        h = hamt()
+        h2 = h.set(k1, 'a')
+        h3 = h2.set(k2, 'b')
+
+        self.assertEqual(h.get(k1), None)
+        self.assertEqual(h.get(k2), None)
+
+        self.assertEqual(h2.get(k1), 'a')
+        self.assertEqual(h2.get(k2), None)
+
+        self.assertEqual(h3.get(k1), 'a')
+        self.assertEqual(h3.get(k2), 'b')
+
+        h4 = h3.set(k2, 'cc')
+        h5 = h4.set(k3, 'aa')
+
+        self.assertEqual(h3.get(k1), 'a')
+        self.assertEqual(h3.get(k2), 'b')
+        self.assertEqual(h4.get(k1), 'a')
+        self.assertEqual(h4.get(k2), 'cc')
+        self.assertEqual(h4.get(k3), None)
+        self.assertEqual(h5.get(k1), 'a')
+        self.assertEqual(h5.get(k2), 'cc')
+        self.assertEqual(h5.get(k2), 'cc')
+        self.assertEqual(h5.get(k3), 'aa')
+
+        self.assertEqual(len(h), 0)
+        self.assertEqual(len(h2), 1)
+        self.assertEqual(len(h3), 2)
+        self.assertEqual(len(h4), 2)
+        self.assertEqual(len(h5), 3)
+
+    def test_hamt_collision_3(self):
+        # Test that iteration works with the deepest tree possible.
+        # https://github.com/python/cpython/issues/93065
+
+        C = HashKey(0b10000000_00000000_00000000_00000000, 'C')
+        D = HashKey(0b10000000_00000000_00000000_00000000, 'D')
+
+        E = HashKey(0b00000000_00000000_00000000_00000000, 'E')
+
+        h = hamt()
+        h = h.set(C, 'C')
+        h = h.set(D, 'D')
+        h = h.set(E, 'E')
+
+        # BitmapNode(size=2 count=1 bitmap=0b1):
+        #   NULL:
+        #     BitmapNode(size=2 count=1 bitmap=0b1):
+        #       NULL:
+        #         BitmapNode(size=2 count=1 bitmap=0b1):
+        #           NULL:
+        #             BitmapNode(size=2 count=1 bitmap=0b1):
+        #               NULL:
+        #                 BitmapNode(size=2 count=1 bitmap=0b1):
+        #                   NULL:
+        #                     BitmapNode(size=2 count=1 bitmap=0b1):
+        #                       NULL:
+        #                         BitmapNode(size=4 count=2 bitmap=0b101):
+        #                           <Key name:E hash:0>: 'E'
+        #                           NULL:
+        #                             CollisionNode(size=4 id=0x107a24520):
+        #                               <Key name:C hash:2147483648>: 'C'
+        #                               <Key name:D hash:2147483648>: 'D'
+
+        self.assertEqual({k.name for k in h.keys()}, {'C', 'D', 'E'})
+
+    def test_hamt_stress(self):
+        COLLECTION_SIZE = 7000
+        TEST_ITERS_EVERY = 647
+        CRASH_HASH_EVERY = 97
+        CRASH_EQ_EVERY = 11
+        RUN_XTIMES = 3
+
+        for _ in range(RUN_XTIMES):
+            h = hamt()
+            d = dict()
+
+            for i in range(COLLECTION_SIZE):
+                key = KeyStr(i)
+
+                if not (i % CRASH_HASH_EVERY):
+                    with HaskKeyCrasher(error_on_hash=True):
+                        with self.assertRaises(HashingError):
+                            h.set(key, i)
+
+                h = h.set(key, i)
+
+                if not (i % CRASH_EQ_EVERY):
+                    with HaskKeyCrasher(error_on_eq=True):
+                        with self.assertRaises(EqError):
+                            h.get(KeyStr(i))  # really trigger __eq__
+
+                d[key] = i
+                self.assertEqual(len(d), len(h))
+
+                if not (i % TEST_ITERS_EVERY):
+                    self.assertEqual(set(h.items()), set(d.items()))
+                    self.assertEqual(len(h.items()), len(d.items()))
+
+            self.assertEqual(len(h), COLLECTION_SIZE)
+
+            for key in range(COLLECTION_SIZE):
+                self.assertEqual(h.get(KeyStr(key), 'not found'), key)
+
+            keys_to_delete = list(range(COLLECTION_SIZE))
+            random.shuffle(keys_to_delete)
+            for iter_i, i in enumerate(keys_to_delete):
+                key = KeyStr(i)
+
+                if not (iter_i % CRASH_HASH_EVERY):
+                    with HaskKeyCrasher(error_on_hash=True):
+                        with self.assertRaises(HashingError):
+                            h.delete(key)
+
+                if not (iter_i % CRASH_EQ_EVERY):
+                    with HaskKeyCrasher(error_on_eq=True):
+                        with self.assertRaises(EqError):
+                            h.delete(KeyStr(i))
+
+                h = h.delete(key)
+                self.assertEqual(h.get(key, 'not found'), 'not found')
+                del d[key]
+                self.assertEqual(len(d), len(h))
+
+                if iter_i == COLLECTION_SIZE // 2:
+                    hm = h
+                    dm = d.copy()
+
+                if not (iter_i % TEST_ITERS_EVERY):
+                    self.assertEqual(set(h.keys()), set(d.keys()))
+                    self.assertEqual(len(h.keys()), len(d.keys()))
+
+            self.assertEqual(len(d), 0)
+            self.assertEqual(len(h), 0)
+
+            # ============
+
+            for key in dm:
+                self.assertEqual(hm.get(str(key)), dm[key])
+            self.assertEqual(len(dm), len(hm))
+
+            for i, key in enumerate(keys_to_delete):
+                hm = hm.delete(str(key))
+                self.assertEqual(hm.get(str(key), 'not found'), 'not found')
+                dm.pop(str(key), None)
+                self.assertEqual(len(d), len(h))
+
+                if not (i % TEST_ITERS_EVERY):
+                    self.assertEqual(set(h.values()), set(d.values()))
+                    self.assertEqual(len(h.values()), len(d.values()))
+
+            self.assertEqual(len(d), 0)
+            self.assertEqual(len(h), 0)
+            self.assertEqual(list(h.items()), [])
+
+    def test_hamt_delete_1(self):
+        A = HashKey(100, 'A')
+        B = HashKey(101, 'B')
+        C = HashKey(102, 'C')
+        D = HashKey(103, 'D')
+        E = HashKey(104, 'E')
+        Z = HashKey(-100, 'Z')
+
+        Er = HashKey(103, 'Er', error_on_eq_to=D)
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(B, 'b')
+        h = h.set(C, 'c')
+        h = h.set(D, 'd')
+        h = h.set(E, 'e')
+
+        orig_len = len(h)
+
+        # BitmapNode(size=10 bitmap=0b111110000 id=0x10eadc618):
+        #     <Key name:A hash:100>: 'a'
+        #     <Key name:B hash:101>: 'b'
+        #     <Key name:C hash:102>: 'c'
+        #     <Key name:D hash:103>: 'd'
+        #     <Key name:E hash:104>: 'e'
+
+        h = h.delete(C)
+        self.assertEqual(len(h), orig_len - 1)
+
+        with self.assertRaisesRegex(ValueError, 'cannot compare'):
+            h.delete(Er)
+
+        h = h.delete(D)
+        self.assertEqual(len(h), orig_len - 2)
+
+        h2 = h.delete(Z)
+        self.assertIs(h2, h)
+
+        h = h.delete(A)
+        self.assertEqual(len(h), orig_len - 3)
+
+        self.assertEqual(h.get(A, 42), 42)
+        self.assertEqual(h.get(B), 'b')
+        self.assertEqual(h.get(E), 'e')
+
+    def test_hamt_delete_2(self):
+        A = HashKey(100, 'A')
+        B = HashKey(201001, 'B')
+        C = HashKey(101001, 'C')
+        D = HashKey(103, 'D')
+        E = HashKey(104, 'E')
+        Z = HashKey(-100, 'Z')
+
+        Er = HashKey(201001, 'Er', error_on_eq_to=B)
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(B, 'b')
+        h = h.set(C, 'c')
+        h = h.set(D, 'd')
+        h = h.set(E, 'e')
+
+        orig_len = len(h)
+
+        # BitmapNode(size=8 bitmap=0b1110010000):
+        #     <Key name:A hash:100>: 'a'
+        #     <Key name:D hash:103>: 'd'
+        #     <Key name:E hash:104>: 'e'
+        #     NULL:
+        #         BitmapNode(size=4 bitmap=0b100000000001000000000):
+        #             <Key name:B hash:201001>: 'b'
+        #             <Key name:C hash:101001>: 'c'
+
+        with self.assertRaisesRegex(ValueError, 'cannot compare'):
+            h.delete(Er)
+
+        h = h.delete(Z)
+        self.assertEqual(len(h), orig_len)
+
+        h = h.delete(C)
+        self.assertEqual(len(h), orig_len - 1)
+
+        h = h.delete(B)
+        self.assertEqual(len(h), orig_len - 2)
+
+        h = h.delete(A)
+        self.assertEqual(len(h), orig_len - 3)
+
+        self.assertEqual(h.get(D), 'd')
+        self.assertEqual(h.get(E), 'e')
+
+        h = h.delete(A)
+        h = h.delete(B)
+        h = h.delete(D)
+        h = h.delete(E)
+        self.assertEqual(len(h), 0)
+
+    def test_hamt_delete_3(self):
+        A = HashKey(100, 'A')
+        B = HashKey(101, 'B')
+        C = HashKey(100100, 'C')
+        D = HashKey(100100, 'D')
+        E = HashKey(104, 'E')
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(B, 'b')
+        h = h.set(C, 'c')
+        h = h.set(D, 'd')
+        h = h.set(E, 'e')
+
+        orig_len = len(h)
+
+        # BitmapNode(size=6 bitmap=0b100110000):
+        #     NULL:
+        #         BitmapNode(size=4 bitmap=0b1000000000000000000001000):
+        #             <Key name:A hash:100>: 'a'
+        #             NULL:
+        #                 CollisionNode(size=4 id=0x108572410):
+        #                     <Key name:C hash:100100>: 'c'
+        #                     <Key name:D hash:100100>: 'd'
+        #     <Key name:B hash:101>: 'b'
+        #     <Key name:E hash:104>: 'e'
+
+        h = h.delete(A)
+        self.assertEqual(len(h), orig_len - 1)
+
+        h = h.delete(E)
+        self.assertEqual(len(h), orig_len - 2)
+
+        self.assertEqual(h.get(C), 'c')
+        self.assertEqual(h.get(B), 'b')
+
+    def test_hamt_delete_4(self):
+        A = HashKey(100, 'A')
+        B = HashKey(101, 'B')
+        C = HashKey(100100, 'C')
+        D = HashKey(100100, 'D')
+        E = HashKey(100100, 'E')
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(B, 'b')
+        h = h.set(C, 'c')
+        h = h.set(D, 'd')
+        h = h.set(E, 'e')
+
+        orig_len = len(h)
+
+        # BitmapNode(size=4 bitmap=0b110000):
+        #     NULL:
+        #         BitmapNode(size=4 bitmap=0b1000000000000000000001000):
+        #             <Key name:A hash:100>: 'a'
+        #             NULL:
+        #                 CollisionNode(size=6 id=0x10515ef30):
+        #                     <Key name:C hash:100100>: 'c'
+        #                     <Key name:D hash:100100>: 'd'
+        #                     <Key name:E hash:100100>: 'e'
+        #     <Key name:B hash:101>: 'b'
+
+        h = h.delete(D)
+        self.assertEqual(len(h), orig_len - 1)
+
+        h = h.delete(E)
+        self.assertEqual(len(h), orig_len - 2)
+
+        h = h.delete(C)
+        self.assertEqual(len(h), orig_len - 3)
+
+        h = h.delete(A)
+        self.assertEqual(len(h), orig_len - 4)
+
+        h = h.delete(B)
+        self.assertEqual(len(h), 0)
+
+    def test_hamt_delete_5(self):
+        h = hamt()
+
+        keys = []
+        for i in range(17):
+            key = HashKey(i, str(i))
+            keys.append(key)
+            h = h.set(key, f'val-{i}')
+
+        collision_key16 = HashKey(16, '18')
+        h = h.set(collision_key16, 'collision')
+
+        # ArrayNode(id=0x10f8b9318):
+        #     0::
+        #     BitmapNode(size=2 count=1 bitmap=0b1):
+        #         <Key name:0 hash:0>: 'val-0'
+        #
+        # ... 14 more BitmapNodes ...
+        #
+        #     15::
+        #     BitmapNode(size=2 count=1 bitmap=0b1):
+        #         <Key name:15 hash:15>: 'val-15'
+        #
+        #     16::
+        #     BitmapNode(size=2 count=1 bitmap=0b1):
+        #         NULL:
+        #             CollisionNode(size=4 id=0x10f2f5af8):
+        #                 <Key name:16 hash:16>: 'val-16'
+        #                 <Key name:18 hash:16>: 'collision'
+
+        self.assertEqual(len(h), 18)
+
+        h = h.delete(keys[2])
+        self.assertEqual(len(h), 17)
+
+        h = h.delete(collision_key16)
+        self.assertEqual(len(h), 16)
+        h = h.delete(keys[16])
+        self.assertEqual(len(h), 15)
+
+        h = h.delete(keys[1])
+        self.assertEqual(len(h), 14)
+        h = h.delete(keys[1])
+        self.assertEqual(len(h), 14)
+
+        for key in keys:
+            h = h.delete(key)
+        self.assertEqual(len(h), 0)
+
+    def test_hamt_items_1(self):
+        A = HashKey(100, 'A')
+        B = HashKey(201001, 'B')
+        C = HashKey(101001, 'C')
+        D = HashKey(103, 'D')
+        E = HashKey(104, 'E')
+        F = HashKey(110, 'F')
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(B, 'b')
+        h = h.set(C, 'c')
+        h = h.set(D, 'd')
+        h = h.set(E, 'e')
+        h = h.set(F, 'f')
+
+        it = h.items()
+        self.assertEqual(
+            set(list(it)),
+            {(A, 'a'), (B, 'b'), (C, 'c'), (D, 'd'), (E, 'e'), (F, 'f')})
+
+    def test_hamt_items_2(self):
+        A = HashKey(100, 'A')
+        B = HashKey(101, 'B')
+        C = HashKey(100100, 'C')
+        D = HashKey(100100, 'D')
+        E = HashKey(100100, 'E')
+        F = HashKey(110, 'F')
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(B, 'b')
+        h = h.set(C, 'c')
+        h = h.set(D, 'd')
+        h = h.set(E, 'e')
+        h = h.set(F, 'f')
+
+        it = h.items()
+        self.assertEqual(
+            set(list(it)),
+            {(A, 'a'), (B, 'b'), (C, 'c'), (D, 'd'), (E, 'e'), (F, 'f')})
+
+    def test_hamt_keys_1(self):
+        A = HashKey(100, 'A')
+        B = HashKey(101, 'B')
+        C = HashKey(100100, 'C')
+        D = HashKey(100100, 'D')
+        E = HashKey(100100, 'E')
+        F = HashKey(110, 'F')
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(B, 'b')
+        h = h.set(C, 'c')
+        h = h.set(D, 'd')
+        h = h.set(E, 'e')
+        h = h.set(F, 'f')
+
+        self.assertEqual(set(list(h.keys())), {A, B, C, D, E, F})
+        self.assertEqual(set(list(h)), {A, B, C, D, E, F})
+
+    def test_hamt_items_3(self):
+        h = hamt()
+        self.assertEqual(len(h.items()), 0)
+        self.assertEqual(list(h.items()), [])
+
+    def test_hamt_eq_1(self):
+        A = HashKey(100, 'A')
+        B = HashKey(101, 'B')
+        C = HashKey(100100, 'C')
+        D = HashKey(100100, 'D')
+        E = HashKey(120, 'E')
+
+        h1 = hamt()
+        h1 = h1.set(A, 'a')
+        h1 = h1.set(B, 'b')
+        h1 = h1.set(C, 'c')
+        h1 = h1.set(D, 'd')
+
+        h2 = hamt()
+        h2 = h2.set(A, 'a')
+
+        self.assertFalse(h1 == h2)
+        self.assertTrue(h1 != h2)
+
+        h2 = h2.set(B, 'b')
+        self.assertFalse(h1 == h2)
+        self.assertTrue(h1 != h2)
+
+        h2 = h2.set(C, 'c')
+        self.assertFalse(h1 == h2)
+        self.assertTrue(h1 != h2)
+
+        h2 = h2.set(D, 'd2')
+        self.assertFalse(h1 == h2)
+        self.assertTrue(h1 != h2)
+
+        h2 = h2.set(D, 'd')
+        self.assertTrue(h1 == h2)
+        self.assertFalse(h1 != h2)
+
+        h2 = h2.set(E, 'e')
+        self.assertFalse(h1 == h2)
+        self.assertTrue(h1 != h2)
+
+        h2 = h2.delete(D)
+        self.assertFalse(h1 == h2)
+        self.assertTrue(h1 != h2)
+
+        h2 = h2.set(E, 'd')
+        self.assertFalse(h1 == h2)
+        self.assertTrue(h1 != h2)
+
+    def test_hamt_eq_2(self):
+        A = HashKey(100, 'A')
+        Er = HashKey(100, 'Er', error_on_eq_to=A)
+
+        h1 = hamt()
+        h1 = h1.set(A, 'a')
+
+        h2 = hamt()
+        h2 = h2.set(Er, 'a')
+
+        with self.assertRaisesRegex(ValueError, 'cannot compare'):
+            h1 == h2
+
+        with self.assertRaisesRegex(ValueError, 'cannot compare'):
+            h1 != h2
+
+    def test_hamt_gc_1(self):
+        A = HashKey(100, 'A')
+
+        h = hamt()
+        h = h.set(0, 0)  # empty HAMT node is memoized in hamt.c
+        ref = weakref.ref(h)
+
+        a = []
+        a.append(a)
+        a.append(h)
+        b = []
+        a.append(b)
+        b.append(a)
+        h = h.set(A, b)
+
+        del h, a, b
+
+        gc.collect()
+        gc.collect()
+        gc.collect()
+
+        self.assertIsNone(ref())
+
+    def test_hamt_gc_2(self):
+        A = HashKey(100, 'A')
+        B = HashKey(101, 'B')
+
+        h = hamt()
+        h = h.set(A, 'a')
+        h = h.set(A, h)
+
+        ref = weakref.ref(h)
+        hi = h.items()
+        next(hi)
+
+        del h, hi
+
+        gc.collect()
+        gc.collect()
+        gc.collect()
+
+        self.assertIsNone(ref())
+
+    def test_hamt_in_1(self):
+        A = HashKey(100, 'A')
+        AA = HashKey(100, 'A')
+
+        B = HashKey(101, 'B')
+
+        h = hamt()
+        h = h.set(A, 1)
+
+        self.assertTrue(A in h)
+        self.assertFalse(B in h)
+
+        with self.assertRaises(EqError):
+            with HaskKeyCrasher(error_on_eq=True):
+                AA in h
+
+        with self.assertRaises(HashingError):
+            with HaskKeyCrasher(error_on_hash=True):
+                AA in h
+
+    def test_hamt_getitem_1(self):
+        A = HashKey(100, 'A')
+        AA = HashKey(100, 'A')
+
+        B = HashKey(101, 'B')
+
+        h = hamt()
+        h = h.set(A, 1)
+
+        self.assertEqual(h[A], 1)
+        self.assertEqual(h[AA], 1)
+
+        with self.assertRaises(KeyError):
+            h[B]
+
+        with self.assertRaises(EqError):
+            with HaskKeyCrasher(error_on_eq=True):
+                h[AA]
+
+        with self.assertRaises(HashingError):
+            with HaskKeyCrasher(error_on_hash=True):
+                h[AA]
+
+
+if __name__ == "__main__":
+    unittest.main()

src/greentest/3.12/test_ftplib.py

+"""Test script for ftplib module."""
+
+# Modified by Giampaolo Rodola' to test FTP class, IPv6 and TLS
+# environment
+
+import ftplib
+import socket
+import io
+import errno
+import os
+import threading
+import time
+import unittest
+try:
+    import ssl
+except ImportError:
+    ssl = None
+
+from unittest import TestCase, skipUnless
+from test import support
+from test.support import threading_helper
+from test.support import socket_helper
+from test.support import warnings_helper
+from test.support import asynchat
+from test.support import asyncore
+from test.support.socket_helper import HOST, HOSTv6
+
+
+support.requires_working_socket(module=True)
+
+TIMEOUT = support.LOOPBACK_TIMEOUT
+DEFAULT_ENCODING = 'utf-8'
+# the dummy data returned by server over the data channel when
+# RETR, LIST, NLST, MLSD commands are issued
+RETR_DATA = 'abcde12345\r\n' * 1000 + 'non-ascii char \xAE\r\n'
+LIST_DATA = 'foo\r\nbar\r\n non-ascii char \xAE\r\n'
+NLST_DATA = 'foo\r\nbar\r\n non-ascii char \xAE\r\n'
+MLSD_DATA = ("type=cdir;perm=el;unique==keVO1+ZF4; test\r\n"
+             "type=pdir;perm=e;unique==keVO1+d?3; ..\r\n"
+             "type=OS.unix=slink:/foobar;perm=;unique==keVO1+4G4; foobar\r\n"
+             "type=OS.unix=chr-13/29;perm=;unique==keVO1+5G4; device\r\n"
+             "type=OS.unix=blk-11/108;perm=;unique==keVO1+6G4; block\r\n"
+             "type=file;perm=awr;unique==keVO1+8G4; writable\r\n"
+             "type=dir;perm=cpmel;unique==keVO1+7G4; promiscuous\r\n"
+             "type=dir;perm=;unique==keVO1+1t2; no-exec\r\n"
+             "type=file;perm=r;unique==keVO1+EG4; two words\r\n"
+             "type=file;perm=r;unique==keVO1+IH4;  leading space\r\n"
+             "type=file;perm=r;unique==keVO1+1G4; file1\r\n"
+             "type=dir;perm=cpmel;unique==keVO1+7G4; incoming\r\n"
+             "type=file;perm=r;unique==keVO1+1G4; file2\r\n"
+             "type=file;perm=r;unique==keVO1+1G4; file3\r\n"
+             "type=file;perm=r;unique==keVO1+1G4; file4\r\n"
+             "type=dir;perm=cpmel;unique==SGP1; dir \xAE non-ascii char\r\n"
+             "type=file;perm=r;unique==SGP2; file \xAE non-ascii char\r\n")
+
+
+def default_error_handler():
+    # bpo-44359: Silently ignore socket errors. Such errors occur when a client
+    # socket is closed, in TestFTPClass.tearDown() and makepasv() tests, and
+    # the server gets an error on its side.
+    pass
+
+
+class DummyDTPHandler(asynchat.async_chat):
+    dtp_conn_closed = False
+
+    def __init__(self, conn, baseclass):
+        asynchat.async_chat.__init__(self, conn)
+        self.baseclass = baseclass
+        self.baseclass.last_received_data = ''
+        self.encoding = baseclass.encoding
+
+    def handle_read(self):
+        new_data = self.recv(1024).decode(self.encoding, 'replace')
+        self.baseclass.last_received_data += new_data
+
+    def handle_close(self):
+        # XXX: this method can be called many times in a row for a single
+        # connection, including in clear-text (non-TLS) mode.
+        # (behaviour witnessed with test_data_connection)
+        if not self.dtp_conn_closed:
+            self.baseclass.push('226 transfer complete')
+            self.close()
+            self.dtp_conn_closed = True
+
+    def push(self, what):
+        if self.baseclass.next_data is not None:
+            what = self.baseclass.next_data
+            self.baseclass.next_data = None
+        if not what:
+            return self.close_when_done()
+        super(DummyDTPHandler, self).push(what.encode(self.encoding))
+
+    def handle_error(self):
+        default_error_handler()
+
+
+class DummyFTPHandler(asynchat.async_chat):
+
+    dtp_handler = DummyDTPHandler
+
+    def __init__(self, conn, encoding=DEFAULT_ENCODING):
+        asynchat.async_chat.__init__(self, conn)
+        # tells the socket to handle urgent data inline (ABOR command)
+        self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_OOBINLINE, 1)
+        self.set_terminator(b"\r\n")
+        self.in_buffer = []
+        self.dtp = None
+        self.last_received_cmd = None
+        self.last_received_data = ''
+        self.next_response = ''
+        self.next_data = None
+        self.rest = None
+        self.next_retr_data = RETR_DATA
+        self.push('220 welcome')
+        self.encoding = encoding
+        # We use this as the string IPv4 address to direct the client
+        # to in response to a PASV command.  To test security behavior.
+        # https://bugs.python.org/issue43285/.
+        self.fake_pasv_server_ip = '252.253.254.255'
+
+    def collect_incoming_data(self, data):
+        self.in_buffer.append(data)
+
+    def found_terminator(self):
+        line = b''.join(self.in_buffer).decode(self.encoding)
+        self.in_buffer = []
+        if self.next_response:
+            self.push(self.next_response)
+            self.next_response = ''
+        cmd = line.split(' ')[0].lower()
+        self.last_received_cmd = cmd
+        space = line.find(' ')
+        if space != -1:
+            arg = line[space + 1:]
+        else:
+            arg = ""
+        if hasattr(self, 'cmd_' + cmd):
+            method = getattr(self, 'cmd_' + cmd)
+            method(arg)
+        else:
+            self.push('550 command "%s" not understood.' %cmd)
+
+    def handle_error(self):
+        default_error_handler()
+
+    def push(self, data):
+        asynchat.async_chat.push(self, data.encode(self.encoding) + b'\r\n')
+
+    def cmd_port(self, arg):
+        addr = list(map(int, arg.split(',')))
+        ip = '%d.%d.%d.%d' %tuple(addr[:4])
+        port = (addr[4] * 256) + addr[5]
+        s = socket.create_connection((ip, port), timeout=TIMEOUT)
+        self.dtp = self.dtp_handler(s, baseclass=self)
+        self.push('200 active data connection established')
+
+    def cmd_pasv(self, arg):
+        with socket.create_server((self.socket.getsockname()[0], 0)) as sock:
+            sock.settimeout(TIMEOUT)
+            port = sock.getsockname()[1]
+            ip = self.fake_pasv_server_ip
+            ip = ip.replace('.', ','); p1 = port / 256; p2 = port % 256
+            self.push('227 entering passive mode (%s,%d,%d)' %(ip, p1, p2))
+            conn, addr = sock.accept()
+            self.dtp = self.dtp_handler(conn, baseclass=self)
+
+    def cmd_eprt(self, arg):
+        af, ip, port = arg.split(arg[0])[1:-1]
+        port = int(port)
+        s = socket.create_connection((ip, port), timeout=TIMEOUT)
+        self.dtp = self.dtp_handler(s, baseclass=self)
+        self.push('200 active data connection established')
+
+    def cmd_epsv(self, arg):
+        with socket.create_server((self.socket.getsockname()[0], 0),
+                                  family=socket.AF_INET6) as sock:
+            sock.settimeout(TIMEOUT)
+            port = sock.getsockname()[1]
+            self.push('229 entering extended passive mode (|||%d|)' %port)
+            conn, addr = sock.accept()
+            self.dtp = self.dtp_handler(conn, baseclass=self)
+
+    def cmd_echo(self, arg):
+        # sends back the received string (used by the test suite)
+        self.push(arg)
+
+    def cmd_noop(self, arg):
+        self.push('200 noop ok')
+
+    def cmd_user(self, arg):
+        self.push('331 username ok')
+
+    def cmd_pass(self, arg):
+        self.push('230 password ok')
+
+    def cmd_acct(self, arg):
+        self.push('230 acct ok')
+
+    def cmd_rnfr(self, arg):
+        self.push('350 rnfr ok')
+
+    def cmd_rnto(self, arg):
+        self.push('250 rnto ok')
+
+    def cmd_dele(self, arg):
+        self.push('250 dele ok')
+
+    def cmd_cwd(self, arg):
+        self.push('250 cwd ok')
+
+    def cmd_size(self, arg):
+        self.push('250 1000')
+
+    def cmd_mkd(self, arg):
+        self.push('257 "%s"' %arg)
+
+    def cmd_rmd(self, arg):
+        self.push('250 rmd ok')
+
+    def cmd_pwd(self, arg):
+        self.push('257 "pwd ok"')
+
+    def cmd_type(self, arg):
+        self.push('200 type ok')
+
+    def cmd_quit(self, arg):
+        self.push('221 quit ok')
+        self.close()
+
+    def cmd_abor(self, arg):
+        self.push('226 abor ok')
+
+    def cmd_stor(self, arg):
+        self.push('125 stor ok')
+
+    def cmd_rest(self, arg):
+        self.rest = arg
+        self.push('350 rest ok')
+
+    def cmd_retr(self, arg):
+        self.push('125 retr ok')
+        if self.rest is not None:
+            offset = int(self.rest)
+        else:
+            offset = 0
+        self.dtp.push(self.next_retr_data[offset:])
+        self.dtp.close_when_done()
+        self.rest = None
+
+    def cmd_list(self, arg):
+        self.push('125 list ok')
+        self.dtp.push(LIST_DATA)
+        self.dtp.close_when_done()
+
+    def cmd_nlst(self, arg):
+        self.push('125 nlst ok')
+        self.dtp.push(NLST_DATA)
+        self.dtp.close_when_done()
+
+    def cmd_opts(self, arg):
+        self.push('200 opts ok')
+
+    def cmd_mlsd(self, arg):
+        self.push('125 mlsd ok')
+        self.dtp.push(MLSD_DATA)
+        self.dtp.close_when_done()
+
+    def cmd_setlongretr(self, arg):
+        # For testing. Next RETR will return long line.
+        self.next_retr_data = 'x' * int(arg)
+        self.push('125 setlongretr ok')
+
+
+class DummyFTPServer(asyncore.dispatcher, threading.Thread):
+
+    handler = DummyFTPHandler
+
+    def __init__(self, address, af=socket.AF_INET, encoding=DEFAULT_ENCODING):
+        threading.Thread.__init__(self)
+        asyncore.dispatcher.__init__(self)
+        self.daemon = True
+        self.create_socket(af, socket.SOCK_STREAM)
+        self.bind(address)
+        self.listen(5)
+        self.active = False
+        self.active_lock = threading.Lock()
+        self.host, self.port = self.socket.getsockname()[:2]
+        self.handler_instance = None
+        self.encoding = encoding
+
+    def start(self):
+        assert not self.active
+        self.__flag = threading.Event()
+        threading.Thread.start(self)
+        self.__flag.wait()
+
+    def run(self):
+        self.active = True
+        self.__flag.set()
+        while self.active and asyncore.socket_map:
+            self.active_lock.acquire()
+            asyncore.loop(timeout=0.1, count=1)
+            self.active_lock.release()
+        asyncore.close_all(ignore_all=True)
+
+    def stop(self):
+        assert self.active
+        self.active = False
+        self.join()
+
+    def handle_accepted(self, conn, addr):
+        self.handler_instance = self.handler(conn, encoding=self.encoding)
+
+    def handle_connect(self):
+        self.close()
+    handle_read = handle_connect
+
+    def writable(self):
+        return 0
+
+    def handle_error(self):
+        default_error_handler()
+
+
+if ssl is not None:
+
+    CERTFILE = os.path.join(os.path.dirname(__file__), "keycert3.pem")
+    CAFILE = os.path.join(os.path.dirname(__file__), "pycacert.pem")
+
+    class SSLConnection(asyncore.dispatcher):
+        """An asyncore.dispatcher subclass supporting TLS/SSL."""
+
+        _ssl_accepting = False
+        _ssl_closing = False
+
+        def secure_connection(self):
+            context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+            context.load_cert_chain(CERTFILE)
+            socket = context.wrap_socket(self.socket,
+                                         suppress_ragged_eofs=False,
+                                         server_side=True,
+                                         do_handshake_on_connect=False)
+            self.del_channel()
+            self.set_socket(socket)
+            self._ssl_accepting = True
+
+        def _do_ssl_handshake(self):
+            try:
+                self.socket.do_handshake()
+            except ssl.SSLError as err:
+                if err.args[0] in (ssl.SSL_ERROR_WANT_READ,
+                                   ssl.SSL_ERROR_WANT_WRITE):
+                    return
+                elif err.args[0] == ssl.SSL_ERROR_EOF:
+                    return self.handle_close()
+                # TODO: SSLError does not expose alert information
+                elif "SSLV3_ALERT_BAD_CERTIFICATE" in err.args[1]:
+                    return self.handle_close()
+                raise
+            except OSError as err:
+                if err.args[0] == errno.ECONNABORTED:
+                    return self.handle_close()
+            else:
+                self._ssl_accepting = False
+
+        def _do_ssl_shutdown(self):
+            self._ssl_closing = True
+            try:
+                self.socket = self.socket.unwrap()
+            except ssl.SSLError as err:
+                if err.args[0] in (ssl.SSL_ERROR_WANT_READ,
+                                   ssl.SSL_ERROR_WANT_WRITE):
+                    return
+            except OSError:
+                # Any "socket error" corresponds to a SSL_ERROR_SYSCALL return
+                # from OpenSSL's SSL_shutdown(), corresponding to a
+                # closed socket condition. See also:
+                # http://www.mail-archive.com/openssl-users@openssl.org/msg60710.html
+                pass
+            self._ssl_closing = False
+            if getattr(self, '_ccc', False) is False:
+                super(SSLConnection, self).close()
+            else:
+                pass
+
+        def handle_read_event(self):
+            if self._ssl_accepting:
+                self._do_ssl_handshake()
+            elif self._ssl_closing:
+                self._do_ssl_shutdown()
+            else:
+                super(SSLConnection, self).handle_read_event()
+
+        def handle_write_event(self):
+            if self._ssl_accepting:
+                self._do_ssl_handshake()
+            elif self._ssl_closing:
+                self._do_ssl_shutdown()
+            else:
+                super(SSLConnection, self).handle_write_event()
+
+        def send(self, data):
+            try:
+                return super(SSLConnection, self).send(data)
+            except ssl.SSLError as err:
+                if err.args[0] in (ssl.SSL_ERROR_EOF, ssl.SSL_ERROR_ZERO_RETURN,
+                                   ssl.SSL_ERROR_WANT_READ,
+                                   ssl.SSL_ERROR_WANT_WRITE):
+                    return 0
+                raise
+
+        def recv(self, buffer_size):
+            try:
+                return super(SSLConnection, self).recv(buffer_size)
+            except ssl.SSLError as err:
+                if err.args[0] in (ssl.SSL_ERROR_WANT_READ,
+                                   ssl.SSL_ERROR_WANT_WRITE):
+                    return b''
+                if err.args[0] in (ssl.SSL_ERROR_EOF, ssl.SSL_ERROR_ZERO_RETURN):
+                    self.handle_close()
+                    return b''
+                raise
+
+        def handle_error(self):
+            default_error_handler()
+
+        def close(self):
+            if (isinstance(self.socket, ssl.SSLSocket) and
+                    self.socket._sslobj is not None):
+                self._do_ssl_shutdown()
+            else:
+                super(SSLConnection, self).close()
+
+
+    class DummyTLS_DTPHandler(SSLConnection, DummyDTPHandler):
+        """A DummyDTPHandler subclass supporting TLS/SSL."""
+
+        def __init__(self, conn, baseclass):
+            DummyDTPHandler.__init__(self, conn, baseclass)
+            if self.baseclass.secure_data_channel:
+                self.secure_connection()
+
+
+    class DummyTLS_FTPHandler(SSLConnection, DummyFTPHandler):
+        """A DummyFTPHandler subclass supporting TLS/SSL."""
+
+        dtp_handler = DummyTLS_DTPHandler
+
+        def __init__(self, conn, encoding=DEFAULT_ENCODING):
+            DummyFTPHandler.__init__(self, conn, encoding=encoding)
+            self.secure_data_channel = False
+            self._ccc = False
+
+        def cmd_auth(self, line):
+            """Set up secure control channel."""
+            self.push('234 AUTH TLS successful')
+            self.secure_connection()
+
+        def cmd_ccc(self, line):
+            self.push('220 Reverting back to clear-text')
+            self._ccc = True
+            self._do_ssl_shutdown()
+
+        def cmd_pbsz(self, line):
+            """Negotiate size of buffer for secure data transfer.
+            For TLS/SSL the only valid value for the parameter is '0'.
+            Any other value is accepted but ignored.
+            """
+            self.push('200 PBSZ=0 successful.')
+
+        def cmd_prot(self, line):
+            """Setup un/secure data channel."""
+            arg = line.upper()
+            if arg == 'C':
+                self.push('200 Protection set to Clear')
+                self.secure_data_channel = False
+            elif arg == 'P':
+                self.push('200 Protection set to Private')
+                self.secure_data_channel = True
+            else:
+                self.push("502 Unrecognized PROT type (use C or P).")
+
+
+    class DummyTLS_FTPServer(DummyFTPServer):
+        handler = DummyTLS_FTPHandler
+
+
+class TestFTPClass(TestCase):
+
+    def setUp(self, encoding=DEFAULT_ENCODING):
+        self.server = DummyFTPServer((HOST, 0), encoding=encoding)
+        self.server.start()
+        self.client = ftplib.FTP(timeout=TIMEOUT, encoding=encoding)
+        self.client.connect(self.server.host, self.server.port)
+
+    def tearDown(self):
+        self.client.close()
+        self.server.stop()
+        # Explicitly clear the attribute to prevent dangling thread
+        self.server = None
+        asyncore.close_all(ignore_all=True)
+
+    def check_data(self, received, expected):
+        self.assertEqual(len(received), len(expected))
+        self.assertEqual(received, expected)
+
+    def test_getwelcome(self):
+        self.assertEqual(self.client.getwelcome(), '220 welcome')
+
+    def test_sanitize(self):
+        self.assertEqual(self.client.sanitize('foo'), repr('foo'))
+        self.assertEqual(self.client.sanitize('pass 12345'), repr('pass *****'))
+        self.assertEqual(self.client.sanitize('PASS 12345'), repr('PASS *****'))
+
+    def test_exceptions(self):
+        self.assertRaises(ValueError, self.client.sendcmd, 'echo 40\r\n0')
+        self.assertRaises(ValueError, self.client.sendcmd, 'echo 40\n0')
+        self.assertRaises(ValueError, self.client.sendcmd, 'echo 40\r0')
+        self.assertRaises(ftplib.error_temp, self.client.sendcmd, 'echo 400')
+        self.assertRaises(ftplib.error_temp, self.client.sendcmd, 'echo 499')
+        self.assertRaises(ftplib.error_perm, self.client.sendcmd, 'echo 500')
+        self.assertRaises(ftplib.error_perm, self.client.sendcmd, 'echo 599')
+        self.assertRaises(ftplib.error_proto, self.client.sendcmd, 'echo 999')
+
+    def test_all_errors(self):
+        exceptions = (ftplib.error_reply, ftplib.error_temp, ftplib.error_perm,
+                      ftplib.error_proto, ftplib.Error, OSError,
+                      EOFError)
+        for x in exceptions:
+            try:
+                raise x('exception not included in all_errors set')
+            except ftplib.all_errors:
+                pass
+
+    def test_set_pasv(self):
+        # passive mode is supposed to be enabled by default
+        self.assertTrue(self.client.passiveserver)
+        self.client.set_pasv(True)
+        self.assertTrue(self.client.passiveserver)
+        self.client.set_pasv(False)
+        self.assertFalse(self.client.passiveserver)
+
+    def test_voidcmd(self):
+        self.client.voidcmd('echo 200')
+        self.client.voidcmd('echo 299')
+        self.assertRaises(ftplib.error_reply, self.client.voidcmd, 'echo 199')
+        self.assertRaises(ftplib.error_reply, self.client.voidcmd, 'echo 300')
+
+    def test_login(self):
+        self.client.login()
+
+    def test_acct(self):
+        self.client.acct('passwd')
+
+    def test_rename(self):
+        self.client.rename('a', 'b')
+        self.server.handler_instance.next_response = '200'
+        self.assertRaises(ftplib.error_reply, self.client.rename, 'a', 'b')
+
+    def test_delete(self):
+        self.client.delete('foo')
+        self.server.handler_instance.next_response = '199'
+        self.assertRaises(ftplib.error_reply, self.client.delete, 'foo')
+
+    def test_size(self):
+        self.client.size('foo')
+
+    def test_mkd(self):
+        dir = self.client.mkd('/foo')
+        self.assertEqual(dir, '/foo')
+
+    def test_rmd(self):
+        self.client.rmd('foo')
+
+    def test_cwd(self):
+        dir = self.client.cwd('/foo')
+        self.assertEqual(dir, '250 cwd ok')
+
+    def test_pwd(self):
+        dir = self.client.pwd()
+        self.assertEqual(dir, 'pwd ok')
+
+    def test_quit(self):
+        self.assertEqual(self.client.quit(), '221 quit ok')
+        # Ensure the connection gets closed; sock attribute should be None
+        self.assertEqual(self.client.sock, None)
+
+    def test_abort(self):
+        self.client.abort()
+
+    def test_retrbinary(self):
+        def callback(data):
+            received.append(data.decode(self.client.encoding))
+        received = []
+        self.client.retrbinary('retr', callback)
+        self.check_data(''.join(received), RETR_DATA)
+
+    def test_retrbinary_rest(self):
+        def callback(data):
+            received.append(data.decode(self.client.encoding))
+        for rest in (0, 10, 20):
+            received = []
+            self.client.retrbinary('retr', callback, rest=rest)
+            self.check_data(''.join(received), RETR_DATA[rest:])
+
+    def test_retrlines(self):
+        received = []
+        self.client.retrlines('retr', received.append)
+        self.check_data(''.join(received), RETR_DATA.replace('\r\n', ''))
+
+    def test_storbinary(self):
+        f = io.BytesIO(RETR_DATA.encode(self.client.encoding))
+        self.client.storbinary('stor', f)
+        self.check_data(self.server.handler_instance.last_received_data, RETR_DATA)
+        # test new callback arg
+        flag = []
+        f.seek(0)
+        self.client.storbinary('stor', f, callback=lambda x: flag.append(None))
+        self.assertTrue(flag)
+
+    def test_storbinary_rest(self):
+        data = RETR_DATA.replace('\r\n', '\n').encode(self.client.encoding)
+        f = io.BytesIO(data)
+        for r in (30, '30'):
+            f.seek(0)
+            self.client.storbinary('stor', f, rest=r)
+            self.assertEqual(self.server.handler_instance.rest, str(r))
+
+    def test_storlines(self):
+        data = RETR_DATA.replace('\r\n', '\n').encode(self.client.encoding)
+        f = io.BytesIO(data)
+        self.client.storlines('stor', f)
+        self.check_data(self.server.handler_instance.last_received_data, RETR_DATA)
+        # test new callback arg
+        flag = []
+        f.seek(0)
+        self.client.storlines('stor foo', f, callback=lambda x: flag.append(None))
+        self.assertTrue(flag)
+
+        f = io.StringIO(RETR_DATA.replace('\r\n', '\n'))
+        # storlines() expects a binary file, not a text file
+        with warnings_helper.check_warnings(('', BytesWarning), quiet=True):
+            self.assertRaises(TypeError, self.client.storlines, 'stor foo', f)
+
+    def test_nlst(self):
+        self.client.nlst()
+        self.assertEqual(self.client.nlst(), NLST_DATA.split('\r\n')[:-1])
+
+    def test_dir(self):
+        l = []
+        self.client.dir(lambda x: l.append(x))
+        self.assertEqual(''.join(l), LIST_DATA.replace('\r\n', ''))
+
+    def test_mlsd(self):
+        list(self.client.mlsd())
+        list(self.client.mlsd(path='/'))
+        list(self.client.mlsd(path='/', facts=['size', 'type']))
+
+        ls = list(self.client.mlsd())
+        for name, facts in ls:
+            self.assertIsInstance(name, str)
+            self.assertIsInstance(facts, dict)
+            self.assertTrue(name)
+            self.assertIn('type', facts)
+            self.assertIn('perm', facts)
+            self.assertIn('unique', facts)
+
+        def set_data(data):
+            self.server.handler_instance.next_data = data
+
+        def test_entry(line, type=None, perm=None, unique=None, name=None):
+            type = 'type' if type is None else type
+            perm = 'perm' if perm is None else perm
+            unique = 'unique' if unique is None else unique
+            name = 'name' if name is None else name
+            set_data(line)
+            _name, facts = next(self.client.mlsd())
+            self.assertEqual(_name, name)
+            self.assertEqual(facts['type'], type)
+            self.assertEqual(facts['perm'], perm)
+            self.assertEqual(facts['unique'], unique)
+
+        # plain
+        test_entry('type=type;perm=perm;unique=unique; name\r\n')
+        # "=" in fact value
+        test_entry('type=ty=pe;perm=perm;unique=unique; name\r\n', type="ty=pe")
+        test_entry('type==type;perm=perm;unique=unique; name\r\n', type="=type")
+        test_entry('type=t=y=pe;perm=perm;unique=unique; name\r\n', type="t=y=pe")
+        test_entry('type=====;perm=perm;unique=unique; name\r\n', type="====")
+        # spaces in name
+        test_entry('type=type;perm=perm;unique=unique; na me\r\n', name="na me")
+        test_entry('type=type;perm=perm;unique=unique; name \r\n', name="name ")
+        test_entry('type=type;perm=perm;unique=unique;  name\r\n', name=" name")
+        test_entry('type=type;perm=perm;unique=unique; n am  e\r\n', name="n am  e")
+        # ";" in name
+        test_entry('type=type;perm=perm;unique=unique; na;me\r\n', name="na;me")
+        test_entry('type=type;perm=perm;unique=unique; ;name\r\n', name=";name")
+        test_entry('type=type;perm=perm;unique=unique; ;name;\r\n', name=";name;")
+        test_entry('type=type;perm=perm;unique=unique; ;;;;\r\n', name=";;;;")
+        # case sensitiveness
+        set_data('Type=type;TyPe=perm;UNIQUE=unique; name\r\n')
+        _name, facts = next(self.client.mlsd())
+        for x in facts:
+            self.assertTrue(x.islower())
+        # no data (directory empty)
+        set_data('')
+        self.assertRaises(StopIteration, next, self.client.mlsd())
+        set_data('')
+        for x in self.client.mlsd():
+            self.fail("unexpected data %s" % x)
+
+    def test_makeport(self):
+        with self.client.makeport():
+            # IPv4 is in use, just make sure send_eprt has not been used
+            self.assertEqual(self.server.handler_instance.last_received_cmd,
+                                'port')
+
+    def test_makepasv(self):
+        host, port = self.client.makepasv()
+        conn = socket.create_connection((host, port), timeout=TIMEOUT)
+        conn.close()
+        # IPv4 is in use, just make sure send_epsv has not been used
+        self.assertEqual(self.server.handler_instance.last_received_cmd, 'pasv')
+
+    def test_makepasv_issue43285_security_disabled(self):
+        """Test the opt-in to the old vulnerable behavior."""
+        self.client.trust_server_pasv_ipv4_address = True
+        bad_host, port = self.client.makepasv()
+        self.assertEqual(
+                bad_host, self.server.handler_instance.fake_pasv_server_ip)
+        # Opening and closing a connection keeps the dummy server happy
+        # instead of timing out on accept.
+        socket.create_connection((self.client.sock.getpeername()[0], port),
+                                 timeout=TIMEOUT).close()
+
+    def test_makepasv_issue43285_security_enabled_default(self):
+        self.assertFalse(self.client.trust_server_pasv_ipv4_address)
+        trusted_host, port = self.client.makepasv()
+        self.assertNotEqual(
+                trusted_host, self.server.handler_instance.fake_pasv_server_ip)
+        # Opening and closing a connection keeps the dummy server happy
+        # instead of timing out on accept.
+        socket.create_connection((trusted_host, port), timeout=TIMEOUT).close()
+
+    def test_with_statement(self):
+        self.client.quit()
+
+        def is_client_connected():
+            if self.client.sock is None:
+                return False
+            try:
+                self.client.sendcmd('noop')
+            except (OSError, EOFError):
+                return False
+            return True
+
+        # base test
+        with ftplib.FTP(timeout=TIMEOUT) as self.client:
+            self.client.connect(self.server.host, self.server.port)
+            self.client.sendcmd('noop')
+            self.assertTrue(is_client_connected())
+        self.assertEqual(self.server.handler_instance.last_received_cmd, 'quit')
+        self.assertFalse(is_client_connected())
+
+        # QUIT sent inside the with block
+        with ftplib.FTP(timeout=TIMEOUT) as self.client:
+            self.client.connect(self.server.host, self.server.port)
+            self.client.sendcmd('noop')
+            self.client.quit()
+        self.assertEqual(self.server.handler_instance.last_received_cmd, 'quit')
+        self.assertFalse(is_client_connected())
+
+        # force a wrong response code to be sent on QUIT: error_perm
+        # is expected and the connection is supposed to be closed
+        try:
+            with ftplib.FTP(timeout=TIMEOUT) as self.client:
+                self.client.connect(self.server.host, self.server.port)
+                self.client.sendcmd('noop')
+                self.server.handler_instance.next_response = '550 error on quit'
+        except ftplib.error_perm as err:
+            self.assertEqual(str(err), '550 error on quit')
+        else:
+            self.fail('Exception not raised')
+        # needed to give the threaded server some time to set the attribute
+        # which otherwise would still be == 'noop'
+        time.sleep(0.1)
+        self.assertEqual(self.server.handler_instance.last_received_cmd, 'quit')
+        self.assertFalse(is_client_connected())
+
+    def test_source_address(self):
+        self.client.quit()
+        port = socket_helper.find_unused_port()
+        try:
+            self.client.connect(self.server.host, self.server.port,
+                                source_address=(HOST, port))
+            self.assertEqual(self.client.sock.getsockname()[1], port)
+            self.client.quit()
+        except OSError as e:
+            if e.errno == errno.EADDRINUSE:
+                self.skipTest("couldn't bind to port %d" % port)
+            raise
+
+    def test_source_address_passive_connection(self):
+        port = socket_helper.find_unused_port()
+        self.client.source_address = (HOST, port)
+        try:
+            with self.client.transfercmd('list') as sock:
+                self.assertEqual(sock.getsockname()[1], port)
+        except OSError as e:
+            if e.errno == errno.EADDRINUSE:
+                self.skipTest("couldn't bind to port %d" % port)
+            raise
+
+    def test_parse257(self):
+        self.assertEqual(ftplib.parse257('257 "/foo/bar"'), '/foo/bar')
+        self.assertEqual(ftplib.parse257('257 "/foo/bar" created'), '/foo/bar')
+        self.assertEqual(ftplib.parse257('257 ""'), '')
+        self.assertEqual(ftplib.parse257('257 "" created'), '')
+        self.assertRaises(ftplib.error_reply, ftplib.parse257, '250 "/foo/bar"')
+        # The 257 response is supposed to include the directory
+        # name and in case it contains embedded double-quotes
+        # they must be doubled (see RFC-959, chapter 7, appendix 2).
+        self.assertEqual(ftplib.parse257('257 "/foo/b""ar"'), '/foo/b"ar')
+        self.assertEqual(ftplib.parse257('257 "/foo/b""ar" created'), '/foo/b"ar')
+
+    def test_line_too_long(self):
+        self.assertRaises(ftplib.Error, self.client.sendcmd,
+                          'x' * self.client.maxline * 2)
+
+    def test_retrlines_too_long(self):
+        self.client.sendcmd('SETLONGRETR %d' % (self.client.maxline * 2))
+        received = []
+        self.assertRaises(ftplib.Error,
+                          self.client.retrlines, 'retr', received.append)
+
+    def test_storlines_too_long(self):
+        f = io.BytesIO(b'x' * self.client.maxline * 2)
+        self.assertRaises(ftplib.Error, self.client.storlines, 'stor', f)
+
+    def test_encoding_param(self):
+        encodings = ['latin-1', 'utf-8']
+        for encoding in encodings:
+            with self.subTest(encoding=encoding):
+                self.tearDown()
+                self.setUp(encoding=encoding)
+                self.assertEqual(encoding, self.client.encoding)
+                self.test_retrbinary()
+                self.test_storbinary()
+                self.test_retrlines()
+                new_dir = self.client.mkd('/non-ascii dir \xAE')
+                self.check_data(new_dir, '/non-ascii dir \xAE')
+        # Check default encoding
+        client = ftplib.FTP(timeout=TIMEOUT)
+        self.assertEqual(DEFAULT_ENCODING, client.encoding)
+
+
+@skipUnless(socket_helper.IPV6_ENABLED, "IPv6 not enabled")
+class TestIPv6Environment(TestCase):
+
+    def setUp(self):
+        self.server = DummyFTPServer((HOSTv6, 0),
+                                     af=socket.AF_INET6,
+                                     encoding=DEFAULT_ENCODING)
+        self.server.start()
+        self.client = ftplib.FTP(timeout=TIMEOUT, encoding=DEFAULT_ENCODING)
+        self.client.connect(self.server.host, self.server.port)
+
+    def tearDown(self):
+        self.client.close()
+        self.server.stop()
+        # Explicitly clear the attribute to prevent dangling thread
+        self.server = None
+        asyncore.close_all(ignore_all=True)
+
+    def test_af(self):
+        self.assertEqual(self.client.af, socket.AF_INET6)
+
+    def test_makeport(self):
+        with self.client.makeport():
+            self.assertEqual(self.server.handler_instance.last_received_cmd,
+                                'eprt')
+
+    def test_makepasv(self):
+        host, port = self.client.makepasv()
+        conn = socket.create_connection((host, port), timeout=TIMEOUT)
+        conn.close()
+        self.assertEqual(self.server.handler_instance.last_received_cmd, 'epsv')
+
+    def test_transfer(self):
+        def retr():
+            def callback(data):
+                received.append(data.decode(self.client.encoding))
+            received = []
+            self.client.retrbinary('retr', callback)
+            self.assertEqual(len(''.join(received)), len(RETR_DATA))
+            self.assertEqual(''.join(received), RETR_DATA)
+        self.client.set_pasv(True)
+        retr()
+        self.client.set_pasv(False)
+        retr()
+
+
+@skipUnless(ssl, "SSL not available")
+class TestTLS_FTPClassMixin(TestFTPClass):
+    """Repeat TestFTPClass tests starting the TLS layer for both control
+    and data connections first.
+    """
+
+    def setUp(self, encoding=DEFAULT_ENCODING):
+        self.server = DummyTLS_FTPServer((HOST, 0), encoding=encoding)
+        self.server.start()
+        self.client = ftplib.FTP_TLS(timeout=TIMEOUT, encoding=encoding)
+        self.client.connect(self.server.host, self.server.port)
+        # enable TLS
+        self.client.auth()
+        self.client.prot_p()
+
+
+@skipUnless(ssl, "SSL not available")
+class TestTLS_FTPClass(TestCase):
+    """Specific TLS_FTP class tests."""
+
+    def setUp(self, encoding=DEFAULT_ENCODING):
+        self.server = DummyTLS_FTPServer((HOST, 0), encoding=encoding)
+        self.server.start()
+        self.client = ftplib.FTP_TLS(timeout=TIMEOUT)
+        self.client.connect(self.server.host, self.server.port)
+
+    def tearDown(self):
+        self.client.close()
+        self.server.stop()
+        # Explicitly clear the attribute to prevent dangling thread
+        self.server = None
+        asyncore.close_all(ignore_all=True)
+
+    def test_control_connection(self):
+        self.assertNotIsInstance(self.client.sock, ssl.SSLSocket)
+        self.client.auth()
+        self.assertIsInstance(self.client.sock, ssl.SSLSocket)
+
+    def test_data_connection(self):
+        # clear text
+        with self.client.transfercmd('list') as sock:
+            self.assertNotIsInstance(sock, ssl.SSLSocket)
+            self.assertEqual(sock.recv(1024),
+                             LIST_DATA.encode(self.client.encoding))
+        self.assertEqual(self.client.voidresp(), "226 transfer complete")
+
+        # secured, after PROT P
+        self.client.prot_p()
+        with self.client.transfercmd('list') as sock:
+            self.assertIsInstance(sock, ssl.SSLSocket)
+            # consume from SSL socket to finalize handshake and avoid
+            # "SSLError [SSL] shutdown while in init"
+            self.assertEqual(sock.recv(1024),
+                             LIST_DATA.encode(self.client.encoding))
+        self.assertEqual(self.client.voidresp(), "226 transfer complete")
+
+        # PROT C is issued, the connection must be in cleartext again
+        self.client.prot_c()
+        with self.client.transfercmd('list') as sock:
+            self.assertNotIsInstance(sock, ssl.SSLSocket)
+            self.assertEqual(sock.recv(1024),
+                             LIST_DATA.encode(self.client.encoding))
+        self.assertEqual(self.client.voidresp(), "226 transfer complete")
+
+    def test_login(self):
+        # login() is supposed to implicitly secure the control connection
+        self.assertNotIsInstance(self.client.sock, ssl.SSLSocket)
+        self.client.login()
+        self.assertIsInstance(self.client.sock, ssl.SSLSocket)
+        # make sure that AUTH TLS doesn't get issued again
+        self.client.login()
+
+    def test_auth_issued_twice(self):
+        self.client.auth()
+        self.assertRaises(ValueError, self.client.auth)
+
+    def test_context(self):
+        self.client.quit()
+        ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+        ctx.check_hostname = False
+        ctx.verify_mode = ssl.CERT_NONE
+        self.assertRaises(TypeError, ftplib.FTP_TLS, keyfile=CERTFILE,
+                          context=ctx)
+        self.assertRaises(TypeError, ftplib.FTP_TLS, certfile=CERTFILE,
+                          context=ctx)
+        self.assertRaises(TypeError, ftplib.FTP_TLS, certfile=CERTFILE,
+                          keyfile=CERTFILE, context=ctx)
+
+        self.client = ftplib.FTP_TLS(context=ctx, timeout=TIMEOUT)
+        self.client.connect(self.server.host, self.server.port)
+        self.assertNotIsInstance(self.client.sock, ssl.SSLSocket)
+        self.client.auth()
+        self.assertIs(self.client.sock.context, ctx)
+        self.assertIsInstance(self.client.sock, ssl.SSLSocket)
+
+        self.client.prot_p()
+        with self.client.transfercmd('list') as sock:
+            self.assertIs(sock.context, ctx)
+            self.assertIsInstance(sock, ssl.SSLSocket)
+
+    def test_ccc(self):
+        self.assertRaises(ValueError, self.client.ccc)
+        self.client.login(secure=True)
+        self.assertIsInstance(self.client.sock, ssl.SSLSocket)
+        self.client.ccc()
+        self.assertRaises(ValueError, self.client.sock.unwrap)
+
+    @skipUnless(False, "FIXME: bpo-32706")
+    def test_check_hostname(self):
+        self.client.quit()
+        ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+        self.assertEqual(ctx.verify_mode, ssl.CERT_REQUIRED)
+        self.assertEqual(ctx.check_hostname, True)
+        ctx.load_verify_locations(CAFILE)
+        self.client = ftplib.FTP_TLS(context=ctx, timeout=TIMEOUT)
+
+        # 127.0.0.1 doesn't match SAN
+        self.client.connect(self.server.host, self.server.port)
+        with self.assertRaises(ssl.CertificateError):
+            self.client.auth()
+        # exception quits connection
+
+        self.client.connect(self.server.host, self.server.port)
+        self.client.prot_p()
+        with self.assertRaises(ssl.CertificateError):
+            with self.client.transfercmd("list") as sock:
+                pass
+        self.client.quit()
+
+        self.client.connect("localhost", self.server.port)
+        self.client.auth()
+        self.client.quit()
+
+        self.client.connect("localhost", self.server.port)
+        self.client.prot_p()
+        with self.client.transfercmd("list") as sock:
+            pass
+
+
+class TestTimeouts(TestCase):
+
+    def setUp(self):
+        self.evt = threading.Event()
+        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.sock.settimeout(20)
+        self.port = socket_helper.bind_port(self.sock)
+        self.server_thread = threading.Thread(target=self.server)
+        self.server_thread.daemon = True
+        self.server_thread.start()
+        # Wait for the server to be ready.
+        self.evt.wait()
+        self.evt.clear()
+        self.old_port = ftplib.FTP.port
+        ftplib.FTP.port = self.port
+
+    def tearDown(self):
+        ftplib.FTP.port = self.old_port
+        self.server_thread.join()
+        # Explicitly clear the attribute to prevent dangling thread
+        self.server_thread = None
+
+    def server(self):
+        # This method sets the evt 3 times:
+        #  1) when the connection is ready to be accepted.
+        #  2) when it is safe for the caller to close the connection
+        #  3) when we have closed the socket
+        self.sock.listen()
+        # (1) Signal the caller that we are ready to accept the connection.
+        self.evt.set()
+        try:
+            conn, addr = self.sock.accept()
+        except TimeoutError:
+            pass
+        else:
+            conn.sendall(b"1 Hola mundo\n")
+            conn.shutdown(socket.SHUT_WR)
+            # (2) Signal the caller that it is safe to close the socket.
+            self.evt.set()
+            conn.close()
+        finally:
+            self.sock.close()
+
+    def testTimeoutDefault(self):
+        # default -- use global socket timeout
+        self.assertIsNone(socket.getdefaulttimeout())
+        socket.setdefaulttimeout(30)
+        try:
+            ftp = ftplib.FTP(HOST)
+        finally:
+            socket.setdefaulttimeout(None)
+        self.assertEqual(ftp.sock.gettimeout(), 30)
+        self.evt.wait()
+        ftp.close()
+
+    def testTimeoutNone(self):
+        # no timeout -- do not use global socket timeout
+        self.assertIsNone(socket.getdefaulttimeout())
+        socket.setdefaulttimeout(30)
+        try:
+            ftp = ftplib.FTP(HOST, timeout=None)
+        finally:
+            socket.setdefaulttimeout(None)
+        self.assertIsNone(ftp.sock.gettimeout())
+        self.evt.wait()
+        ftp.close()
+
+    def testTimeoutValue(self):
+        # a value
+        ftp = ftplib.FTP(HOST, timeout=30)
+        self.assertEqual(ftp.sock.gettimeout(), 30)
+        self.evt.wait()
+        ftp.close()
+
+        # bpo-39259
+        with self.assertRaises(ValueError):
+            ftplib.FTP(HOST, timeout=0)
+
+    def testTimeoutConnect(self):
+        ftp = ftplib.FTP()
+        ftp.connect(HOST, timeout=30)
+        self.assertEqual(ftp.sock.gettimeout(), 30)
+        self.evt.wait()
+        ftp.close()
+
+    def testTimeoutDifferentOrder(self):
+        ftp = ftplib.FTP(timeout=30)
+        ftp.connect(HOST)
+        self.assertEqual(ftp.sock.gettimeout(), 30)
+        self.evt.wait()
+        ftp.close()
+
+    def testTimeoutDirectAccess(self):
+        ftp = ftplib.FTP()
+        ftp.timeout = 30
+        ftp.connect(HOST)
+        self.assertEqual(ftp.sock.gettimeout(), 30)
+        self.evt.wait()
+        ftp.close()
+
+
+class MiscTestCase(TestCase):
+    def test__all__(self):
+        not_exported = {
+            'MSG_OOB', 'FTP_PORT', 'MAXLINE', 'CRLF', 'B_CRLF', 'Error',
+            'parse150', 'parse227', 'parse229', 'parse257', 'print_line',
+            'ftpcp', 'test'}
+        support.check__all__(self, ftplib, not_exported=not_exported)
+
+
+def setUpModule():
+    thread_info = threading_helper.threading_setup()
+    unittest.addModuleCleanup(threading_helper.threading_cleanup, *thread_info)
+
+
+if __name__ == '__main__':
+    unittest.main()

src/greentest/3.12/test_httplib.py

+import enum
+import errno
+from http import client, HTTPStatus
+import io
+import itertools
+import os
+import array
+import re
+import socket
+import threading
+
+import unittest
+from unittest import mock
+TestCase = unittest.TestCase
+
+from test import support
+from test.support import os_helper
+from test.support import socket_helper
+
+support.requires_working_socket(module=True)
+
+here = os.path.dirname(__file__)
+# Self-signed cert file for 'localhost'
+CERT_localhost = os.path.join(here, 'keycert.pem')
+# Self-signed cert file for 'fakehostname'
+CERT_fakehostname = os.path.join(here, 'keycert2.pem')
+# Self-signed cert file for self-signed.pythontest.net
+CERT_selfsigned_pythontestdotnet = os.path.join(here, 'selfsigned_pythontestdotnet.pem')
+
+# constants for testing chunked encoding
+chunked_start = (
+    'HTTP/1.1 200 OK\r\n'
+    'Transfer-Encoding: chunked\r\n\r\n'
+    'a\r\n'
+    'hello worl\r\n'
+    '3\r\n'
+    'd! \r\n'
+    '8\r\n'
+    'and now \r\n'
+    '22\r\n'
+    'for something completely different\r\n'
+)
+chunked_expected = b'hello world! and now for something completely different'
+chunk_extension = ";foo=bar"
+last_chunk = "0\r\n"
+last_chunk_extended = "0" + chunk_extension + "\r\n"
+trailers = "X-Dummy: foo\r\nX-Dumm2: bar\r\n"
+chunked_end = "\r\n"
+
+HOST = socket_helper.HOST
+
+class FakeSocket:
+    def __init__(self, text, fileclass=io.BytesIO, host=None, port=None):
+        if isinstance(text, str):
+            text = text.encode("ascii")
+        self.text = text
+        self.fileclass = fileclass
+        self.data = b''
+        self.sendall_calls = 0
+        self.file_closed = False
+        self.host = host
+        self.port = port
+
+    def sendall(self, data):
+        self.sendall_calls += 1
+        self.data += data
+
+    def makefile(self, mode, bufsize=None):
+        if mode != 'r' and mode != 'rb':
+            raise client.UnimplementedFileMode()
+        # keep the file around so we can check how much was read from it
+        self.file = self.fileclass(self.text)
+        self.file.close = self.file_close #nerf close ()
+        return self.file
+
+    def file_close(self):
+        self.file_closed = True
+
+    def close(self):
+        pass
+
+    def setsockopt(self, level, optname, value):
+        pass
+
+class EPipeSocket(FakeSocket):
+
+    def __init__(self, text, pipe_trigger):
+        # When sendall() is called with pipe_trigger, raise EPIPE.
+        FakeSocket.__init__(self, text)
+        self.pipe_trigger = pipe_trigger
+
+    def sendall(self, data):
+        if self.pipe_trigger in data:
+            raise OSError(errno.EPIPE, "gotcha")
+        self.data += data
+
+    def close(self):
+        pass
+
+class NoEOFBytesIO(io.BytesIO):
+    """Like BytesIO, but raises AssertionError on EOF.
+
+    This is used below to test that http.client doesn't try to read
+    more from the underlying file than it should.
+    """
+    def read(self, n=-1):
+        data = io.BytesIO.read(self, n)
+        if data == b'':
+            raise AssertionError('caller tried to read past EOF')
+        return data
+
+    def readline(self, length=None):
+        data = io.BytesIO.readline(self, length)
+        if data == b'':
+            raise AssertionError('caller tried to read past EOF')
+        return data
+
+class FakeSocketHTTPConnection(client.HTTPConnection):
+    """HTTPConnection subclass using FakeSocket; counts connect() calls"""
+
+    def __init__(self, *args):
+        self.connections = 0
+        super().__init__('example.com')
+        self.fake_socket_args = args
+        self._create_connection = self.create_connection
+
+    def connect(self):
+        """Count the number of times connect() is invoked"""
+        self.connections += 1
+        return super().connect()
+
+    def create_connection(self, *pos, **kw):
+        return FakeSocket(*self.fake_socket_args)
+
+class HeaderTests(TestCase):
+    def test_auto_headers(self):
+        # Some headers are added automatically, but should not be added by
+        # .request() if they are explicitly set.
+
+        class HeaderCountingBuffer(list):
+            def __init__(self):
+                self.count = {}
+            def append(self, item):
+                kv = item.split(b':')
+                if len(kv) > 1:
+                    # item is a 'Key: Value' header string
+                    lcKey = kv[0].decode('ascii').lower()
+                    self.count.setdefault(lcKey, 0)
+                    self.count[lcKey] += 1
+                list.append(self, item)
+
+        for explicit_header in True, False:
+            for header in 'Content-length', 'Host', 'Accept-encoding':
+                conn = client.HTTPConnection('example.com')
+                conn.sock = FakeSocket('blahblahblah')
+                conn._buffer = HeaderCountingBuffer()
+
+                body = 'spamspamspam'
+                headers = {}
+                if explicit_header:
+                    headers[header] = str(len(body))
+                conn.request('POST', '/', body, headers)
+                self.assertEqual(conn._buffer.count[header.lower()], 1)
+
+    def test_content_length_0(self):
+
+        class ContentLengthChecker(list):
+            def __init__(self):
+                list.__init__(self)
+                self.content_length = None
+            def append(self, item):
+                kv = item.split(b':', 1)
+                if len(kv) > 1 and kv[0].lower() == b'content-length':
+                    self.content_length = kv[1].strip()
+                list.append(self, item)
+
+        # Here, we're testing that methods expecting a body get a
+        # content-length set to zero if the body is empty (either None or '')
+        bodies = (None, '')
+        methods_with_body = ('PUT', 'POST', 'PATCH')
+        for method, body in itertools.product(methods_with_body, bodies):
+            conn = client.HTTPConnection('example.com')
+            conn.sock = FakeSocket(None)
+            conn._buffer = ContentLengthChecker()
+            conn.request(method, '/', body)
+            self.assertEqual(
+                conn._buffer.content_length, b'0',
+                'Header Content-Length incorrect on {}'.format(method)
+            )
+
+        # For these methods, we make sure that content-length is not set when
+        # the body is None because it might cause unexpected behaviour on the
+        # server.
+        methods_without_body = (
+             'GET', 'CONNECT', 'DELETE', 'HEAD', 'OPTIONS', 'TRACE',
+        )
+        for method in methods_without_body:
+            conn = client.HTTPConnection('example.com')
+            conn.sock = FakeSocket(None)
+            conn._buffer = ContentLengthChecker()
+            conn.request(method, '/', None)
+            self.assertEqual(
+                conn._buffer.content_length, None,
+                'Header Content-Length set for empty body on {}'.format(method)
+            )
+
+        # If the body is set to '', that's considered to be "present but
+        # empty" rather than "missing", so content length would be set, even
+        # for methods that don't expect a body.
+        for method in methods_without_body:
+            conn = client.HTTPConnection('example.com')
+            conn.sock = FakeSocket(None)
+            conn._buffer = ContentLengthChecker()
+            conn.request(method, '/', '')
+            self.assertEqual(
+                conn._buffer.content_length, b'0',
+                'Header Content-Length incorrect on {}'.format(method)
+            )
+
+        # If the body is set, make sure Content-Length is set.
+        for method in itertools.chain(methods_without_body, methods_with_body):
+            conn = client.HTTPConnection('example.com')
+            conn.sock = FakeSocket(None)
+            conn._buffer = ContentLengthChecker()
+            conn.request(method, '/', ' ')
+            self.assertEqual(
+                conn._buffer.content_length, b'1',
+                'Header Content-Length incorrect on {}'.format(method)
+            )
+
+    def test_putheader(self):
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket(None)
+        conn.putrequest('GET','/')
+        conn.putheader('Content-length', 42)
+        self.assertIn(b'Content-length: 42', conn._buffer)
+
+        conn.putheader('Foo', ' bar ')
+        self.assertIn(b'Foo:  bar ', conn._buffer)
+        conn.putheader('Bar', '\tbaz\t')
+        self.assertIn(b'Bar: \tbaz\t', conn._buffer)
+        conn.putheader('Authorization', 'Bearer mytoken')
+        self.assertIn(b'Authorization: Bearer mytoken', conn._buffer)
+        conn.putheader('IterHeader', 'IterA', 'IterB')
+        self.assertIn(b'IterHeader: IterA\r\n\tIterB', conn._buffer)
+        conn.putheader('LatinHeader', b'\xFF')
+        self.assertIn(b'LatinHeader: \xFF', conn._buffer)
+        conn.putheader('Utf8Header', b'\xc3\x80')
+        self.assertIn(b'Utf8Header: \xc3\x80', conn._buffer)
+        conn.putheader('C1-Control', b'next\x85line')
+        self.assertIn(b'C1-Control: next\x85line', conn._buffer)
+        conn.putheader('Embedded-Fold-Space', 'is\r\n allowed')
+        self.assertIn(b'Embedded-Fold-Space: is\r\n allowed', conn._buffer)
+        conn.putheader('Embedded-Fold-Tab', 'is\r\n\tallowed')
+        self.assertIn(b'Embedded-Fold-Tab: is\r\n\tallowed', conn._buffer)
+        conn.putheader('Key Space', 'value')
+        self.assertIn(b'Key Space: value', conn._buffer)
+        conn.putheader('KeySpace ', 'value')
+        self.assertIn(b'KeySpace : value', conn._buffer)
+        conn.putheader(b'Nonbreak\xa0Space', 'value')
+        self.assertIn(b'Nonbreak\xa0Space: value', conn._buffer)
+        conn.putheader(b'\xa0NonbreakSpace', 'value')
+        self.assertIn(b'\xa0NonbreakSpace: value', conn._buffer)
+
+    def test_ipv6host_header(self):
+        # Default host header on IPv6 transaction should be wrapped by [] if
+        # it is an IPv6 address
+        expected = b'GET /foo HTTP/1.1\r\nHost: [2001::]:81\r\n' \
+                   b'Accept-Encoding: identity\r\n\r\n'
+        conn = client.HTTPConnection('[2001::]:81')
+        sock = FakeSocket('')
+        conn.sock = sock
+        conn.request('GET', '/foo')
+        self.assertTrue(sock.data.startswith(expected))
+
+        expected = b'GET /foo HTTP/1.1\r\nHost: [2001:102A::]\r\n' \
+                   b'Accept-Encoding: identity\r\n\r\n'
+        conn = client.HTTPConnection('[2001:102A::]')
+        sock = FakeSocket('')
+        conn.sock = sock
+        conn.request('GET', '/foo')
+        self.assertTrue(sock.data.startswith(expected))
+
+    def test_malformed_headers_coped_with(self):
+        # Issue 19996
+        body = "HTTP/1.1 200 OK\r\nFirst: val\r\n: nval\r\nSecond: val\r\n\r\n"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+
+        self.assertEqual(resp.getheader('First'), 'val')
+        self.assertEqual(resp.getheader('Second'), 'val')
+
+    def test_parse_all_octets(self):
+        # Ensure no valid header field octet breaks the parser
+        body = (
+            b'HTTP/1.1 200 OK\r\n'
+            b"!#$%&'*+-.^_`|~: value\r\n"  # Special token characters
+            b'VCHAR: ' + bytes(range(0x21, 0x7E + 1)) + b'\r\n'
+            b'obs-text: ' + bytes(range(0x80, 0xFF + 1)) + b'\r\n'
+            b'obs-fold: text\r\n'
+            b' folded with space\r\n'
+            b'\tfolded with tab\r\n'
+            b'Content-Length: 0\r\n'
+            b'\r\n'
+        )
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.getheader('Content-Length'), '0')
+        self.assertEqual(resp.msg['Content-Length'], '0')
+        self.assertEqual(resp.getheader("!#$%&'*+-.^_`|~"), 'value')
+        self.assertEqual(resp.msg["!#$%&'*+-.^_`|~"], 'value')
+        vchar = ''.join(map(chr, range(0x21, 0x7E + 1)))
+        self.assertEqual(resp.getheader('VCHAR'), vchar)
+        self.assertEqual(resp.msg['VCHAR'], vchar)
+        self.assertIsNotNone(resp.getheader('obs-text'))
+        self.assertIn('obs-text', resp.msg)
+        for folded in (resp.getheader('obs-fold'), resp.msg['obs-fold']):
+            self.assertTrue(folded.startswith('text'))
+            self.assertIn(' folded with space', folded)
+            self.assertTrue(folded.endswith('folded with tab'))
+
+    def test_invalid_headers(self):
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket('')
+        conn.putrequest('GET', '/')
+
+        # http://tools.ietf.org/html/rfc7230#section-3.2.4, whitespace is no
+        # longer allowed in header names
+        cases = (
+            (b'Invalid\r\nName', b'ValidValue'),
+            (b'Invalid\rName', b'ValidValue'),
+            (b'Invalid\nName', b'ValidValue'),
+            (b'\r\nInvalidName', b'ValidValue'),
+            (b'\rInvalidName', b'ValidValue'),
+            (b'\nInvalidName', b'ValidValue'),
+            (b' InvalidName', b'ValidValue'),
+            (b'\tInvalidName', b'ValidValue'),
+            (b'Invalid:Name', b'ValidValue'),
+            (b':InvalidName', b'ValidValue'),
+            (b'ValidName', b'Invalid\r\nValue'),
+            (b'ValidName', b'Invalid\rValue'),
+            (b'ValidName', b'Invalid\nValue'),
+            (b'ValidName', b'InvalidValue\r\n'),
+            (b'ValidName', b'InvalidValue\r'),
+            (b'ValidName', b'InvalidValue\n'),
+        )
+        for name, value in cases:
+            with self.subTest((name, value)):
+                with self.assertRaisesRegex(ValueError, 'Invalid header'):
+                    conn.putheader(name, value)
+
+    def test_headers_debuglevel(self):
+        body = (
+            b'HTTP/1.1 200 OK\r\n'
+            b'First: val\r\n'
+            b'Second: val1\r\n'
+            b'Second: val2\r\n'
+        )
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock, debuglevel=1)
+        with support.captured_stdout() as output:
+            resp.begin()
+        lines = output.getvalue().splitlines()
+        self.assertEqual(lines[0], "reply: 'HTTP/1.1 200 OK\\r\\n'")
+        self.assertEqual(lines[1], "header: First: val")
+        self.assertEqual(lines[2], "header: Second: val1")
+        self.assertEqual(lines[3], "header: Second: val2")
+
+
+class HttpMethodTests(TestCase):
+    def test_invalid_method_names(self):
+        methods = (
+            'GET\r',
+            'POST\n',
+            'PUT\n\r',
+            'POST\nValue',
+            'POST\nHOST:abc',
+            'GET\nrHost:abc\n',
+            'POST\rRemainder:\r',
+            'GET\rHOST:\n',
+            '\nPUT'
+        )
+
+        for method in methods:
+            with self.assertRaisesRegex(
+                    ValueError, "method can't contain control characters"):
+                conn = client.HTTPConnection('example.com')
+                conn.sock = FakeSocket(None)
+                conn.request(method=method, url="/")
+
+
+class TransferEncodingTest(TestCase):
+    expected_body = b"It's just a flesh wound"
+
+    def test_endheaders_chunked(self):
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket(b'')
+        conn.putrequest('POST', '/')
+        conn.endheaders(self._make_body(), encode_chunked=True)
+
+        _, _, body = self._parse_request(conn.sock.data)
+        body = self._parse_chunked(body)
+        self.assertEqual(body, self.expected_body)
+
+    def test_explicit_headers(self):
+        # explicit chunked
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket(b'')
+        # this shouldn't actually be automatically chunk-encoded because the
+        # calling code has explicitly stated that it's taking care of it
+        conn.request(
+            'POST', '/', self._make_body(), {'Transfer-Encoding': 'chunked'})
+
+        _, headers, body = self._parse_request(conn.sock.data)
+        self.assertNotIn('content-length', [k.lower() for k in headers.keys()])
+        self.assertEqual(headers['Transfer-Encoding'], 'chunked')
+        self.assertEqual(body, self.expected_body)
+
+        # explicit chunked, string body
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket(b'')
+        conn.request(
+            'POST', '/', self.expected_body.decode('latin-1'),
+            {'Transfer-Encoding': 'chunked'})
+
+        _, headers, body = self._parse_request(conn.sock.data)
+        self.assertNotIn('content-length', [k.lower() for k in headers.keys()])
+        self.assertEqual(headers['Transfer-Encoding'], 'chunked')
+        self.assertEqual(body, self.expected_body)
+
+        # User-specified TE, but request() does the chunk encoding
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket(b'')
+        conn.request('POST', '/',
+            headers={'Transfer-Encoding': 'gzip, chunked'},
+            encode_chunked=True,
+            body=self._make_body())
+        _, headers, body = self._parse_request(conn.sock.data)
+        self.assertNotIn('content-length', [k.lower() for k in headers])
+        self.assertEqual(headers['Transfer-Encoding'], 'gzip, chunked')
+        self.assertEqual(self._parse_chunked(body), self.expected_body)
+
+    def test_request(self):
+        for empty_lines in (False, True,):
+            conn = client.HTTPConnection('example.com')
+            conn.sock = FakeSocket(b'')
+            conn.request(
+                'POST', '/', self._make_body(empty_lines=empty_lines))
+
+            _, headers, body = self._parse_request(conn.sock.data)
+            body = self._parse_chunked(body)
+            self.assertEqual(body, self.expected_body)
+            self.assertEqual(headers['Transfer-Encoding'], 'chunked')
+
+            # Content-Length and Transfer-Encoding SHOULD not be sent in the
+            # same request
+            self.assertNotIn('content-length', [k.lower() for k in headers])
+
+    def test_empty_body(self):
+        # Zero-length iterable should be treated like any other iterable
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket(b'')
+        conn.request('POST', '/', ())
+        _, headers, body = self._parse_request(conn.sock.data)
+        self.assertEqual(headers['Transfer-Encoding'], 'chunked')
+        self.assertNotIn('content-length', [k.lower() for k in headers])
+        self.assertEqual(body, b"0\r\n\r\n")
+
+    def _make_body(self, empty_lines=False):
+        lines = self.expected_body.split(b' ')
+        for idx, line in enumerate(lines):
+            # for testing handling empty lines
+            if empty_lines and idx % 2:
+                yield b''
+            if idx < len(lines) - 1:
+                yield line + b' '
+            else:
+                yield line
+
+    def _parse_request(self, data):
+        lines = data.split(b'\r\n')
+        request = lines[0]
+        headers = {}
+        n = 1
+        while n < len(lines) and len(lines[n]) > 0:
+            key, val = lines[n].split(b':')
+            key = key.decode('latin-1').strip()
+            headers[key] = val.decode('latin-1').strip()
+            n += 1
+
+        return request, headers, b'\r\n'.join(lines[n + 1:])
+
+    def _parse_chunked(self, data):
+        body = []
+        trailers = {}
+        n = 0
+        lines = data.split(b'\r\n')
+        # parse body
+        while True:
+            size, chunk = lines[n:n+2]
+            size = int(size, 16)
+
+            if size == 0:
+                n += 1
+                break
+
+            self.assertEqual(size, len(chunk))
+            body.append(chunk)
+
+            n += 2
+            # we /should/ hit the end chunk, but check against the size of
+            # lines so we're not stuck in an infinite loop should we get
+            # malformed data
+            if n > len(lines):
+                break
+
+        return b''.join(body)
+
+
+class BasicTest(TestCase):
+    def test_dir_with_added_behavior_on_status(self):
+        # see issue40084
+        self.assertTrue({'description', 'name', 'phrase', 'value'} <= set(dir(HTTPStatus(404))))
+
+    def test_simple_httpstatus(self):
+        class CheckedHTTPStatus(enum.IntEnum):
+            """HTTP status codes and reason phrases
+
+            Status codes from the following RFCs are all observed:
+
+                * RFC 7231: Hypertext Transfer Protocol (HTTP/1.1), obsoletes 2616
+                * RFC 6585: Additional HTTP Status Codes
+                * RFC 3229: Delta encoding in HTTP
+                * RFC 4918: HTTP Extensions for WebDAV, obsoletes 2518
+                * RFC 5842: Binding Extensions to WebDAV
+                * RFC 7238: Permanent Redirect
+                * RFC 2295: Transparent Content Negotiation in HTTP
+                * RFC 2774: An HTTP Extension Framework
+                * RFC 7725: An HTTP Status Code to Report Legal Obstacles
+                * RFC 7540: Hypertext Transfer Protocol Version 2 (HTTP/2)
+                * RFC 2324: Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0)
+                * RFC 8297: An HTTP Status Code for Indicating Hints
+                * RFC 8470: Using Early Data in HTTP
+            """
+            def __new__(cls, value, phrase, description=''):
+                obj = int.__new__(cls, value)
+                obj._value_ = value
+
+                obj.phrase = phrase
+                obj.description = description
+                return obj
+
+            @property
+            def is_informational(self):
+                return 100 <= self <= 199
+
+            @property
+            def is_success(self):
+                return 200 <= self <= 299
+
+            @property
+            def is_redirection(self):
+                return 300 <= self <= 399
+
+            @property
+            def is_client_error(self):
+                return 400 <= self <= 499
+
+            @property
+            def is_server_error(self):
+                return 500 <= self <= 599
+
+            # informational
+            CONTINUE = 100, 'Continue', 'Request received, please continue'
+            SWITCHING_PROTOCOLS = (101, 'Switching Protocols',
+                    'Switching to new protocol; obey Upgrade header')
+            PROCESSING = 102, 'Processing'
+            EARLY_HINTS = 103, 'Early Hints'
+            # success
+            OK = 200, 'OK', 'Request fulfilled, document follows'
+            CREATED = 201, 'Created', 'Document created, URL follows'
+            ACCEPTED = (202, 'Accepted',
+                'Request accepted, processing continues off-line')
+            NON_AUTHORITATIVE_INFORMATION = (203,
+                'Non-Authoritative Information', 'Request fulfilled from cache')
+            NO_CONTENT = 204, 'No Content', 'Request fulfilled, nothing follows'
+            RESET_CONTENT = 205, 'Reset Content', 'Clear input form for further input'
+            PARTIAL_CONTENT = 206, 'Partial Content', 'Partial content follows'
+            MULTI_STATUS = 207, 'Multi-Status'
+            ALREADY_REPORTED = 208, 'Already Reported'
+            IM_USED = 226, 'IM Used'
+            # redirection
+            MULTIPLE_CHOICES = (300, 'Multiple Choices',
+                'Object has several resources -- see URI list')
+            MOVED_PERMANENTLY = (301, 'Moved Permanently',
+                'Object moved permanently -- see URI list')
+            FOUND = 302, 'Found', 'Object moved temporarily -- see URI list'
+            SEE_OTHER = 303, 'See Other', 'Object moved -- see Method and URL list'
+            NOT_MODIFIED = (304, 'Not Modified',
+                'Document has not changed since given time')
+            USE_PROXY = (305, 'Use Proxy',
+                'You must use proxy specified in Location to access this resource')
+            TEMPORARY_REDIRECT = (307, 'Temporary Redirect',
+                'Object moved temporarily -- see URI list')
+            PERMANENT_REDIRECT = (308, 'Permanent Redirect',
+                'Object moved permanently -- see URI list')
+            # client error
+            BAD_REQUEST = (400, 'Bad Request',
+                'Bad request syntax or unsupported method')
+            UNAUTHORIZED = (401, 'Unauthorized',
+                'No permission -- see authorization schemes')
+            PAYMENT_REQUIRED = (402, 'Payment Required',
+                'No payment -- see charging schemes')
+            FORBIDDEN = (403, 'Forbidden',
+                'Request forbidden -- authorization will not help')
+            NOT_FOUND = (404, 'Not Found',
+                'Nothing matches the given URI')
+            METHOD_NOT_ALLOWED = (405, 'Method Not Allowed',
+                'Specified method is invalid for this resource')
+            NOT_ACCEPTABLE = (406, 'Not Acceptable',
+                'URI not available in preferred format')
+            PROXY_AUTHENTICATION_REQUIRED = (407,
+                'Proxy Authentication Required',
+                'You must authenticate with this proxy before proceeding')
+            REQUEST_TIMEOUT = (408, 'Request Timeout',
+                'Request timed out; try again later')
+            CONFLICT = 409, 'Conflict', 'Request conflict'
+            GONE = (410, 'Gone',
+                'URI no longer exists and has been permanently removed')
+            LENGTH_REQUIRED = (411, 'Length Required',
+                'Client must specify Content-Length')
+            PRECONDITION_FAILED = (412, 'Precondition Failed',
+                'Precondition in headers is false')
+            REQUEST_ENTITY_TOO_LARGE = (413, 'Request Entity Too Large',
+                'Entity is too large')
+            REQUEST_URI_TOO_LONG = (414, 'Request-URI Too Long',
+                'URI is too long')
+            UNSUPPORTED_MEDIA_TYPE = (415, 'Unsupported Media Type',
+                'Entity body in unsupported format')
+            REQUESTED_RANGE_NOT_SATISFIABLE = (416,
+                'Requested Range Not Satisfiable',
+                'Cannot satisfy request range')
+            EXPECTATION_FAILED = (417, 'Expectation Failed',
+                'Expect condition could not be satisfied')
+            IM_A_TEAPOT = (418, 'I\'m a Teapot',
+                'Server refuses to brew coffee because it is a teapot.')
+            MISDIRECTED_REQUEST = (421, 'Misdirected Request',
+                'Server is not able to produce a response')
+            UNPROCESSABLE_ENTITY = 422, 'Unprocessable Entity'
+            LOCKED = 423, 'Locked'
+            FAILED_DEPENDENCY = 424, 'Failed Dependency'
+            TOO_EARLY = 425, 'Too Early'
+            UPGRADE_REQUIRED = 426, 'Upgrade Required'
+            PRECONDITION_REQUIRED = (428, 'Precondition Required',
+                'The origin server requires the request to be conditional')
+            TOO_MANY_REQUESTS = (429, 'Too Many Requests',
+                'The user has sent too many requests in '
+                'a given amount of time ("rate limiting")')
+            REQUEST_HEADER_FIELDS_TOO_LARGE = (431,
+                'Request Header Fields Too Large',
+                'The server is unwilling to process the request because its header '
+                'fields are too large')
+            UNAVAILABLE_FOR_LEGAL_REASONS = (451,
+                'Unavailable For Legal Reasons',
+                'The server is denying access to the '
+                'resource as a consequence of a legal demand')
+            # server errors
+            INTERNAL_SERVER_ERROR = (500, 'Internal Server Error',
+                'Server got itself in trouble')
+            NOT_IMPLEMENTED = (501, 'Not Implemented',
+                'Server does not support this operation')
+            BAD_GATEWAY = (502, 'Bad Gateway',
+                'Invalid responses from another server/proxy')
+            SERVICE_UNAVAILABLE = (503, 'Service Unavailable',
+                'The server cannot process the request due to a high load')
+            GATEWAY_TIMEOUT = (504, 'Gateway Timeout',
+                'The gateway server did not receive a timely response')
+            HTTP_VERSION_NOT_SUPPORTED = (505, 'HTTP Version Not Supported',
+                'Cannot fulfill request')
+            VARIANT_ALSO_NEGOTIATES = 506, 'Variant Also Negotiates'
+            INSUFFICIENT_STORAGE = 507, 'Insufficient Storage'
+            LOOP_DETECTED = 508, 'Loop Detected'
+            NOT_EXTENDED = 510, 'Not Extended'
+            NETWORK_AUTHENTICATION_REQUIRED = (511,
+                'Network Authentication Required',
+                'The client needs to authenticate to gain network access')
+        enum._test_simple_enum(CheckedHTTPStatus, HTTPStatus)
+
+    def test_httpstatus_range(self):
+        """Checks that the statuses are in the 100-599 range"""
+
+        for member in HTTPStatus.__members__.values():
+            self.assertGreaterEqual(member, 100)
+            self.assertLessEqual(member, 599)
+
+    def test_httpstatus_category(self):
+        """Checks that the statuses belong to the standard categories"""
+
+        categories = (
+            ((100, 199), "is_informational"),
+            ((200, 299), "is_success"),
+            ((300, 399), "is_redirection"),
+            ((400, 499), "is_client_error"),
+            ((500, 599), "is_server_error"),
+        )
+        for member in HTTPStatus.__members__.values():
+            for (lower, upper), category in categories:
+                category_indicator = getattr(member, category)
+                if lower <= member <= upper:
+                    self.assertTrue(category_indicator)
+                else:
+                    self.assertFalse(category_indicator)
+
+    def test_status_lines(self):
+        # Test HTTP status lines
+
+        body = "HTTP/1.1 200 Ok\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.read(0), b'')  # Issue #20007
+        self.assertFalse(resp.isclosed())
+        self.assertFalse(resp.closed)
+        self.assertEqual(resp.read(), b"Text")
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+        body = "HTTP/1.1 400.100 Not Ok\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        self.assertRaises(client.BadStatusLine, resp.begin)
+
+    def test_bad_status_repr(self):
+        exc = client.BadStatusLine('')
+        self.assertEqual(repr(exc), '''BadStatusLine("''")''')
+
+    def test_partial_reads(self):
+        # if we have Content-Length, HTTPResponse knows when to close itself,
+        # the same behaviour as when we read the whole thing with read()
+        body = "HTTP/1.1 200 Ok\r\nContent-Length: 4\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.read(2), b'Te')
+        self.assertFalse(resp.isclosed())
+        self.assertEqual(resp.read(2), b'xt')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_mixed_reads(self):
+        # readline() should update the remaining length, so that read() knows
+        # how much data is left and does not raise IncompleteRead
+        body = "HTTP/1.1 200 Ok\r\nContent-Length: 13\r\n\r\nText\r\nAnother"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.readline(), b'Text\r\n')
+        self.assertFalse(resp.isclosed())
+        self.assertEqual(resp.read(), b'Another')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_partial_readintos(self):
+        # if we have Content-Length, HTTPResponse knows when to close itself,
+        # the same behaviour as when we read the whole thing with read()
+        body = "HTTP/1.1 200 Ok\r\nContent-Length: 4\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        b = bytearray(2)
+        n = resp.readinto(b)
+        self.assertEqual(n, 2)
+        self.assertEqual(bytes(b), b'Te')
+        self.assertFalse(resp.isclosed())
+        n = resp.readinto(b)
+        self.assertEqual(n, 2)
+        self.assertEqual(bytes(b), b'xt')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_partial_reads_past_end(self):
+        # if we have Content-Length, clip reads to the end
+        body = "HTTP/1.1 200 Ok\r\nContent-Length: 4\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.read(10), b'Text')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_partial_readintos_past_end(self):
+        # if we have Content-Length, clip readintos to the end
+        body = "HTTP/1.1 200 Ok\r\nContent-Length: 4\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        b = bytearray(10)
+        n = resp.readinto(b)
+        self.assertEqual(n, 4)
+        self.assertEqual(bytes(b)[:4], b'Text')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_partial_reads_no_content_length(self):
+        # when no length is present, the socket should be gracefully closed when
+        # all data was read
+        body = "HTTP/1.1 200 Ok\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.read(2), b'Te')
+        self.assertFalse(resp.isclosed())
+        self.assertEqual(resp.read(2), b'xt')
+        self.assertEqual(resp.read(1), b'')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_partial_readintos_no_content_length(self):
+        # when no length is present, the socket should be gracefully closed when
+        # all data was read
+        body = "HTTP/1.1 200 Ok\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        b = bytearray(2)
+        n = resp.readinto(b)
+        self.assertEqual(n, 2)
+        self.assertEqual(bytes(b), b'Te')
+        self.assertFalse(resp.isclosed())
+        n = resp.readinto(b)
+        self.assertEqual(n, 2)
+        self.assertEqual(bytes(b), b'xt')
+        n = resp.readinto(b)
+        self.assertEqual(n, 0)
+        self.assertTrue(resp.isclosed())
+
+    def test_partial_reads_incomplete_body(self):
+        # if the server shuts down the connection before the whole
+        # content-length is delivered, the socket is gracefully closed
+        body = "HTTP/1.1 200 Ok\r\nContent-Length: 10\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.read(2), b'Te')
+        self.assertFalse(resp.isclosed())
+        self.assertEqual(resp.read(2), b'xt')
+        self.assertEqual(resp.read(1), b'')
+        self.assertTrue(resp.isclosed())
+
+    def test_partial_readintos_incomplete_body(self):
+        # if the server shuts down the connection before the whole
+        # content-length is delivered, the socket is gracefully closed
+        body = "HTTP/1.1 200 Ok\r\nContent-Length: 10\r\n\r\nText"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        b = bytearray(2)
+        n = resp.readinto(b)
+        self.assertEqual(n, 2)
+        self.assertEqual(bytes(b), b'Te')
+        self.assertFalse(resp.isclosed())
+        n = resp.readinto(b)
+        self.assertEqual(n, 2)
+        self.assertEqual(bytes(b), b'xt')
+        n = resp.readinto(b)
+        self.assertEqual(n, 0)
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_host_port(self):
+        # Check invalid host_port
+
+        for hp in ("www.python.org:abc", "user:password@www.python.org"):
+            self.assertRaises(client.InvalidURL, client.HTTPConnection, hp)
+
+        for hp, h, p in (("[fe80::207:e9ff:fe9b]:8000",
+                          "fe80::207:e9ff:fe9b", 8000),
+                         ("www.python.org:80", "www.python.org", 80),
+                         ("www.python.org:", "www.python.org", 80),
+                         ("www.python.org", "www.python.org", 80),
+                         ("[fe80::207:e9ff:fe9b]", "fe80::207:e9ff:fe9b", 80),
+                         ("[fe80::207:e9ff:fe9b]:", "fe80::207:e9ff:fe9b", 80)):
+            c = client.HTTPConnection(hp)
+            self.assertEqual(h, c.host)
+            self.assertEqual(p, c.port)
+
+    def test_response_headers(self):
+        # test response with multiple message headers with the same field name.
+        text = ('HTTP/1.1 200 OK\r\n'
+                'Set-Cookie: Customer="WILE_E_COYOTE"; '
+                'Version="1"; Path="/acme"\r\n'
+                'Set-Cookie: Part_Number="Rocket_Launcher_0001"; Version="1";'
+                ' Path="/acme"\r\n'
+                '\r\n'
+                'No body\r\n')
+        hdr = ('Customer="WILE_E_COYOTE"; Version="1"; Path="/acme"'
+               ', '
+               'Part_Number="Rocket_Launcher_0001"; Version="1"; Path="/acme"')
+        s = FakeSocket(text)
+        r = client.HTTPResponse(s)
+        r.begin()
+        cookies = r.getheader("Set-Cookie")
+        self.assertEqual(cookies, hdr)
+
+    def test_read_head(self):
+        # Test that the library doesn't attempt to read any data
+        # from a HEAD request.  (Tickles SF bug #622042.)
+        sock = FakeSocket(
+            'HTTP/1.1 200 OK\r\n'
+            'Content-Length: 14432\r\n'
+            '\r\n',
+            NoEOFBytesIO)
+        resp = client.HTTPResponse(sock, method="HEAD")
+        resp.begin()
+        if resp.read():
+            self.fail("Did not expect response from HEAD request")
+
+    def test_readinto_head(self):
+        # Test that the library doesn't attempt to read any data
+        # from a HEAD request.  (Tickles SF bug #622042.)
+        sock = FakeSocket(
+            'HTTP/1.1 200 OK\r\n'
+            'Content-Length: 14432\r\n'
+            '\r\n',
+            NoEOFBytesIO)
+        resp = client.HTTPResponse(sock, method="HEAD")
+        resp.begin()
+        b = bytearray(5)
+        if resp.readinto(b) != 0:
+            self.fail("Did not expect response from HEAD request")
+        self.assertEqual(bytes(b), b'\x00'*5)
+
+    def test_too_many_headers(self):
+        headers = '\r\n'.join('Header%d: foo' % i
+                              for i in range(client._MAXHEADERS + 1)) + '\r\n'
+        text = ('HTTP/1.1 200 OK\r\n' + headers)
+        s = FakeSocket(text)
+        r = client.HTTPResponse(s)
+        self.assertRaisesRegex(client.HTTPException,
+                               r"got more than \d+ headers", r.begin)
+
+    def test_send_file(self):
+        expected = (b'GET /foo HTTP/1.1\r\nHost: example.com\r\n'
+                    b'Accept-Encoding: identity\r\n'
+                    b'Transfer-Encoding: chunked\r\n'
+                    b'\r\n')
+
+        with open(__file__, 'rb') as body:
+            conn = client.HTTPConnection('example.com')
+            sock = FakeSocket(body)
+            conn.sock = sock
+            conn.request('GET', '/foo', body)
+            self.assertTrue(sock.data.startswith(expected), '%r != %r' %
+                    (sock.data[:len(expected)], expected))
+
+    def test_send(self):
+        expected = b'this is a test this is only a test'
+        conn = client.HTTPConnection('example.com')
+        sock = FakeSocket(None)
+        conn.sock = sock
+        conn.send(expected)
+        self.assertEqual(expected, sock.data)
+        sock.data = b''
+        conn.send(array.array('b', expected))
+        self.assertEqual(expected, sock.data)
+        sock.data = b''
+        conn.send(io.BytesIO(expected))
+        self.assertEqual(expected, sock.data)
+
+    def test_send_updating_file(self):
+        def data():
+            yield 'data'
+            yield None
+            yield 'data_two'
+
+        class UpdatingFile(io.TextIOBase):
+            mode = 'r'
+            d = data()
+            def read(self, blocksize=-1):
+                return next(self.d)
+
+        expected = b'data'
+
+        conn = client.HTTPConnection('example.com')
+        sock = FakeSocket("")
+        conn.sock = sock
+        conn.send(UpdatingFile())
+        self.assertEqual(sock.data, expected)
+
+
+    def test_send_iter(self):
+        expected = b'GET /foo HTTP/1.1\r\nHost: example.com\r\n' \
+                   b'Accept-Encoding: identity\r\nContent-Length: 11\r\n' \
+                   b'\r\nonetwothree'
+
+        def body():
+            yield b"one"
+            yield b"two"
+            yield b"three"
+
+        conn = client.HTTPConnection('example.com')
+        sock = FakeSocket("")
+        conn.sock = sock
+        conn.request('GET', '/foo', body(), {'Content-Length': '11'})
+        self.assertEqual(sock.data, expected)
+
+    def test_blocksize_request(self):
+        """Check that request() respects the configured block size."""
+        blocksize = 8  # For easy debugging.
+        conn = client.HTTPConnection('example.com', blocksize=blocksize)
+        sock = FakeSocket(None)
+        conn.sock = sock
+        expected = b"a" * blocksize + b"b"
+        conn.request("PUT", "/", io.BytesIO(expected), {"Content-Length": "9"})
+        self.assertEqual(sock.sendall_calls, 3)
+        body = sock.data.split(b"\r\n\r\n", 1)[1]
+        self.assertEqual(body, expected)
+
+    def test_blocksize_send(self):
+        """Check that send() respects the configured block size."""
+        blocksize = 8  # For easy debugging.
+        conn = client.HTTPConnection('example.com', blocksize=blocksize)
+        sock = FakeSocket(None)
+        conn.sock = sock
+        expected = b"a" * blocksize + b"b"
+        conn.send(io.BytesIO(expected))
+        self.assertEqual(sock.sendall_calls, 2)
+        self.assertEqual(sock.data, expected)
+
+    def test_send_type_error(self):
+        # See: Issue #12676
+        conn = client.HTTPConnection('example.com')
+        conn.sock = FakeSocket('')
+        with self.assertRaises(TypeError):
+            conn.request('POST', 'test', conn)
+
+    def test_chunked(self):
+        expected = chunked_expected
+        sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read(), expected)
+        resp.close()
+
+        # Various read sizes
+        for n in range(1, 12):
+            sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+            resp = client.HTTPResponse(sock, method="GET")
+            resp.begin()
+            self.assertEqual(resp.read(n) + resp.read(n) + resp.read(), expected)
+            resp.close()
+
+        for x in ('', 'foo\r\n'):
+            sock = FakeSocket(chunked_start + x)
+            resp = client.HTTPResponse(sock, method="GET")
+            resp.begin()
+            try:
+                resp.read()
+            except client.IncompleteRead as i:
+                self.assertEqual(i.partial, expected)
+                expected_message = 'IncompleteRead(%d bytes read)' % len(expected)
+                self.assertEqual(repr(i), expected_message)
+                self.assertEqual(str(i), expected_message)
+            else:
+                self.fail('IncompleteRead expected')
+            finally:
+                resp.close()
+
+    def test_readinto_chunked(self):
+
+        expected = chunked_expected
+        nexpected = len(expected)
+        b = bytearray(128)
+
+        sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        n = resp.readinto(b)
+        self.assertEqual(b[:nexpected], expected)
+        self.assertEqual(n, nexpected)
+        resp.close()
+
+        # Various read sizes
+        for n in range(1, 12):
+            sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+            resp = client.HTTPResponse(sock, method="GET")
+            resp.begin()
+            m = memoryview(b)
+            i = resp.readinto(m[0:n])
+            i += resp.readinto(m[i:n + i])
+            i += resp.readinto(m[i:])
+            self.assertEqual(b[:nexpected], expected)
+            self.assertEqual(i, nexpected)
+            resp.close()
+
+        for x in ('', 'foo\r\n'):
+            sock = FakeSocket(chunked_start + x)
+            resp = client.HTTPResponse(sock, method="GET")
+            resp.begin()
+            try:
+                n = resp.readinto(b)
+            except client.IncompleteRead as i:
+                self.assertEqual(i.partial, expected)
+                expected_message = 'IncompleteRead(%d bytes read)' % len(expected)
+                self.assertEqual(repr(i), expected_message)
+                self.assertEqual(str(i), expected_message)
+            else:
+                self.fail('IncompleteRead expected')
+            finally:
+                resp.close()
+
+    def test_chunked_head(self):
+        chunked_start = (
+            'HTTP/1.1 200 OK\r\n'
+            'Transfer-Encoding: chunked\r\n\r\n'
+            'a\r\n'
+            'hello world\r\n'
+            '1\r\n'
+            'd\r\n'
+        )
+        sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+        resp = client.HTTPResponse(sock, method="HEAD")
+        resp.begin()
+        self.assertEqual(resp.read(), b'')
+        self.assertEqual(resp.status, 200)
+        self.assertEqual(resp.reason, 'OK')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_readinto_chunked_head(self):
+        chunked_start = (
+            'HTTP/1.1 200 OK\r\n'
+            'Transfer-Encoding: chunked\r\n\r\n'
+            'a\r\n'
+            'hello world\r\n'
+            '1\r\n'
+            'd\r\n'
+        )
+        sock = FakeSocket(chunked_start + last_chunk + chunked_end)
+        resp = client.HTTPResponse(sock, method="HEAD")
+        resp.begin()
+        b = bytearray(5)
+        n = resp.readinto(b)
+        self.assertEqual(n, 0)
+        self.assertEqual(bytes(b), b'\x00'*5)
+        self.assertEqual(resp.status, 200)
+        self.assertEqual(resp.reason, 'OK')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_negative_content_length(self):
+        sock = FakeSocket(
+            'HTTP/1.1 200 OK\r\nContent-Length: -1\r\n\r\nHello\r\n')
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read(), b'Hello\r\n')
+        self.assertTrue(resp.isclosed())
+
+    def test_incomplete_read(self):
+        sock = FakeSocket('HTTP/1.1 200 OK\r\nContent-Length: 10\r\n\r\nHello\r\n')
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        try:
+            resp.read()
+        except client.IncompleteRead as i:
+            self.assertEqual(i.partial, b'Hello\r\n')
+            self.assertEqual(repr(i),
+                             "IncompleteRead(7 bytes read, 3 more expected)")
+            self.assertEqual(str(i),
+                             "IncompleteRead(7 bytes read, 3 more expected)")
+            self.assertTrue(resp.isclosed())
+        else:
+            self.fail('IncompleteRead expected')
+
+    def test_epipe(self):
+        sock = EPipeSocket(
+            "HTTP/1.0 401 Authorization Required\r\n"
+            "Content-type: text/html\r\n"
+            "WWW-Authenticate: Basic realm=\"example\"\r\n",
+            b"Content-Length")
+        conn = client.HTTPConnection("example.com")
+        conn.sock = sock
+        self.assertRaises(OSError,
+                          lambda: conn.request("PUT", "/url", "body"))
+        resp = conn.getresponse()
+        self.assertEqual(401, resp.status)
+        self.assertEqual("Basic realm=\"example\"",
+                         resp.getheader("www-authenticate"))
+
+    # Test lines overflowing the max line size (_MAXLINE in http.client)
+
+    def test_overflowing_status_line(self):
+        body = "HTTP/1.1 200 Ok" + "k" * 65536 + "\r\n"
+        resp = client.HTTPResponse(FakeSocket(body))
+        self.assertRaises((client.LineTooLong, client.BadStatusLine), resp.begin)
+
+    def test_overflowing_header_line(self):
+        body = (
+            'HTTP/1.1 200 OK\r\n'
+            'X-Foo: bar' + 'r' * 65536 + '\r\n\r\n'
+        )
+        resp = client.HTTPResponse(FakeSocket(body))
+        self.assertRaises(client.LineTooLong, resp.begin)
+
+    def test_overflowing_header_limit_after_100(self):
+        body = (
+            'HTTP/1.1 100 OK\r\n'
+            'r\n' * 32768
+        )
+        resp = client.HTTPResponse(FakeSocket(body))
+        with self.assertRaises(client.HTTPException) as cm:
+            resp.begin()
+        # We must assert more because other reasonable errors that we
+        # do not want can also be HTTPException derived.
+        self.assertIn('got more than ', str(cm.exception))
+        self.assertIn('headers', str(cm.exception))
+
+    def test_overflowing_chunked_line(self):
+        body = (
+            'HTTP/1.1 200 OK\r\n'
+            'Transfer-Encoding: chunked\r\n\r\n'
+            + '0' * 65536 + 'a\r\n'
+            'hello world\r\n'
+            '0\r\n'
+            '\r\n'
+        )
+        resp = client.HTTPResponse(FakeSocket(body))
+        resp.begin()
+        self.assertRaises(client.LineTooLong, resp.read)
+
+    def test_early_eof(self):
+        # Test httpresponse with no \r\n termination,
+        body = "HTTP/1.1 200 Ok"
+        sock = FakeSocket(body)
+        resp = client.HTTPResponse(sock)
+        resp.begin()
+        self.assertEqual(resp.read(), b'')
+        self.assertTrue(resp.isclosed())
+        self.assertFalse(resp.closed)
+        resp.close()
+        self.assertTrue(resp.closed)
+
+    def test_error_leak(self):
+        # Test that the socket is not leaked if getresponse() fails
+        conn = client.HTTPConnection('example.com')
+        response = None
+        class Response(client.HTTPResponse):
+            def __init__(self, *pos, **kw):
+                nonlocal response
+                response = self  # Avoid garbage collector closing the socket
+                client.HTTPResponse.__init__(self, *pos, **kw)
+        conn.response_class = Response
+        conn.sock = FakeSocket('Invalid status line')
+        conn.request('GET', '/')
+        self.assertRaises(client.BadStatusLine, conn.getresponse)
+        self.assertTrue(response.closed)
+        self.assertTrue(conn.sock.file_closed)
+
+    def test_chunked_extension(self):
+        extra = '3;foo=bar\r\n' + 'abc\r\n'
+        expected = chunked_expected + b'abc'
+
+        sock = FakeSocket(chunked_start + extra + last_chunk_extended + chunked_end)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read(), expected)
+        resp.close()
+
+    def test_chunked_missing_end(self):
+        """some servers may serve up a short chunked encoding stream"""
+        expected = chunked_expected
+        sock = FakeSocket(chunked_start + last_chunk)  #no terminating crlf
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read(), expected)
+        resp.close()
+
+    def test_chunked_trailers(self):
+        """See that trailers are read and ignored"""
+        expected = chunked_expected
+        sock = FakeSocket(chunked_start + last_chunk + trailers + chunked_end)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read(), expected)
+        # we should have reached the end of the file
+        self.assertEqual(sock.file.read(), b"") #we read to the end
+        resp.close()
+
+    def test_chunked_sync(self):
+        """Check that we don't read past the end of the chunked-encoding stream"""
+        expected = chunked_expected
+        extradata = "extradata"
+        sock = FakeSocket(chunked_start + last_chunk + trailers + chunked_end + extradata)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read(), expected)
+        # the file should now have our extradata ready to be read
+        self.assertEqual(sock.file.read(), extradata.encode("ascii")) #we read to the end
+        resp.close()
+
+    def test_content_length_sync(self):
+        """Check that we don't read past the end of the Content-Length stream"""
+        extradata = b"extradata"
+        expected = b"Hello123\r\n"
+        sock = FakeSocket(b'HTTP/1.1 200 OK\r\nContent-Length: 10\r\n\r\n' + expected + extradata)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read(), expected)
+        # the file should now have our extradata ready to be read
+        self.assertEqual(sock.file.read(), extradata) #we read to the end
+        resp.close()
+
+    def test_readlines_content_length(self):
+        extradata = b"extradata"
+        expected = b"Hello123\r\n"
+        sock = FakeSocket(b'HTTP/1.1 200 OK\r\nContent-Length: 10\r\n\r\n' + expected + extradata)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.readlines(2000), [expected])
+        # the file should now have our extradata ready to be read
+        self.assertEqual(sock.file.read(), extradata) #we read to the end
+        resp.close()
+
+    def test_read1_content_length(self):
+        extradata = b"extradata"
+        expected = b"Hello123\r\n"
+        sock = FakeSocket(b'HTTP/1.1 200 OK\r\nContent-Length: 10\r\n\r\n' + expected + extradata)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read1(2000), expected)
+        # the file should now have our extradata ready to be read
+        self.assertEqual(sock.file.read(), extradata) #we read to the end
+        resp.close()
+
+    def test_readline_bound_content_length(self):
+        extradata = b"extradata"
+        expected = b"Hello123\r\n"
+        sock = FakeSocket(b'HTTP/1.1 200 OK\r\nContent-Length: 10\r\n\r\n' + expected + extradata)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.readline(10), expected)
+        self.assertEqual(resp.readline(10), b"")
+        # the file should now have our extradata ready to be read
+        self.assertEqual(sock.file.read(), extradata) #we read to the end
+        resp.close()
+
+    def test_read1_bound_content_length(self):
+        extradata = b"extradata"
+        expected = b"Hello123\r\n"
+        sock = FakeSocket(b'HTTP/1.1 200 OK\r\nContent-Length: 30\r\n\r\n' + expected*3 + extradata)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        self.assertEqual(resp.read1(20), expected*2)
+        self.assertEqual(resp.read(), expected)
+        # the file should now have our extradata ready to be read
+        self.assertEqual(sock.file.read(), extradata) #we read to the end
+        resp.close()
+
+    def test_response_fileno(self):
+        # Make sure fd returned by fileno is valid.
+        serv = socket.create_server((HOST, 0))
+        self.addCleanup(serv.close)
+
+        result = None
+        def run_server():
+            [conn, address] = serv.accept()
+            with conn, conn.makefile("rb") as reader:
+                # Read the request header until a blank line
+                while True:
+                    line = reader.readline()
+                    if not line.rstrip(b"\r\n"):
+                        break
+                conn.sendall(b"HTTP/1.1 200 Connection established\r\n\r\n")
+                nonlocal result
+                result = reader.read()
+
+        thread = threading.Thread(target=run_server)
+        thread.start()
+        self.addCleanup(thread.join, float(1))
+        conn = client.HTTPConnection(*serv.getsockname())
+        conn.request("CONNECT", "dummy:1234")
+        response = conn.getresponse()
+        try:
+            self.assertEqual(response.status, client.OK)
+            s = socket.socket(fileno=response.fileno())
+            try:
+                s.sendall(b"proxied data\n")
+            finally:
+                s.detach()
+        finally:
+            response.close()
+            conn.close()
+        thread.join()
+        self.assertEqual(result, b"proxied data\n")
+
+    def test_putrequest_override_domain_validation(self):
+        """
+        It should be possible to override the default validation
+        behavior in putrequest (bpo-38216).
+        """
+        class UnsafeHTTPConnection(client.HTTPConnection):
+            def _validate_path(self, url):
+                pass
+
+        conn = UnsafeHTTPConnection('example.com')
+        conn.sock = FakeSocket('')
+        conn.putrequest('GET', '/\x00')
+
+    def test_putrequest_override_host_validation(self):
+        class UnsafeHTTPConnection(client.HTTPConnection):
+            def _validate_host(self, url):
+                pass
+
+        conn = UnsafeHTTPConnection('example.com\r\n')
+        conn.sock = FakeSocket('')
+        # set skip_host so a ValueError is not raised upon adding the
+        # invalid URL as the value of the "Host:" header
+        conn.putrequest('GET', '/', skip_host=1)
+
+    def test_putrequest_override_encoding(self):
+        """
+        It should be possible to override the default encoding
+        to transmit bytes in another encoding even if invalid
+        (bpo-36274).
+        """
+        class UnsafeHTTPConnection(client.HTTPConnection):
+            def _encode_request(self, str_url):
+                return str_url.encode('utf-8')
+
+        conn = UnsafeHTTPConnection('example.com')
+        conn.sock = FakeSocket('')
+        conn.putrequest('GET', '/☃')
+
+
+class ExtendedReadTest(TestCase):
+    """
+    Test peek(), read1(), readline()
+    """
+    lines = (
+        'HTTP/1.1 200 OK\r\n'
+        '\r\n'
+        'hello world!\n'
+        'and now \n'
+        'for something completely different\n'
+        'foo'
+        )
+    lines_expected = lines[lines.find('hello'):].encode("ascii")
+    lines_chunked = (
+        'HTTP/1.1 200 OK\r\n'
+        'Transfer-Encoding: chunked\r\n\r\n'
+        'a\r\n'
+        'hello worl\r\n'
+        '3\r\n'
+        'd!\n\r\n'
+        '9\r\n'
+        'and now \n\r\n'
+        '23\r\n'
+        'for something completely different\n\r\n'
+        '3\r\n'
+        'foo\r\n'
+        '0\r\n' # terminating chunk
+        '\r\n'  # end of trailers
+    )
+
+    def setUp(self):
+        sock = FakeSocket(self.lines)
+        resp = client.HTTPResponse(sock, method="GET")
+        resp.begin()
+        resp.fp = io.BufferedReader(resp.fp)
+        self.resp = resp
+
+
+
+    def test_peek(self):
+        resp = self.resp
+        # patch up the buffered peek so that it returns not too much stuff
+        oldpeek = resp.fp.peek
+        def mypeek(n=-1):
+            p = oldpeek(n)
+            if n >= 0:
+                return p[:n]
+            return p[:10]
+        resp.fp.peek = mypeek
+
+        all = []
+        while True:
+            # try a short peek
+            p = resp.peek(3)
+            if p:
+                self.assertGreater(len(p), 0)
+                # then unbounded peek
+                p2 = resp.peek()
+                self.assertGreaterEqual(len(p2), len(p))
+                self.assertTrue(p2.startswith(p))
+                next = resp.read(len(p2))
+                self.assertEqual(next, p2)
+            else:
+                next = resp.read()
+                self.assertFalse(next)
+            all.append(next)
+            if not next:
+                break
+        self.assertEqual(b"".join(all), self.lines_expected)
+
+    def test_readline(self):
+        resp = self.resp
+        self._verify_readline(self.resp.readline, self.lines_expected)
+
+    def _verify_readline(self, readline, expected):
+        all = []
+        while True:
+            # short readlines
+            line = readline(5)
+            if line and line != b"foo":
+                if len(line) < 5:
+                    self.assertTrue(line.endswith(b"\n"))
+            all.append(line)
+            if not line:
+                break
+        self.assertEqual(b"".join(all), expected)
+
+    def test_read1(self):
+        resp = self.resp
+        def r():
+            res = resp.read1(4)
+            self.assertLessEqual(len(res), 4)
+            return res
+        readliner = Readliner(r)
+        self._verify_readline(readliner.readline, self.lines_expected)
+
+    def test_read1_unbounded(self):
+        resp = self.resp
+        all = []
+        while True:
+            data = resp.read1()
+            if not data:
+                break
+            all.append(data)
+        self.assertEqual(b"".join(all), self.lines_expected)
+
+    def test_read1_bounded(self):
+        resp = self.resp
+        all = []
+        while True:
+            data = resp.read1(10)
+            if not data:
+                break
+            self.assertLessEqual(len(data), 10)
+            all.append(data)
+        self.assertEqual(b"".join(all), self.lines_expected)
+
+    def test_read1_0(self):
+        self.assertEqual(self.resp.read1(0), b"")
+
+    def test_peek_0(self):
+        p = self.resp.peek(0)
+        self.assertLessEqual(0, len(p))
+
+
+class ExtendedReadTestChunked(ExtendedReadTest):
+    """
+    Test peek(), read1(), readline() in chunked mode
+    """
+    lines = (
+        'HTTP/1.1 200 OK\r\n'
+        'Transfer-Encoding: chunked\r\n\r\n'
+        'a\r\n'
+        'hello worl\r\n'
+        '3\r\n'
+        'd!\n\r\n'
+        '9\r\n'
+        'and now \n\r\n'
+        '23\r\n'
+        'for something completely different\n\r\n'
+        '3\r\n'
+        'foo\r\n'
+        '0\r\n' # terminating chunk
+        '\r\n'  # end of trailers
+    )
+
+
+class Readliner:
+    """
+    a simple readline class that uses an arbitrary read function and buffering
+    """
+    def __init__(self, readfunc):
+        self.readfunc = readfunc
+        self.remainder = b""
+
+    def readline(self, limit):
+        data = []
+        datalen = 0
+        read = self.remainder
+        try:
+            while True:
+                idx = read.find(b'\n')
+                if idx != -1:
+                    break
+                if datalen + len(read) >= limit:
+                    idx = limit - datalen - 1
+                # read more data
+                data.append(read)
+                read = self.readfunc()
+                if not read:
+                    idx = 0 #eof condition
+                    break
+            idx += 1
+            data.append(read[:idx])
+            self.remainder = read[idx:]
+            return b"".join(data)
+        except:
+            self.remainder = b"".join(data)
+            raise
+
+
+class OfflineTest(TestCase):
+    def test_all(self):
+        # Documented objects defined in the module should be in __all__
+        expected = {"responses"}  # Allowlist documented dict() object
+        # HTTPMessage, parse_headers(), and the HTTP status code constants are
+        # intentionally omitted for simplicity
+        denylist = {"HTTPMessage", "parse_headers"}
+        for name in dir(client):
+            if name.startswith("_") or name in denylist:
+                continue
+            module_object = getattr(client, name)
+            if getattr(module_object, "__module__", None) == "http.client":
+                expected.add(name)
+        self.assertCountEqual(client.__all__, expected)
+
+    def test_responses(self):
+        self.assertEqual(client.responses[client.NOT_FOUND], "Not Found")
+
+    def test_client_constants(self):
+        # Make sure we don't break backward compatibility with 3.4
+        expected = [
+            'CONTINUE',
+            'SWITCHING_PROTOCOLS',
+            'PROCESSING',
+            'OK',
+            'CREATED',
+            'ACCEPTED',
+            'NON_AUTHORITATIVE_INFORMATION',
+            'NO_CONTENT',
+            'RESET_CONTENT',
+            'PARTIAL_CONTENT',
+            'MULTI_STATUS',
+            'IM_USED',
+            'MULTIPLE_CHOICES',
+            'MOVED_PERMANENTLY',
+            'FOUND',
+            'SEE_OTHER',
+            'NOT_MODIFIED',
+            'USE_PROXY',
+            'TEMPORARY_REDIRECT',
+            'BAD_REQUEST',
+            'UNAUTHORIZED',
+            'PAYMENT_REQUIRED',
+            'FORBIDDEN',
+            'NOT_FOUND',
+            'METHOD_NOT_ALLOWED',
+            'NOT_ACCEPTABLE',
+            'PROXY_AUTHENTICATION_REQUIRED',
+            'REQUEST_TIMEOUT',
+            'CONFLICT',
+            'GONE',
+            'LENGTH_REQUIRED',
+            'PRECONDITION_FAILED',
+            'REQUEST_ENTITY_TOO_LARGE',
+            'REQUEST_URI_TOO_LONG',
+            'UNSUPPORTED_MEDIA_TYPE',
+            'REQUESTED_RANGE_NOT_SATISFIABLE',
+            'EXPECTATION_FAILED',
+            'IM_A_TEAPOT',
+            'MISDIRECTED_REQUEST',
+            'UNPROCESSABLE_ENTITY',
+            'LOCKED',
+            'FAILED_DEPENDENCY',
+            'UPGRADE_REQUIRED',
+            'PRECONDITION_REQUIRED',
+            'TOO_MANY_REQUESTS',
+            'REQUEST_HEADER_FIELDS_TOO_LARGE',
+            'UNAVAILABLE_FOR_LEGAL_REASONS',
+            'INTERNAL_SERVER_ERROR',
+            'NOT_IMPLEMENTED',
+            'BAD_GATEWAY',
+            'SERVICE_UNAVAILABLE',
+            'GATEWAY_TIMEOUT',
+            'HTTP_VERSION_NOT_SUPPORTED',
+            'INSUFFICIENT_STORAGE',
+            'NOT_EXTENDED',
+            'NETWORK_AUTHENTICATION_REQUIRED',
+            'EARLY_HINTS',
+            'TOO_EARLY'
+        ]
+        for const in expected:
+            with self.subTest(constant=const):
+                self.assertTrue(hasattr(client, const))
+
+
+class SourceAddressTest(TestCase):
+    def setUp(self):
+        self.serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.port = socket_helper.bind_port(self.serv)
+        self.source_port = socket_helper.find_unused_port()
+        self.serv.listen()
+        self.conn = None
+
+    def tearDown(self):
+        if self.conn:
+            self.conn.close()
+            self.conn = None
+        self.serv.close()
+        self.serv = None
+
+    def testHTTPConnectionSourceAddress(self):
+        self.conn = client.HTTPConnection(HOST, self.port,
+                source_address=('', self.source_port))
+        self.conn.connect()
+        self.assertEqual(self.conn.sock.getsockname()[1], self.source_port)
+
+    @unittest.skipIf(not hasattr(client, 'HTTPSConnection'),
+                     'http.client.HTTPSConnection not defined')
+    def testHTTPSConnectionSourceAddress(self):
+        self.conn = client.HTTPSConnection(HOST, self.port,
+                source_address=('', self.source_port))
+        # We don't test anything here other than the constructor not barfing as
+        # this code doesn't deal with setting up an active running SSL server
+        # for an ssl_wrapped connect() to actually return from.
+
+
+class TimeoutTest(TestCase):
+    PORT = None
+
+    def setUp(self):
+        self.serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        TimeoutTest.PORT = socket_helper.bind_port(self.serv)
+        self.serv.listen()
+
+    def tearDown(self):
+        self.serv.close()
+        self.serv = None
+
+    def testTimeoutAttribute(self):
+        # This will prove that the timeout gets through HTTPConnection
+        # and into the socket.
+
+        # default -- use global socket timeout
+        self.assertIsNone(socket.getdefaulttimeout())
+        socket.setdefaulttimeout(30)
+        try:
+            httpConn = client.HTTPConnection(HOST, TimeoutTest.PORT)
+            httpConn.connect()
+        finally:
+            socket.setdefaulttimeout(None)
+        self.assertEqual(httpConn.sock.gettimeout(), 30)
+        httpConn.close()
+
+        # no timeout -- do not use global socket default
+        self.assertIsNone(socket.getdefaulttimeout())
+        socket.setdefaulttimeout(30)
+        try:
+            httpConn = client.HTTPConnection(HOST, TimeoutTest.PORT,
+                                              timeout=None)
+            httpConn.connect()
+        finally:
+            socket.setdefaulttimeout(None)
+        self.assertEqual(httpConn.sock.gettimeout(), None)
+        httpConn.close()
+
+        # a value
+        httpConn = client.HTTPConnection(HOST, TimeoutTest.PORT, timeout=30)
+        httpConn.connect()
+        self.assertEqual(httpConn.sock.gettimeout(), 30)
+        httpConn.close()
+
+
+class PersistenceTest(TestCase):
+
+    def test_reuse_reconnect(self):
+        # Should reuse or reconnect depending on header from server
+        tests = (
+            ('1.0', '', False),
+            ('1.0', 'Connection: keep-alive\r\n', True),
+            ('1.1', '', True),
+            ('1.1', 'Connection: close\r\n', False),
+            ('1.0', 'Connection: keep-ALIVE\r\n', True),
+            ('1.1', 'Connection: cloSE\r\n', False),
+        )
+        for version, header, reuse in tests:
+            with self.subTest(version=version, header=header):
+                msg = (
+                    'HTTP/{} 200 OK\r\n'
+                    '{}'
+                    'Content-Length: 12\r\n'
+                    '\r\n'
+                    'Dummy body\r\n'
+                ).format(version, header)
+                conn = FakeSocketHTTPConnection(msg)
+                self.assertIsNone(conn.sock)
+                conn.request('GET', '/open-connection')
+                with conn.getresponse() as response:
+                    self.assertEqual(conn.sock is None, not reuse)
+                    response.read()
+                self.assertEqual(conn.sock is None, not reuse)
+                self.assertEqual(conn.connections, 1)
+                conn.request('GET', '/subsequent-request')
+                self.assertEqual(conn.connections, 1 if reuse else 2)
+
+    def test_disconnected(self):
+
+        def make_reset_reader(text):
+            """Return BufferedReader that raises ECONNRESET at EOF"""
+            stream = io.BytesIO(text)
+            def readinto(buffer):
+                size = io.BytesIO.readinto(stream, buffer)
+                if size == 0:
+                    raise ConnectionResetError()
+                return size
+            stream.readinto = readinto
+            return io.BufferedReader(stream)
+
+        tests = (
+            (io.BytesIO, client.RemoteDisconnected),
+            (make_reset_reader, ConnectionResetError),
+        )
+        for stream_factory, exception in tests:
+            with self.subTest(exception=exception):
+                conn = FakeSocketHTTPConnection(b'', stream_factory)
+                conn.request('GET', '/eof-response')
+                self.assertRaises(exception, conn.getresponse)
+                self.assertIsNone(conn.sock)
+                # HTTPConnection.connect() should be automatically invoked
+                conn.request('GET', '/reconnect')
+                self.assertEqual(conn.connections, 2)
+
+    def test_100_close(self):
+        conn = FakeSocketHTTPConnection(
+            b'HTTP/1.1 100 Continue\r\n'
+            b'\r\n'
+            # Missing final response
+        )
+        conn.request('GET', '/', headers={'Expect': '100-continue'})
+        self.assertRaises(client.RemoteDisconnected, conn.getresponse)
+        self.assertIsNone(conn.sock)
+        conn.request('GET', '/reconnect')
+        self.assertEqual(conn.connections, 2)
+
+
+class HTTPSTest(TestCase):
+
+    def setUp(self):
+        if not hasattr(client, 'HTTPSConnection'):
+            self.skipTest('ssl support required')
+
+    def make_server(self, certfile):
+        from test.ssl_servers import make_https_server
+        return make_https_server(self, certfile=certfile)
+
+    def test_attributes(self):
+        # simple test to check it's storing the timeout
+        h = client.HTTPSConnection(HOST, TimeoutTest.PORT, timeout=30)
+        self.assertEqual(h.timeout, 30)
+
+    def test_networked(self):
+        # Default settings: requires a valid cert from a trusted CA
+        import ssl
+        support.requires('network')
+        with socket_helper.transient_internet('self-signed.pythontest.net'):
+            h = client.HTTPSConnection('self-signed.pythontest.net', 443)
+            with self.assertRaises(ssl.SSLError) as exc_info:
+                h.request('GET', '/')
+            self.assertEqual(exc_info.exception.reason, 'CERTIFICATE_VERIFY_FAILED')
+
+    def test_networked_noverification(self):
+        # Switch off cert verification
+        import ssl
+        support.requires('network')
+        with socket_helper.transient_internet('self-signed.pythontest.net'):
+            context = ssl._create_unverified_context()
+            h = client.HTTPSConnection('self-signed.pythontest.net', 443,
+                                       context=context)
+            h.request('GET', '/')
+            resp = h.getresponse()
+            h.close()
+            self.assertIn('nginx', resp.getheader('server'))
+            resp.close()
+
+    @support.system_must_validate_cert
+    def test_networked_trusted_by_default_cert(self):
+        # Default settings: requires a valid cert from a trusted CA
+        support.requires('network')
+        with socket_helper.transient_internet('www.python.org'):
+            h = client.HTTPSConnection('www.python.org', 443)
+            h.request('GET', '/')
+            resp = h.getresponse()
+            content_type = resp.getheader('content-type')
+            resp.close()
+            h.close()
+            self.assertIn('text/html', content_type)
+
+    def test_networked_good_cert(self):
+        # We feed the server's cert as a validating cert
+        import ssl
+        support.requires('network')
+        selfsigned_pythontestdotnet = 'self-signed.pythontest.net'
+        with socket_helper.transient_internet(selfsigned_pythontestdotnet):
+            context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+            self.assertEqual(context.verify_mode, ssl.CERT_REQUIRED)
+            self.assertEqual(context.check_hostname, True)
+            context.load_verify_locations(CERT_selfsigned_pythontestdotnet)
+            try:
+                h = client.HTTPSConnection(selfsigned_pythontestdotnet, 443,
+                                           context=context)
+                h.request('GET', '/')
+                resp = h.getresponse()
+            except ssl.SSLError as ssl_err:
+                ssl_err_str = str(ssl_err)
+                # In the error message of [SSL: CERTIFICATE_VERIFY_FAILED] on
+                # modern Linux distros (Debian Buster, etc) default OpenSSL
+                # configurations it'll fail saying "key too weak" until we
+                # address https://bugs.python.org/issue36816 to use a proper
+                # key size on self-signed.pythontest.net.
+                if re.search(r'(?i)key.too.weak', ssl_err_str):
+                    raise unittest.SkipTest(
+                        f'Got {ssl_err_str} trying to connect '
+                        f'to {selfsigned_pythontestdotnet}. '
+                        'See https://bugs.python.org/issue36816.')
+                raise
+            server_string = resp.getheader('server')
+            resp.close()
+            h.close()
+            self.assertIn('nginx', server_string)
+
+    def test_networked_bad_cert(self):
+        # We feed a "CA" cert that is unrelated to the server's cert
+        import ssl
+        support.requires('network')
+        with socket_helper.transient_internet('self-signed.pythontest.net'):
+            context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+            context.load_verify_locations(CERT_localhost)
+            h = client.HTTPSConnection('self-signed.pythontest.net', 443, context=context)
+            with self.assertRaises(ssl.SSLError) as exc_info:
+                h.request('GET', '/')
+            self.assertEqual(exc_info.exception.reason, 'CERTIFICATE_VERIFY_FAILED')
+
+    def test_local_unknown_cert(self):
+        # The custom cert isn't known to the default trust bundle
+        import ssl
+        server = self.make_server(CERT_localhost)
+        h = client.HTTPSConnection('localhost', server.port)
+        with self.assertRaises(ssl.SSLError) as exc_info:
+            h.request('GET', '/')
+        self.assertEqual(exc_info.exception.reason, 'CERTIFICATE_VERIFY_FAILED')
+
+    def test_local_good_hostname(self):
+        # The (valid) cert validates the HTTPS hostname
+        import ssl
+        server = self.make_server(CERT_localhost)
+        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+        context.load_verify_locations(CERT_localhost)
+        h = client.HTTPSConnection('localhost', server.port, context=context)
+        self.addCleanup(h.close)
+        h.request('GET', '/nonexistent')
+        resp = h.getresponse()
+        self.addCleanup(resp.close)
+        self.assertEqual(resp.status, 404)
+
+    def test_local_bad_hostname(self):
+        # The (valid) cert doesn't validate the HTTPS hostname
+        import ssl
+        server = self.make_server(CERT_fakehostname)
+        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+        context.load_verify_locations(CERT_fakehostname)
+        h = client.HTTPSConnection('localhost', server.port, context=context)
+        with self.assertRaises(ssl.CertificateError):
+            h.request('GET', '/')
+
+        # Same with explicit context.check_hostname=True
+        context.check_hostname = True
+        h = client.HTTPSConnection('localhost', server.port, context=context)
+        with self.assertRaises(ssl.CertificateError):
+            h.request('GET', '/')
+
+        # With context.check_hostname=False, the mismatching is ignored
+        context.check_hostname = False
+        h = client.HTTPSConnection('localhost', server.port, context=context)
+        h.request('GET', '/nonexistent')
+        resp = h.getresponse()
+        resp.close()
+        h.close()
+        self.assertEqual(resp.status, 404)
+
+    @unittest.skipIf(not hasattr(client, 'HTTPSConnection'),
+                     'http.client.HTTPSConnection not available')
+    def test_host_port(self):
+        # Check invalid host_port
+
+        for hp in ("www.python.org:abc", "user:password@www.python.org"):
+            self.assertRaises(client.InvalidURL, client.HTTPSConnection, hp)
+
+        for hp, h, p in (("[fe80::207:e9ff:fe9b]:8000",
+                          "fe80::207:e9ff:fe9b", 8000),
+                         ("www.python.org:443", "www.python.org", 443),
+                         ("www.python.org:", "www.python.org", 443),
+                         ("www.python.org", "www.python.org", 443),
+                         ("[fe80::207:e9ff:fe9b]", "fe80::207:e9ff:fe9b", 443),
+                         ("[fe80::207:e9ff:fe9b]:", "fe80::207:e9ff:fe9b",
+                             443)):
+            c = client.HTTPSConnection(hp)
+            self.assertEqual(h, c.host)
+            self.assertEqual(p, c.port)
+
+    def test_tls13_pha(self):
+        import ssl
+        if not ssl.HAS_TLSv1_3:
+            self.skipTest('TLS 1.3 support required')
+        # just check status of PHA flag
+        h = client.HTTPSConnection('localhost', 443)
+        self.assertTrue(h._context.post_handshake_auth)
+
+        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+        self.assertFalse(context.post_handshake_auth)
+        h = client.HTTPSConnection('localhost', 443, context=context)
+        self.assertIs(h._context, context)
+        self.assertFalse(h._context.post_handshake_auth)
+
+        context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT, cert_file=CERT_localhost)
+        context.post_handshake_auth = True
+        h = client.HTTPSConnection('localhost', 443, context=context)
+        self.assertTrue(h._context.post_handshake_auth)
+
+
+class RequestBodyTest(TestCase):
+    """Test cases where a request includes a message body."""
+
+    def setUp(self):
+        self.conn = client.HTTPConnection('example.com')
+        self.conn.sock = self.sock = FakeSocket("")
+        self.conn.sock = self.sock
+
+    def get_headers_and_fp(self):
+        f = io.BytesIO(self.sock.data)
+        f.readline()  # read the request line
+        message = client.parse_headers(f)
+        return message, f
+
+    def test_list_body(self):
+        # Note that no content-length is automatically calculated for
+        # an iterable.  The request will fall back to send chunked
+        # transfer encoding.
+        cases = (
+            ([b'foo', b'bar'], b'3\r\nfoo\r\n3\r\nbar\r\n0\r\n\r\n'),
+            ((b'foo', b'bar'), b'3\r\nfoo\r\n3\r\nbar\r\n0\r\n\r\n'),
+        )
+        for body, expected in cases:
+            with self.subTest(body):
+                self.conn = client.HTTPConnection('example.com')
+                self.conn.sock = self.sock = FakeSocket('')
+
+                self.conn.request('PUT', '/url', body)
+                msg, f = self.get_headers_and_fp()
+                self.assertNotIn('Content-Type', msg)
+                self.assertNotIn('Content-Length', msg)
+                self.assertEqual(msg.get('Transfer-Encoding'), 'chunked')
+                self.assertEqual(expected, f.read())
+
+    def test_manual_content_length(self):
+        # Set an incorrect content-length so that we can verify that
+        # it will not be over-ridden by the library.
+        self.conn.request("PUT", "/url", "body",
+                          {"Content-Length": "42"})
+        message, f = self.get_headers_and_fp()
+        self.assertEqual("42", message.get("content-length"))
+        self.assertEqual(4, len(f.read()))
+
+    def test_ascii_body(self):
+        self.conn.request("PUT", "/url", "body")
+        message, f = self.get_headers_and_fp()
+        self.assertEqual("text/plain", message.get_content_type())
+        self.assertIsNone(message.get_charset())
+        self.assertEqual("4", message.get("content-length"))
+        self.assertEqual(b'body', f.read())
+
+    def test_latin1_body(self):
+        self.conn.request("PUT", "/url", "body\xc1")
+        message, f = self.get_headers_and_fp()
+        self.assertEqual("text/plain", message.get_content_type())
+        self.assertIsNone(message.get_charset())
+        self.assertEqual("5", message.get("content-length"))
+        self.assertEqual(b'body\xc1', f.read())
+
+    def test_bytes_body(self):
+        self.conn.request("PUT", "/url", b"body\xc1")
+        message, f = self.get_headers_and_fp()
+        self.assertEqual("text/plain", message.get_content_type())
+        self.assertIsNone(message.get_charset())
+        self.assertEqual("5", message.get("content-length"))
+        self.assertEqual(b'body\xc1', f.read())
+
+    def test_text_file_body(self):
+        self.addCleanup(os_helper.unlink, os_helper.TESTFN)
+        with open(os_helper.TESTFN, "w", encoding="utf-8") as f:
+            f.write("body")
+        with open(os_helper.TESTFN, encoding="utf-8") as f:
+            self.conn.request("PUT", "/url", f)
+            message, f = self.get_headers_and_fp()
+            self.assertEqual("text/plain", message.get_content_type())
+            self.assertIsNone(message.get_charset())
+            # No content-length will be determined for files; the body
+            # will be sent using chunked transfer encoding instead.
+            self.assertIsNone(message.get("content-length"))
+            self.assertEqual("chunked", message.get("transfer-encoding"))
+            self.assertEqual(b'4\r\nbody\r\n0\r\n\r\n', f.read())
+
+    def test_binary_file_body(self):
+        self.addCleanup(os_helper.unlink, os_helper.TESTFN)
+        with open(os_helper.TESTFN, "wb") as f:
+            f.write(b"body\xc1")
+        with open(os_helper.TESTFN, "rb") as f:
+            self.conn.request("PUT", "/url", f)
+            message, f = self.get_headers_and_fp()
+            self.assertEqual("text/plain", message.get_content_type())
+            self.assertIsNone(message.get_charset())
+            self.assertEqual("chunked", message.get("Transfer-Encoding"))
+            self.assertNotIn("Content-Length", message)
+            self.assertEqual(b'5\r\nbody\xc1\r\n0\r\n\r\n', f.read())
+
+
+class HTTPResponseTest(TestCase):
+
+    def setUp(self):
+        body = "HTTP/1.1 200 Ok\r\nMy-Header: first-value\r\nMy-Header: \
+                second-value\r\n\r\nText"
+        sock = FakeSocket(body)
+        self.resp = client.HTTPResponse(sock)
+        self.resp.begin()
+
+    def test_getting_header(self):
+        header = self.resp.getheader('My-Header')
+        self.assertEqual(header, 'first-value, second-value')
+
+        header = self.resp.getheader('My-Header', 'some default')
+        self.assertEqual(header, 'first-value, second-value')
+
+    def test_getting_nonexistent_header_with_string_default(self):
+        header = self.resp.getheader('No-Such-Header', 'default-value')
+        self.assertEqual(header, 'default-value')
+
+    def test_getting_nonexistent_header_with_iterable_default(self):
+        header = self.resp.getheader('No-Such-Header', ['default', 'values'])
+        self.assertEqual(header, 'default, values')
+
+        header = self.resp.getheader('No-Such-Header', ('default', 'values'))
+        self.assertEqual(header, 'default, values')
+
+    def test_getting_nonexistent_header_without_default(self):
+        header = self.resp.getheader('No-Such-Header')
+        self.assertEqual(header, None)
+
+    def test_getting_header_defaultint(self):
+        header = self.resp.getheader('No-Such-Header',default=42)
+        self.assertEqual(header, 42)
+
+class TunnelTests(TestCase):
+    def setUp(self):
+        response_text = (
+            'HTTP/1.1 200 OK\r\n\r\n' # Reply to CONNECT
+            'HTTP/1.1 200 OK\r\n' # Reply to HEAD
+            'Content-Length: 42\r\n\r\n'
+        )
+        self.host = 'proxy.com'
+        self.port = client.HTTP_PORT
+        self.conn = client.HTTPConnection(self.host)
+        self.conn._create_connection = self._create_connection(response_text)
+
+    def tearDown(self):
+        self.conn.close()
+
+    def _create_connection(self, response_text):
+        def create_connection(address, timeout=None, source_address=None):
+            return FakeSocket(response_text, host=address[0], port=address[1])
+        return create_connection
+
+    def test_set_tunnel_host_port_headers_add_host_missing(self):
+        tunnel_host = 'destination.com'
+        tunnel_port = 8888
+        tunnel_headers = {'User-Agent': 'Mozilla/5.0 (compatible, MSIE 11)'}
+        tunnel_headers_after = tunnel_headers.copy()
+        tunnel_headers_after['Host'] = '%s:%d' % (tunnel_host, tunnel_port)
+        self.conn.set_tunnel(tunnel_host, port=tunnel_port,
+                             headers=tunnel_headers)
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertEqual(self.conn._tunnel_host, tunnel_host)
+        self.assertEqual(self.conn._tunnel_port, tunnel_port)
+        self.assertEqual(self.conn._tunnel_headers, tunnel_headers_after)
+
+    def test_set_tunnel_host_port_headers_set_host_identical(self):
+        tunnel_host = 'destination.com'
+        tunnel_port = 8888
+        tunnel_headers = {'User-Agent': 'Mozilla/5.0 (compatible, MSIE 11)',
+                          'Host': '%s:%d' % (tunnel_host, tunnel_port)}
+        self.conn.set_tunnel(tunnel_host, port=tunnel_port,
+                             headers=tunnel_headers)
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertEqual(self.conn._tunnel_host, tunnel_host)
+        self.assertEqual(self.conn._tunnel_port, tunnel_port)
+        self.assertEqual(self.conn._tunnel_headers, tunnel_headers)
+
+    def test_set_tunnel_host_port_headers_set_host_different(self):
+        tunnel_host = 'destination.com'
+        tunnel_port = 8888
+        tunnel_headers = {'User-Agent': 'Mozilla/5.0 (compatible, MSIE 11)',
+                          'Host': '%s:%d' % ('example.com', 4200)}
+        self.conn.set_tunnel(tunnel_host, port=tunnel_port,
+                             headers=tunnel_headers)
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertEqual(self.conn._tunnel_host, tunnel_host)
+        self.assertEqual(self.conn._tunnel_port, tunnel_port)
+        self.assertEqual(self.conn._tunnel_headers, tunnel_headers)
+
+    def test_disallow_set_tunnel_after_connect(self):
+        # Once connected, we shouldn't be able to tunnel anymore
+        self.conn.connect()
+        self.assertRaises(RuntimeError, self.conn.set_tunnel,
+                          'destination.com')
+
+    def test_connect_with_tunnel(self):
+        d = {
+            b'host': b'destination.com',
+            b'port': client.HTTP_PORT,
+        }
+        self.conn.set_tunnel(d[b'host'].decode('ascii'))
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertIn(b'CONNECT %(host)s:%(port)d HTTP/1.1\r\n'
+                      b'Host: %(host)s:%(port)d\r\n\r\n' % d,
+                      self.conn.sock.data)
+        self.assertIn(b'HEAD / HTTP/1.1\r\nHost: %(host)s\r\n' % d,
+                      self.conn.sock.data)
+
+    def test_connect_with_tunnel_with_default_port(self):
+        d = {
+            b'host': b'destination.com',
+            b'port': client.HTTP_PORT,
+        }
+        self.conn.set_tunnel(d[b'host'].decode('ascii'), port=d[b'port'])
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertIn(b'CONNECT %(host)s:%(port)d HTTP/1.1\r\n'
+                      b'Host: %(host)s:%(port)d\r\n\r\n' % d,
+                      self.conn.sock.data)
+        self.assertIn(b'HEAD / HTTP/1.1\r\nHost: %(host)s\r\n' % d,
+                      self.conn.sock.data)
+
+    def test_connect_with_tunnel_with_nonstandard_port(self):
+        d = {
+            b'host': b'destination.com',
+            b'port': 8888,
+        }
+        self.conn.set_tunnel(d[b'host'].decode('ascii'), port=d[b'port'])
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertIn(b'CONNECT %(host)s:%(port)d HTTP/1.1\r\n'
+                      b'Host: %(host)s:%(port)d\r\n\r\n' % d,
+                      self.conn.sock.data)
+        self.assertIn(b'HEAD / HTTP/1.1\r\nHost: %(host)s:%(port)d\r\n' % d,
+                      self.conn.sock.data)
+
+    # This request is not RFC-valid, but it's been possible with the library
+    # for years, so don't break it unexpectedly... This also tests
+    # case-insensitivity when injecting Host: headers if they're missing.
+    def test_connect_with_tunnel_with_different_host_header(self):
+        d = {
+            b'host': b'destination.com',
+            b'tunnel_host_header': b'example.com:9876',
+            b'port': client.HTTP_PORT,
+        }
+        self.conn.set_tunnel(
+            d[b'host'].decode('ascii'),
+            headers={'HOST': d[b'tunnel_host_header'].decode('ascii')})
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertIn(b'CONNECT %(host)s:%(port)d HTTP/1.1\r\n'
+                      b'HOST: %(tunnel_host_header)s\r\n\r\n' % d,
+                      self.conn.sock.data)
+        self.assertIn(b'HEAD / HTTP/1.1\r\nHost: %(host)s\r\n' % d,
+                      self.conn.sock.data)
+
+    def test_connect_with_tunnel_different_host(self):
+        d = {
+            b'host': b'destination.com',
+            b'port': client.HTTP_PORT,
+        }
+        self.conn.set_tunnel(d[b'host'].decode('ascii'))
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertIn(b'CONNECT %(host)s:%(port)d HTTP/1.1\r\n'
+                      b'Host: %(host)s:%(port)d\r\n\r\n' % d,
+                      self.conn.sock.data)
+        self.assertIn(b'HEAD / HTTP/1.1\r\nHost: %(host)s\r\n' % d,
+                      self.conn.sock.data)
+
+    def test_connect_with_tunnel_idna(self):
+        dest = '\u03b4\u03c0\u03b8.gr'
+        dest_port = b'%s:%d' % (dest.encode('idna'), client.HTTP_PORT)
+        expected = b'CONNECT %s HTTP/1.1\r\nHost: %s\r\n\r\n' % (
+            dest_port, dest_port)
+        self.conn.set_tunnel(dest)
+        self.conn.request('HEAD', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, client.HTTP_PORT)
+        self.assertIn(expected, self.conn.sock.data)
+
+    def test_tunnel_connect_single_send_connection_setup(self):
+        """Regresstion test for https://bugs.python.org/issue43332."""
+        with mock.patch.object(self.conn, 'send') as mock_send:
+            self.conn.set_tunnel('destination.com')
+            self.conn.connect()
+            self.conn.request('GET', '/')
+        mock_send.assert_called()
+        # Likely 2, but this test only cares about the first.
+        self.assertGreater(
+                len(mock_send.mock_calls), 1,
+                msg=f'unexpected number of send calls: {mock_send.mock_calls}')
+        proxy_setup_data_sent = mock_send.mock_calls[0][1][0]
+        self.assertIn(b'CONNECT destination.com', proxy_setup_data_sent)
+        self.assertTrue(
+                proxy_setup_data_sent.endswith(b'\r\n\r\n'),
+                msg=f'unexpected proxy data sent {proxy_setup_data_sent!r}')
+
+    def test_connect_put_request(self):
+        d = {
+            b'host': b'destination.com',
+            b'port': client.HTTP_PORT,
+        }
+        self.conn.set_tunnel(d[b'host'].decode('ascii'))
+        self.conn.request('PUT', '/', '')
+        self.assertEqual(self.conn.sock.host, self.host)
+        self.assertEqual(self.conn.sock.port, self.port)
+        self.assertIn(b'CONNECT %(host)s:%(port)d HTTP/1.1\r\n'
+                      b'Host: %(host)s:%(port)d\r\n\r\n' % d,
+                      self.conn.sock.data)
+        self.assertIn(b'PUT / HTTP/1.1\r\nHost: %(host)s\r\n' % d,
+                      self.conn.sock.data)
+
+    def test_tunnel_debuglog(self):
+        expected_header = 'X-Dummy: 1'
+        response_text = 'HTTP/1.0 200 OK\r\n{}\r\n\r\n'.format(expected_header)
+
+        self.conn.set_debuglevel(1)
+        self.conn._create_connection = self._create_connection(response_text)
+        self.conn.set_tunnel('destination.com')
+
+        with support.captured_stdout() as output:
+            self.conn.request('PUT', '/', '')
+        lines = output.getvalue().splitlines()
+        self.assertIn('header: {}'.format(expected_header), lines)
+
+    def test_proxy_response_headers(self):
+        expected_header = ('X-Dummy', '1')
+        response_text = (
+            'HTTP/1.0 200 OK\r\n'
+            '{0}\r\n\r\n'.format(':'.join(expected_header))
+        )
+
+        self.conn._create_connection = self._create_connection(response_text)
+        self.conn.set_tunnel('destination.com')
+
+        self.conn.request('PUT', '/', '')
+        headers = self.conn.get_proxy_response_headers()
+        self.assertIn(expected_header, headers.items())
+
+    def test_tunnel_leak(self):
+        sock = None
+
+        def _create_connection(address, timeout=None, source_address=None):
+            nonlocal sock
+            sock = FakeSocket(
+                'HTTP/1.1 404 NOT FOUND\r\n\r\n',
+                host=address[0],
+                port=address[1],
+            )
+            return sock
+
+        self.conn._create_connection = _create_connection
+        self.conn.set_tunnel('destination.com')
+        exc = None
+        try:
+            self.conn.request('HEAD', '/', '')
+        except OSError as e:
+            # keeping a reference to exc keeps response alive in the traceback
+            exc = e
+        self.assertIsNotNone(exc)
+        self.assertTrue(sock.file_closed)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)

src/greentest/3.12/test_select.py

+import errno
+import select
+import subprocess
+import sys
+import textwrap
+import unittest
+from test import support
+
+support.requires_working_socket(module=True)
+
+@unittest.skipIf((sys.platform[:3]=='win'),
+                 "can't easily test on this system")
+class SelectTestCase(unittest.TestCase):
+
+    class Nope:
+        pass
+
+    class Almost:
+        def fileno(self):
+            return 'fileno'
+
+    def test_error_conditions(self):
+        self.assertRaises(TypeError, select.select, 1, 2, 3)
+        self.assertRaises(TypeError, select.select, [self.Nope()], [], [])
+        self.assertRaises(TypeError, select.select, [self.Almost()], [], [])
+        self.assertRaises(TypeError, select.select, [], [], [], "not a number")
+        self.assertRaises(ValueError, select.select, [], [], [], -1)
+
+    # Issue #12367: http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/155606
+    @unittest.skipIf(sys.platform.startswith('freebsd'),
+                     'skip because of a FreeBSD bug: kern/155606')
+    def test_errno(self):
+        with open(__file__, 'rb') as fp:
+            fd = fp.fileno()
+            fp.close()
+            try:
+                select.select([fd], [], [], 0)
+            except OSError as err:
+                self.assertEqual(err.errno, errno.EBADF)
+            else:
+                self.fail("exception not raised")
+
+    def test_returned_list_identity(self):
+        # See issue #8329
+        r, w, x = select.select([], [], [], 1)
+        self.assertIsNot(r, w)
+        self.assertIsNot(r, x)
+        self.assertIsNot(w, x)
+
+    @support.requires_fork()
+    def test_select(self):
+        code = textwrap.dedent('''
+            import time
+            for i in range(10):
+                print("testing...", flush=True)
+                time.sleep(0.050)
+        ''')
+        cmd = [sys.executable, '-I', '-c', code]
+        with subprocess.Popen(cmd, stdout=subprocess.PIPE) as proc:
+            pipe = proc.stdout
+            for timeout in (0, 1, 2, 4, 8, 16) + (None,)*10:
+                if support.verbose:
+                    print(f'timeout = {timeout}')
+                rfd, wfd, xfd = select.select([pipe], [], [], timeout)
+                self.assertEqual(wfd, [])
+                self.assertEqual(xfd, [])
+                if not rfd:
+                    continue
+                if rfd == [pipe]:
+                    line = pipe.readline()
+                    if support.verbose:
+                        print(repr(line))
+                    if not line:
+                        if support.verbose:
+                            print('EOF')
+                        break
+                    continue
+                self.fail('Unexpected return values from select():',
+                          rfd, wfd, xfd)
+
+    # Issue 16230: Crash on select resized list
+    @unittest.skipIf(
+        support.is_emscripten, "Emscripten cannot select a fd multiple times."
+    )
+    def test_select_mutated(self):
+        a = []
+        class F:
+            def fileno(self):
+                del a[-1]
+                return sys.__stdout__.fileno()
+        a[:] = [F()] * 10
+        self.assertEqual(select.select([], a, []), ([], a[:5], []))
+
+    def test_disallow_instantiation(self):
+        support.check_disallow_instantiation(self, type(select.poll()))
+
+        if hasattr(select, 'devpoll'):
+            support.check_disallow_instantiation(self, type(select.devpoll()))
+
+def tearDownModule():
+    support.reap_children()
+
+if __name__ == "__main__":
+    unittest.main()

src/greentest/3.12/test_selectors.py

+import errno
+import os
+import random
+import selectors
+import signal
+import socket
+import sys
+from test import support
+from test.support import os_helper
+from test.support import socket_helper
+from time import sleep
+import unittest
+import unittest.mock
+import tempfile
+from time import monotonic as time
+try:
+    import resource
+except ImportError:
+    resource = None
+
+
+if support.is_emscripten or support.is_wasi:
+    raise unittest.SkipTest("Cannot create socketpair on Emscripten/WASI.")
+
+
+if hasattr(socket, 'socketpair'):
+    socketpair = socket.socketpair
+else:
+    def socketpair(family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0):
+        with socket.socket(family, type, proto) as l:
+            l.bind((socket_helper.HOST, 0))
+            l.listen()
+            c = socket.socket(family, type, proto)
+            try:
+                c.connect(l.getsockname())
+                caddr = c.getsockname()
+                while True:
+                    a, addr = l.accept()
+                    # check that we've got the correct client
+                    if addr == caddr:
+                        return c, a
+                    a.close()
+            except OSError:
+                c.close()
+                raise
+
+
+def find_ready_matching(ready, flag):
+    match = []
+    for key, events in ready:
+        if events & flag:
+            match.append(key.fileobj)
+    return match
+
+
+class BaseSelectorTestCase:
+
+    def make_socketpair(self):
+        rd, wr = socketpair()
+        self.addCleanup(rd.close)
+        self.addCleanup(wr.close)
+        return rd, wr
+
+    def test_register(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        key = s.register(rd, selectors.EVENT_READ, "data")
+        self.assertIsInstance(key, selectors.SelectorKey)
+        self.assertEqual(key.fileobj, rd)
+        self.assertEqual(key.fd, rd.fileno())
+        self.assertEqual(key.events, selectors.EVENT_READ)
+        self.assertEqual(key.data, "data")
+
+        # register an unknown event
+        self.assertRaises(ValueError, s.register, 0, 999999)
+
+        # register an invalid FD
+        self.assertRaises(ValueError, s.register, -10, selectors.EVENT_READ)
+
+        # register twice
+        self.assertRaises(KeyError, s.register, rd, selectors.EVENT_READ)
+
+        # register the same FD, but with a different object
+        self.assertRaises(KeyError, s.register, rd.fileno(),
+                          selectors.EVENT_READ)
+
+    def test_unregister(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        s.register(rd, selectors.EVENT_READ)
+        s.unregister(rd)
+
+        # unregister an unknown file obj
+        self.assertRaises(KeyError, s.unregister, 999999)
+
+        # unregister twice
+        self.assertRaises(KeyError, s.unregister, rd)
+
+    def test_unregister_after_fd_close(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+        rd, wr = self.make_socketpair()
+        r, w = rd.fileno(), wr.fileno()
+        s.register(r, selectors.EVENT_READ)
+        s.register(w, selectors.EVENT_WRITE)
+        rd.close()
+        wr.close()
+        s.unregister(r)
+        s.unregister(w)
+
+    @unittest.skipUnless(os.name == 'posix', "requires posix")
+    def test_unregister_after_fd_close_and_reuse(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+        rd, wr = self.make_socketpair()
+        r, w = rd.fileno(), wr.fileno()
+        s.register(r, selectors.EVENT_READ)
+        s.register(w, selectors.EVENT_WRITE)
+        rd2, wr2 = self.make_socketpair()
+        rd.close()
+        wr.close()
+        os.dup2(rd2.fileno(), r)
+        os.dup2(wr2.fileno(), w)
+        self.addCleanup(os.close, r)
+        self.addCleanup(os.close, w)
+        s.unregister(r)
+        s.unregister(w)
+
+    def test_unregister_after_socket_close(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+        rd, wr = self.make_socketpair()
+        s.register(rd, selectors.EVENT_READ)
+        s.register(wr, selectors.EVENT_WRITE)
+        rd.close()
+        wr.close()
+        s.unregister(rd)
+        s.unregister(wr)
+
+    def test_modify(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        key = s.register(rd, selectors.EVENT_READ)
+
+        # modify events
+        key2 = s.modify(rd, selectors.EVENT_WRITE)
+        self.assertNotEqual(key.events, key2.events)
+        self.assertEqual(key2, s.get_key(rd))
+
+        s.unregister(rd)
+
+        # modify data
+        d1 = object()
+        d2 = object()
+
+        key = s.register(rd, selectors.EVENT_READ, d1)
+        key2 = s.modify(rd, selectors.EVENT_READ, d2)
+        self.assertEqual(key.events, key2.events)
+        self.assertNotEqual(key.data, key2.data)
+        self.assertEqual(key2, s.get_key(rd))
+        self.assertEqual(key2.data, d2)
+
+        # modify unknown file obj
+        self.assertRaises(KeyError, s.modify, 999999, selectors.EVENT_READ)
+
+        # modify use a shortcut
+        d3 = object()
+        s.register = unittest.mock.Mock()
+        s.unregister = unittest.mock.Mock()
+
+        s.modify(rd, selectors.EVENT_READ, d3)
+        self.assertFalse(s.register.called)
+        self.assertFalse(s.unregister.called)
+
+    def test_modify_unregister(self):
+        # Make sure the fd is unregister()ed in case of error on
+        # modify(): http://bugs.python.org/issue30014
+        if self.SELECTOR.__name__ == 'EpollSelector':
+            patch = unittest.mock.patch(
+                'selectors.EpollSelector._selector_cls')
+        elif self.SELECTOR.__name__ == 'PollSelector':
+            patch = unittest.mock.patch(
+                'selectors.PollSelector._selector_cls')
+        elif self.SELECTOR.__name__ == 'DevpollSelector':
+            patch = unittest.mock.patch(
+                'selectors.DevpollSelector._selector_cls')
+        else:
+            raise self.skipTest("")
+
+        with patch as m:
+            m.return_value.modify = unittest.mock.Mock(
+                side_effect=ZeroDivisionError)
+            s = self.SELECTOR()
+            self.addCleanup(s.close)
+            rd, wr = self.make_socketpair()
+            s.register(rd, selectors.EVENT_READ)
+            self.assertEqual(len(s._map), 1)
+            with self.assertRaises(ZeroDivisionError):
+                s.modify(rd, selectors.EVENT_WRITE)
+            self.assertEqual(len(s._map), 0)
+
+    def test_close(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        mapping = s.get_map()
+        rd, wr = self.make_socketpair()
+
+        s.register(rd, selectors.EVENT_READ)
+        s.register(wr, selectors.EVENT_WRITE)
+
+        s.close()
+        self.assertRaises(RuntimeError, s.get_key, rd)
+        self.assertRaises(RuntimeError, s.get_key, wr)
+        self.assertRaises(KeyError, mapping.__getitem__, rd)
+        self.assertRaises(KeyError, mapping.__getitem__, wr)
+
+    def test_get_key(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        key = s.register(rd, selectors.EVENT_READ, "data")
+        self.assertEqual(key, s.get_key(rd))
+
+        # unknown file obj
+        self.assertRaises(KeyError, s.get_key, 999999)
+
+    def test_get_map(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        keys = s.get_map()
+        self.assertFalse(keys)
+        self.assertEqual(len(keys), 0)
+        self.assertEqual(list(keys), [])
+        key = s.register(rd, selectors.EVENT_READ, "data")
+        self.assertIn(rd, keys)
+        self.assertEqual(key, keys[rd])
+        self.assertEqual(len(keys), 1)
+        self.assertEqual(list(keys), [rd.fileno()])
+        self.assertEqual(list(keys.values()), [key])
+
+        # unknown file obj
+        with self.assertRaises(KeyError):
+            keys[999999]
+
+        # Read-only mapping
+        with self.assertRaises(TypeError):
+            del keys[rd]
+
+    def test_select(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        s.register(rd, selectors.EVENT_READ)
+        wr_key = s.register(wr, selectors.EVENT_WRITE)
+
+        result = s.select()
+        for key, events in result:
+            self.assertTrue(isinstance(key, selectors.SelectorKey))
+            self.assertTrue(events)
+            self.assertFalse(events & ~(selectors.EVENT_READ |
+                                        selectors.EVENT_WRITE))
+
+        self.assertEqual([(wr_key, selectors.EVENT_WRITE)], result)
+
+    def test_context_manager(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        with s as sel:
+            sel.register(rd, selectors.EVENT_READ)
+            sel.register(wr, selectors.EVENT_WRITE)
+
+        self.assertRaises(RuntimeError, s.get_key, rd)
+        self.assertRaises(RuntimeError, s.get_key, wr)
+
+    def test_fileno(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        if hasattr(s, 'fileno'):
+            fd = s.fileno()
+            self.assertTrue(isinstance(fd, int))
+            self.assertGreaterEqual(fd, 0)
+
+    def test_selector(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        NUM_SOCKETS = 12
+        MSG = b" This is a test."
+        MSG_LEN = len(MSG)
+        readers = []
+        writers = []
+        r2w = {}
+        w2r = {}
+
+        for i in range(NUM_SOCKETS):
+            rd, wr = self.make_socketpair()
+            s.register(rd, selectors.EVENT_READ)
+            s.register(wr, selectors.EVENT_WRITE)
+            readers.append(rd)
+            writers.append(wr)
+            r2w[rd] = wr
+            w2r[wr] = rd
+
+        bufs = []
+
+        while writers:
+            ready = s.select()
+            ready_writers = find_ready_matching(ready, selectors.EVENT_WRITE)
+            if not ready_writers:
+                self.fail("no sockets ready for writing")
+            wr = random.choice(ready_writers)
+            wr.send(MSG)
+
+            for i in range(10):
+                ready = s.select()
+                ready_readers = find_ready_matching(ready,
+                                                    selectors.EVENT_READ)
+                if ready_readers:
+                    break
+                # there might be a delay between the write to the write end and
+                # the read end is reported ready
+                sleep(0.1)
+            else:
+                self.fail("no sockets ready for reading")
+            self.assertEqual([w2r[wr]], ready_readers)
+            rd = ready_readers[0]
+            buf = rd.recv(MSG_LEN)
+            self.assertEqual(len(buf), MSG_LEN)
+            bufs.append(buf)
+            s.unregister(r2w[rd])
+            s.unregister(rd)
+            writers.remove(r2w[rd])
+
+        self.assertEqual(bufs, [MSG] * NUM_SOCKETS)
+
+    @unittest.skipIf(sys.platform == 'win32',
+                     'select.select() cannot be used with empty fd sets')
+    def test_empty_select(self):
+        # Issue #23009: Make sure EpollSelector.select() works when no FD is
+        # registered.
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+        self.assertEqual(s.select(timeout=0), [])
+
+    def test_timeout(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        s.register(wr, selectors.EVENT_WRITE)
+        t = time()
+        self.assertEqual(1, len(s.select(0)))
+        self.assertEqual(1, len(s.select(-1)))
+        self.assertLess(time() - t, 0.5)
+
+        s.unregister(wr)
+        s.register(rd, selectors.EVENT_READ)
+        t = time()
+        self.assertFalse(s.select(0))
+        self.assertFalse(s.select(-1))
+        self.assertLess(time() - t, 0.5)
+
+        t0 = time()
+        self.assertFalse(s.select(1))
+        t1 = time()
+        dt = t1 - t0
+        # Tolerate 2.0 seconds for very slow buildbots
+        self.assertTrue(0.8 <= dt <= 2.0, dt)
+
+    @unittest.skipUnless(hasattr(signal, "alarm"),
+                         "signal.alarm() required for this test")
+    def test_select_interrupt_exc(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        class InterruptSelect(Exception):
+            pass
+
+        def handler(*args):
+            raise InterruptSelect
+
+        orig_alrm_handler = signal.signal(signal.SIGALRM, handler)
+        self.addCleanup(signal.signal, signal.SIGALRM, orig_alrm_handler)
+
+        try:
+            signal.alarm(1)
+
+            s.register(rd, selectors.EVENT_READ)
+            t = time()
+            # select() is interrupted by a signal which raises an exception
+            with self.assertRaises(InterruptSelect):
+                s.select(30)
+            # select() was interrupted before the timeout of 30 seconds
+            self.assertLess(time() - t, 5.0)
+        finally:
+            signal.alarm(0)
+
+    @unittest.skipUnless(hasattr(signal, "alarm"),
+                         "signal.alarm() required for this test")
+    def test_select_interrupt_noraise(self):
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        rd, wr = self.make_socketpair()
+
+        orig_alrm_handler = signal.signal(signal.SIGALRM, lambda *args: None)
+        self.addCleanup(signal.signal, signal.SIGALRM, orig_alrm_handler)
+
+        try:
+            signal.alarm(1)
+
+            s.register(rd, selectors.EVENT_READ)
+            t = time()
+            # select() is interrupted by a signal, but the signal handler doesn't
+            # raise an exception, so select() should by retries with a recomputed
+            # timeout
+            self.assertFalse(s.select(1.5))
+            self.assertGreaterEqual(time() - t, 1.0)
+        finally:
+            signal.alarm(0)
+
+
+class ScalableSelectorMixIn:
+
+    # see issue #18963 for why it's skipped on older OS X versions
+    @support.requires_mac_ver(10, 5)
+    @unittest.skipUnless(resource, "Test needs resource module")
+    def test_above_fd_setsize(self):
+        # A scalable implementation should have no problem with more than
+        # FD_SETSIZE file descriptors. Since we don't know the value, we just
+        # try to set the soft RLIMIT_NOFILE to the hard RLIMIT_NOFILE ceiling.
+        soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
+        try:
+            resource.setrlimit(resource.RLIMIT_NOFILE, (hard, hard))
+            self.addCleanup(resource.setrlimit, resource.RLIMIT_NOFILE,
+                            (soft, hard))
+            NUM_FDS = min(hard, 2**16)
+        except (OSError, ValueError):
+            NUM_FDS = soft
+
+        # guard for already allocated FDs (stdin, stdout...)
+        NUM_FDS -= 32
+
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        for i in range(NUM_FDS // 2):
+            try:
+                rd, wr = self.make_socketpair()
+            except OSError:
+                # too many FDs, skip - note that we should only catch EMFILE
+                # here, but apparently *BSD and Solaris can fail upon connect()
+                # or bind() with EADDRNOTAVAIL, so let's be safe
+                self.skipTest("FD limit reached")
+
+            try:
+                s.register(rd, selectors.EVENT_READ)
+                s.register(wr, selectors.EVENT_WRITE)
+            except OSError as e:
+                if e.errno == errno.ENOSPC:
+                    # this can be raised by epoll if we go over
+                    # fs.epoll.max_user_watches sysctl
+                    self.skipTest("FD limit reached")
+                raise
+
+        try:
+            fds = s.select()
+        except OSError as e:
+            if e.errno == errno.EINVAL and sys.platform == 'darwin':
+                # unexplainable errors on macOS don't need to fail the test
+                self.skipTest("Invalid argument error calling poll()")
+            raise
+        self.assertEqual(NUM_FDS // 2, len(fds))
+
+
+class DefaultSelectorTestCase(BaseSelectorTestCase, unittest.TestCase):
+
+    SELECTOR = selectors.DefaultSelector
+
+
+class SelectSelectorTestCase(BaseSelectorTestCase, unittest.TestCase):
+
+    SELECTOR = selectors.SelectSelector
+
+
+@unittest.skipUnless(hasattr(selectors, 'PollSelector'),
+                     "Test needs selectors.PollSelector")
+class PollSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn,
+                           unittest.TestCase):
+
+    SELECTOR = getattr(selectors, 'PollSelector', None)
+
+
+@unittest.skipUnless(hasattr(selectors, 'EpollSelector'),
+                     "Test needs selectors.EpollSelector")
+class EpollSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn,
+                            unittest.TestCase):
+
+    SELECTOR = getattr(selectors, 'EpollSelector', None)
+
+    def test_register_file(self):
+        # epoll(7) returns EPERM when given a file to watch
+        s = self.SELECTOR()
+        with tempfile.NamedTemporaryFile() as f:
+            with self.assertRaises(IOError):
+                s.register(f, selectors.EVENT_READ)
+            # the SelectorKey has been removed
+            with self.assertRaises(KeyError):
+                s.get_key(f)
+
+
+@unittest.skipUnless(hasattr(selectors, 'KqueueSelector'),
+                     "Test needs selectors.KqueueSelector)")
+class KqueueSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn,
+                             unittest.TestCase):
+
+    SELECTOR = getattr(selectors, 'KqueueSelector', None)
+
+    def test_register_bad_fd(self):
+        # a file descriptor that's been closed should raise an OSError
+        # with EBADF
+        s = self.SELECTOR()
+        bad_f = os_helper.make_bad_fd()
+        with self.assertRaises(OSError) as cm:
+            s.register(bad_f, selectors.EVENT_READ)
+        self.assertEqual(cm.exception.errno, errno.EBADF)
+        # the SelectorKey has been removed
+        with self.assertRaises(KeyError):
+            s.get_key(bad_f)
+
+    def test_empty_select_timeout(self):
+        # Issues #23009, #29255: Make sure timeout is applied when no fds
+        # are registered.
+        s = self.SELECTOR()
+        self.addCleanup(s.close)
+
+        t0 = time()
+        self.assertEqual(s.select(1), [])
+        t1 = time()
+        dt = t1 - t0
+        # Tolerate 2.0 seconds for very slow buildbots
+        self.assertTrue(0.8 <= dt <= 2.0, dt)
+
+
+@unittest.skipUnless(hasattr(selectors, 'DevpollSelector'),
+                     "Test needs selectors.DevpollSelector")
+class DevpollSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn,
+                              unittest.TestCase):
+
+    SELECTOR = getattr(selectors, 'DevpollSelector', None)
+
+
+def tearDownModule():
+    support.reap_children()
+
+
+if __name__ == "__main__":
+    unittest.main()

src/greentest/3.12/test_signal.py

+import enum
+import errno
+import inspect
+import os
+import random
+import signal
+import socket
+import statistics
+import subprocess
+import sys
+import threading
+import time
+import unittest
+from test import support
+from test.support import os_helper
+from test.support.script_helper import assert_python_ok, spawn_python
+from test.support import threading_helper
+try:
+    import _testcapi
+except ImportError:
+    _testcapi = None
+
+
+class GenericTests(unittest.TestCase):
+
+    def test_enums(self):
+        for name in dir(signal):
+            sig = getattr(signal, name)
+            if name in {'SIG_DFL', 'SIG_IGN'}:
+                self.assertIsInstance(sig, signal.Handlers)
+            elif name in {'SIG_BLOCK', 'SIG_UNBLOCK', 'SIG_SETMASK'}:
+                self.assertIsInstance(sig, signal.Sigmasks)
+            elif name.startswith('SIG') and not name.startswith('SIG_'):
+                self.assertIsInstance(sig, signal.Signals)
+            elif name.startswith('CTRL_'):
+                self.assertIsInstance(sig, signal.Signals)
+                self.assertEqual(sys.platform, "win32")
+
+        CheckedSignals = enum._old_convert_(
+                enum.IntEnum, 'Signals', 'signal',
+                lambda name:
+                    name.isupper()
+                    and (name.startswith('SIG') and not name.startswith('SIG_'))
+                    or name.startswith('CTRL_'),
+                source=signal,
+                )
+        enum._test_simple_enum(CheckedSignals, signal.Signals)
+
+        CheckedHandlers = enum._old_convert_(
+                enum.IntEnum, 'Handlers', 'signal',
+                lambda name: name in ('SIG_DFL', 'SIG_IGN'),
+                source=signal,
+                )
+        enum._test_simple_enum(CheckedHandlers, signal.Handlers)
+
+        Sigmasks = getattr(signal, 'Sigmasks', None)
+        if Sigmasks is not None:
+            CheckedSigmasks = enum._old_convert_(
+                    enum.IntEnum, 'Sigmasks', 'signal',
+                    lambda name: name in ('SIG_BLOCK', 'SIG_UNBLOCK', 'SIG_SETMASK'),
+                    source=signal,
+                    )
+            enum._test_simple_enum(CheckedSigmasks, Sigmasks)
+
+    def test_functions_module_attr(self):
+        # Issue #27718: If __all__ is not defined all non-builtin functions
+        # should have correct __module__ to be displayed by pydoc.
+        for name in dir(signal):
+            value = getattr(signal, name)
+            if inspect.isroutine(value) and not inspect.isbuiltin(value):
+                self.assertEqual(value.__module__, 'signal')
+
+
+@unittest.skipIf(sys.platform == "win32", "Not valid on Windows")
+class PosixTests(unittest.TestCase):
+    def trivial_signal_handler(self, *args):
+        pass
+
+    def test_out_of_range_signal_number_raises_error(self):
+        self.assertRaises(ValueError, signal.getsignal, 4242)
+
+        self.assertRaises(ValueError, signal.signal, 4242,
+                          self.trivial_signal_handler)
+
+        self.assertRaises(ValueError, signal.strsignal, 4242)
+
+    def test_setting_signal_handler_to_none_raises_error(self):
+        self.assertRaises(TypeError, signal.signal,
+                          signal.SIGUSR1, None)
+
+    def test_getsignal(self):
+        hup = signal.signal(signal.SIGHUP, self.trivial_signal_handler)
+        self.assertIsInstance(hup, signal.Handlers)
+        self.assertEqual(signal.getsignal(signal.SIGHUP),
+                         self.trivial_signal_handler)
+        signal.signal(signal.SIGHUP, hup)
+        self.assertEqual(signal.getsignal(signal.SIGHUP), hup)
+
+    def test_strsignal(self):
+        self.assertIn("Interrupt", signal.strsignal(signal.SIGINT))
+        self.assertIn("Terminated", signal.strsignal(signal.SIGTERM))
+        self.assertIn("Hangup", signal.strsignal(signal.SIGHUP))
+
+    # Issue 3864, unknown if this affects earlier versions of freebsd also
+    def test_interprocess_signal(self):
+        dirname = os.path.dirname(__file__)
+        script = os.path.join(dirname, 'signalinterproctester.py')
+        assert_python_ok(script)
+
+    @unittest.skipUnless(
+        hasattr(signal, "valid_signals"),
+        "requires signal.valid_signals"
+    )
+    def test_valid_signals(self):
+        s = signal.valid_signals()
+        self.assertIsInstance(s, set)
+        self.assertIn(signal.Signals.SIGINT, s)
+        self.assertIn(signal.Signals.SIGALRM, s)
+        self.assertNotIn(0, s)
+        self.assertNotIn(signal.NSIG, s)
+        self.assertLess(len(s), signal.NSIG)
+
+        # gh-91145: Make sure that all SIGxxx constants exposed by the Python
+        # signal module have a number in the [0; signal.NSIG-1] range.
+        for name in dir(signal):
+            if not name.startswith("SIG"):
+                continue
+            if name in {"SIG_IGN", "SIG_DFL"}:
+                # SIG_IGN and SIG_DFL are pointers
+                continue
+            with self.subTest(name=name):
+                signum = getattr(signal, name)
+                self.assertGreaterEqual(signum, 0)
+                self.assertLess(signum, signal.NSIG)
+
+    @unittest.skipUnless(sys.executable, "sys.executable required.")
+    @support.requires_subprocess()
+    def test_keyboard_interrupt_exit_code(self):
+        """KeyboardInterrupt triggers exit via SIGINT."""
+        process = subprocess.run(
+                [sys.executable, "-c",
+                 "import os, signal, time\n"
+                 "os.kill(os.getpid(), signal.SIGINT)\n"
+                 "for _ in range(999): time.sleep(0.01)"],
+                stderr=subprocess.PIPE)
+        self.assertIn(b"KeyboardInterrupt", process.stderr)
+        self.assertEqual(process.returncode, -signal.SIGINT)
+        # Caveat: The exit code is insufficient to guarantee we actually died
+        # via a signal.  POSIX shells do more than look at the 8 bit value.
+        # Writing an automation friendly test of an interactive shell
+        # to confirm that our process died via a SIGINT proved too complex.
+
+
+@unittest.skipUnless(sys.platform == "win32", "Windows specific")
+class WindowsSignalTests(unittest.TestCase):
+
+    def test_valid_signals(self):
+        s = signal.valid_signals()
+        self.assertIsInstance(s, set)
+        self.assertGreaterEqual(len(s), 6)
+        self.assertIn(signal.Signals.SIGINT, s)
+        self.assertNotIn(0, s)
+        self.assertNotIn(signal.NSIG, s)
+        self.assertLess(len(s), signal.NSIG)
+
+    def test_issue9324(self):
+        # Updated for issue #10003, adding SIGBREAK
+        handler = lambda x, y: None
+        checked = set()
+        for sig in (signal.SIGABRT, signal.SIGBREAK, signal.SIGFPE,
+                    signal.SIGILL, signal.SIGINT, signal.SIGSEGV,
+                    signal.SIGTERM):
+            # Set and then reset a handler for signals that work on windows.
+            # Issue #18396, only for signals without a C-level handler.
+            if signal.getsignal(sig) is not None:
+                signal.signal(sig, signal.signal(sig, handler))
+                checked.add(sig)
+        # Issue #18396: Ensure the above loop at least tested *something*
+        self.assertTrue(checked)
+
+        with self.assertRaises(ValueError):
+            signal.signal(-1, handler)
+
+        with self.assertRaises(ValueError):
+            signal.signal(7, handler)
+
+    @unittest.skipUnless(sys.executable, "sys.executable required.")
+    @support.requires_subprocess()
+    def test_keyboard_interrupt_exit_code(self):
+        """KeyboardInterrupt triggers an exit using STATUS_CONTROL_C_EXIT."""
+        # We don't test via os.kill(os.getpid(), signal.CTRL_C_EVENT) here
+        # as that requires setting up a console control handler in a child
+        # in its own process group.  Doable, but quite complicated.  (see
+        # @eryksun on https://github.com/python/cpython/pull/11862)
+        process = subprocess.run(
+                [sys.executable, "-c", "raise KeyboardInterrupt"],
+                stderr=subprocess.PIPE)
+        self.assertIn(b"KeyboardInterrupt", process.stderr)
+        STATUS_CONTROL_C_EXIT = 0xC000013A
+        self.assertEqual(process.returncode, STATUS_CONTROL_C_EXIT)
+
+
+class WakeupFDTests(unittest.TestCase):
+
+    def test_invalid_call(self):
+        # First parameter is positional-only
+        with self.assertRaises(TypeError):
+            signal.set_wakeup_fd(signum=signal.SIGINT)
+
+        # warn_on_full_buffer is a keyword-only parameter
+        with self.assertRaises(TypeError):
+            signal.set_wakeup_fd(signal.SIGINT, False)
+
+    def test_invalid_fd(self):
+        fd = os_helper.make_bad_fd()
+        self.assertRaises((ValueError, OSError),
+                          signal.set_wakeup_fd, fd)
+
+    @unittest.skipUnless(support.has_socket_support, "needs working sockets.")
+    def test_invalid_socket(self):
+        sock = socket.socket()
+        fd = sock.fileno()
+        sock.close()
+        self.assertRaises((ValueError, OSError),
+                          signal.set_wakeup_fd, fd)
+
+    # Emscripten does not support fstat on pipes yet.
+    # https://github.com/emscripten-core/emscripten/issues/16414
+    @unittest.skipIf(support.is_emscripten, "Emscripten cannot fstat pipes.")
+    @unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
+    def test_set_wakeup_fd_result(self):
+        r1, w1 = os.pipe()
+        self.addCleanup(os.close, r1)
+        self.addCleanup(os.close, w1)
+        r2, w2 = os.pipe()
+        self.addCleanup(os.close, r2)
+        self.addCleanup(os.close, w2)
+
+        if hasattr(os, 'set_blocking'):
+            os.set_blocking(w1, False)
+            os.set_blocking(w2, False)
+
+        signal.set_wakeup_fd(w1)
+        self.assertEqual(signal.set_wakeup_fd(w2), w1)
+        self.assertEqual(signal.set_wakeup_fd(-1), w2)
+        self.assertEqual(signal.set_wakeup_fd(-1), -1)
+
+    @unittest.skipIf(support.is_emscripten, "Emscripten cannot fstat pipes.")
+    @unittest.skipUnless(support.has_socket_support, "needs working sockets.")
+    def test_set_wakeup_fd_socket_result(self):
+        sock1 = socket.socket()
+        self.addCleanup(sock1.close)
+        sock1.setblocking(False)
+        fd1 = sock1.fileno()
+
+        sock2 = socket.socket()
+        self.addCleanup(sock2.close)
+        sock2.setblocking(False)
+        fd2 = sock2.fileno()
+
+        signal.set_wakeup_fd(fd1)
+        self.assertEqual(signal.set_wakeup_fd(fd2), fd1)
+        self.assertEqual(signal.set_wakeup_fd(-1), fd2)
+        self.assertEqual(signal.set_wakeup_fd(-1), -1)
+
+    # On Windows, files are always blocking and Windows does not provide a
+    # function to test if a socket is in non-blocking mode.
+    @unittest.skipIf(sys.platform == "win32", "tests specific to POSIX")
+    @unittest.skipIf(support.is_emscripten, "Emscripten cannot fstat pipes.")
+    @unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
+    def test_set_wakeup_fd_blocking(self):
+        rfd, wfd = os.pipe()
+        self.addCleanup(os.close, rfd)
+        self.addCleanup(os.close, wfd)
+
+        # fd must be non-blocking
+        os.set_blocking(wfd, True)
+        with self.assertRaises(ValueError) as cm:
+            signal.set_wakeup_fd(wfd)
+        self.assertEqual(str(cm.exception),
+                         "the fd %s must be in non-blocking mode" % wfd)
+
+        # non-blocking is ok
+        os.set_blocking(wfd, False)
+        signal.set_wakeup_fd(wfd)
+        signal.set_wakeup_fd(-1)
+
+
+@unittest.skipIf(sys.platform == "win32", "Not valid on Windows")
+class WakeupSignalTests(unittest.TestCase):
+    @unittest.skipIf(_testcapi is None, 'need _testcapi')
+    def check_wakeup(self, test_body, *signals, ordered=True):
+        # use a subprocess to have only one thread
+        code = """if 1:
+        import _testcapi
+        import os
+        import signal
+        import struct
+
+        signals = {!r}
+
+        def handler(signum, frame):
+            pass
+
+        def check_signum(signals):
+            data = os.read(read, len(signals)+1)
+            raised = struct.unpack('%uB' % len(data), data)
+            if not {!r}:
+                raised = set(raised)
+                signals = set(signals)
+            if raised != signals:
+                raise Exception("%r != %r" % (raised, signals))
+
+        {}
+
+        signal.signal(signal.SIGALRM, handler)
+        read, write = os.pipe()
+        os.set_blocking(write, False)
+        signal.set_wakeup_fd(write)
+
+        test()
+        check_signum(signals)
+
+        os.close(read)
+        os.close(write)
+        """.format(tuple(map(int, signals)), ordered, test_body)
+
+        assert_python_ok('-c', code)
+
+    @unittest.skipIf(_testcapi is None, 'need _testcapi')
+    @unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
+    def test_wakeup_write_error(self):
+        # Issue #16105: write() errors in the C signal handler should not
+        # pass silently.
+        # Use a subprocess to have only one thread.
+        code = """if 1:
+        import _testcapi
+        import errno
+        import os
+        import signal
+        import sys
+        from test.support import captured_stderr
+
+        def handler(signum, frame):
+            1/0
+
+        signal.signal(signal.SIGALRM, handler)
+        r, w = os.pipe()
+        os.set_blocking(r, False)
+
+        # Set wakeup_fd a read-only file descriptor to trigger the error
+        signal.set_wakeup_fd(r)
+        try:
+            with captured_stderr() as err:
+                signal.raise_signal(signal.SIGALRM)
+        except ZeroDivisionError:
+            # An ignored exception should have been printed out on stderr
+            err = err.getvalue()
+            if ('Exception ignored when trying to write to the signal wakeup fd'
+                not in err):
+                raise AssertionError(err)
+            if ('OSError: [Errno %d]' % errno.EBADF) not in err:
+                raise AssertionError(err)
+        else:
+            raise AssertionError("ZeroDivisionError not raised")
+
+        os.close(r)
+        os.close(w)
+        """
+        r, w = os.pipe()
+        try:
+            os.write(r, b'x')
+        except OSError:
+            pass
+        else:
+            self.skipTest("OS doesn't report write() error on the read end of a pipe")
+        finally:
+            os.close(r)
+            os.close(w)
+
+        assert_python_ok('-c', code)
+
+    def test_wakeup_fd_early(self):
+        self.check_wakeup("""def test():
+            import select
+            import time
+
+            TIMEOUT_FULL = 10
+            TIMEOUT_HALF = 5
+
+            class InterruptSelect(Exception):
+                pass
+
+            def handler(signum, frame):
+                raise InterruptSelect
+            signal.signal(signal.SIGALRM, handler)
+
+            signal.alarm(1)
+
+            # We attempt to get a signal during the sleep,
+            # before select is called
+            try:
+                select.select([], [], [], TIMEOUT_FULL)
+            except InterruptSelect:
+                pass
+            else:
+                raise Exception("select() was not interrupted")
+
+            before_time = time.monotonic()
+            select.select([read], [], [], TIMEOUT_FULL)
+            after_time = time.monotonic()
+            dt = after_time - before_time
+            if dt >= TIMEOUT_HALF:
+                raise Exception("%s >= %s" % (dt, TIMEOUT_HALF))
+        """, signal.SIGALRM)
+
+    def test_wakeup_fd_during(self):
+        self.check_wakeup("""def test():
+            import select
+            import time
+
+            TIMEOUT_FULL = 10
+            TIMEOUT_HALF = 5
+
+            class InterruptSelect(Exception):
+                pass
+
+            def handler(signum, frame):
+                raise InterruptSelect
+            signal.signal(signal.SIGALRM, handler)
+
+            signal.alarm(1)
+            before_time = time.monotonic()
+            # We attempt to get a signal during the select call
+            try:
+                select.select([read], [], [], TIMEOUT_FULL)
+            except InterruptSelect:
+                pass
+            else:
+                raise Exception("select() was not interrupted")
+            after_time = time.monotonic()
+            dt = after_time - before_time
+            if dt >= TIMEOUT_HALF:
+                raise Exception("%s >= %s" % (dt, TIMEOUT_HALF))
+        """, signal.SIGALRM)
+
+    def test_signum(self):
+        self.check_wakeup("""def test():
+            signal.signal(signal.SIGUSR1, handler)
+            signal.raise_signal(signal.SIGUSR1)
+            signal.raise_signal(signal.SIGALRM)
+        """, signal.SIGUSR1, signal.SIGALRM)
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+                         'need signal.pthread_sigmask()')
+    def test_pending(self):
+        self.check_wakeup("""def test():
+            signum1 = signal.SIGUSR1
+            signum2 = signal.SIGUSR2
+
+            signal.signal(signum1, handler)
+            signal.signal(signum2, handler)
+
+            signal.pthread_sigmask(signal.SIG_BLOCK, (signum1, signum2))
+            signal.raise_signal(signum1)
+            signal.raise_signal(signum2)
+            # Unblocking the 2 signals calls the C signal handler twice
+            signal.pthread_sigmask(signal.SIG_UNBLOCK, (signum1, signum2))
+        """,  signal.SIGUSR1, signal.SIGUSR2, ordered=False)
+
+
+@unittest.skipUnless(hasattr(socket, 'socketpair'), 'need socket.socketpair')
+class WakeupSocketSignalTests(unittest.TestCase):
+
+    @unittest.skipIf(_testcapi is None, 'need _testcapi')
+    def test_socket(self):
+        # use a subprocess to have only one thread
+        code = """if 1:
+        import signal
+        import socket
+        import struct
+        import _testcapi
+
+        signum = signal.SIGINT
+        signals = (signum,)
+
+        def handler(signum, frame):
+            pass
+
+        signal.signal(signum, handler)
+
+        read, write = socket.socketpair()
+        write.setblocking(False)
+        signal.set_wakeup_fd(write.fileno())
+
+        signal.raise_signal(signum)
+
+        data = read.recv(1)
+        if not data:
+            raise Exception("no signum written")
+        raised = struct.unpack('B', data)
+        if raised != signals:
+            raise Exception("%r != %r" % (raised, signals))
+
+        read.close()
+        write.close()
+        """
+
+        assert_python_ok('-c', code)
+
+    @unittest.skipIf(_testcapi is None, 'need _testcapi')
+    def test_send_error(self):
+        # Use a subprocess to have only one thread.
+        if os.name == 'nt':
+            action = 'send'
+        else:
+            action = 'write'
+        code = """if 1:
+        import errno
+        import signal
+        import socket
+        import sys
+        import time
+        import _testcapi
+        from test.support import captured_stderr
+
+        signum = signal.SIGINT
+
+        def handler(signum, frame):
+            pass
+
+        signal.signal(signum, handler)
+
+        read, write = socket.socketpair()
+        read.setblocking(False)
+        write.setblocking(False)
+
+        signal.set_wakeup_fd(write.fileno())
+
+        # Close sockets: send() will fail
+        read.close()
+        write.close()
+
+        with captured_stderr() as err:
+            signal.raise_signal(signum)
+
+        err = err.getvalue()
+        if ('Exception ignored when trying to {action} to the signal wakeup fd'
+            not in err):
+            raise AssertionError(err)
+        """.format(action=action)
+        assert_python_ok('-c', code)
+
+    @unittest.skipIf(_testcapi is None, 'need _testcapi')
+    def test_warn_on_full_buffer(self):
+        # Use a subprocess to have only one thread.
+        if os.name == 'nt':
+            action = 'send'
+        else:
+            action = 'write'
+        code = """if 1:
+        import errno
+        import signal
+        import socket
+        import sys
+        import time
+        import _testcapi
+        from test.support import captured_stderr
+
+        signum = signal.SIGINT
+
+        # This handler will be called, but we intentionally won't read from
+        # the wakeup fd.
+        def handler(signum, frame):
+            pass
+
+        signal.signal(signum, handler)
+
+        read, write = socket.socketpair()
+
+        # Fill the socketpair buffer
+        if sys.platform == 'win32':
+            # bpo-34130: On Windows, sometimes non-blocking send fails to fill
+            # the full socketpair buffer, so use a timeout of 50 ms instead.
+            write.settimeout(0.050)
+        else:
+            write.setblocking(False)
+
+        written = 0
+        if sys.platform == "vxworks":
+            CHUNK_SIZES = (1,)
+        else:
+            # Start with large chunk size to reduce the
+            # number of send needed to fill the buffer.
+            CHUNK_SIZES = (2 ** 16, 2 ** 8, 1)
+        for chunk_size in CHUNK_SIZES:
+            chunk = b"x" * chunk_size
+            try:
+                while True:
+                    write.send(chunk)
+                    written += chunk_size
+            except (BlockingIOError, TimeoutError):
+                pass
+
+        print(f"%s bytes written into the socketpair" % written, flush=True)
+
+        write.setblocking(False)
+        try:
+            write.send(b"x")
+        except BlockingIOError:
+            # The socketpair buffer seems full
+            pass
+        else:
+            raise AssertionError("%s bytes failed to fill the socketpair "
+                                 "buffer" % written)
+
+        # By default, we get a warning when a signal arrives
+        msg = ('Exception ignored when trying to {action} '
+               'to the signal wakeup fd')
+        signal.set_wakeup_fd(write.fileno())
+
+        with captured_stderr() as err:
+            signal.raise_signal(signum)
+
+        err = err.getvalue()
+        if msg not in err:
+            raise AssertionError("first set_wakeup_fd() test failed, "
+                                 "stderr: %r" % err)
+
+        # And also if warn_on_full_buffer=True
+        signal.set_wakeup_fd(write.fileno(), warn_on_full_buffer=True)
+
+        with captured_stderr() as err:
+            signal.raise_signal(signum)
+
+        err = err.getvalue()
+        if msg not in err:
+            raise AssertionError("set_wakeup_fd(warn_on_full_buffer=True) "
+                                 "test failed, stderr: %r" % err)
+
+        # But not if warn_on_full_buffer=False
+        signal.set_wakeup_fd(write.fileno(), warn_on_full_buffer=False)
+
+        with captured_stderr() as err:
+            signal.raise_signal(signum)
+
+        err = err.getvalue()
+        if err != "":
+            raise AssertionError("set_wakeup_fd(warn_on_full_buffer=False) "
+                                 "test failed, stderr: %r" % err)
+
+        # And then check the default again, to make sure warn_on_full_buffer
+        # settings don't leak across calls.
+        signal.set_wakeup_fd(write.fileno())
+
+        with captured_stderr() as err:
+            signal.raise_signal(signum)
+
+        err = err.getvalue()
+        if msg not in err:
+            raise AssertionError("second set_wakeup_fd() test failed, "
+                                 "stderr: %r" % err)
+
+        """.format(action=action)
+        assert_python_ok('-c', code)
+
+
+@unittest.skipIf(sys.platform == "win32", "Not valid on Windows")
+@unittest.skipUnless(hasattr(signal, 'siginterrupt'), "needs signal.siginterrupt()")
+@support.requires_subprocess()
+@unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
+class SiginterruptTest(unittest.TestCase):
+
+    def readpipe_interrupted(self, interrupt):
+        """Perform a read during which a signal will arrive.  Return True if the
+        read is interrupted by the signal and raises an exception.  Return False
+        if it returns normally.
+        """
+        # use a subprocess to have only one thread, to have a timeout on the
+        # blocking read and to not touch signal handling in this process
+        code = """if 1:
+            import errno
+            import os
+            import signal
+            import sys
+
+            interrupt = %r
+            r, w = os.pipe()
+
+            def handler(signum, frame):
+                1 / 0
+
+            signal.signal(signal.SIGALRM, handler)
+            if interrupt is not None:
+                signal.siginterrupt(signal.SIGALRM, interrupt)
+
+            print("ready")
+            sys.stdout.flush()
+
+            # run the test twice
+            try:
+                for loop in range(2):
+                    # send a SIGALRM in a second (during the read)
+                    signal.alarm(1)
+                    try:
+                        # blocking call: read from a pipe without data
+                        os.read(r, 1)
+                    except ZeroDivisionError:
+                        pass
+                    else:
+                        sys.exit(2)
+                sys.exit(3)
+            finally:
+                os.close(r)
+                os.close(w)
+        """ % (interrupt,)
+        with spawn_python('-c', code) as process:
+            try:
+                # wait until the child process is loaded and has started
+                first_line = process.stdout.readline()
+
+                stdout, stderr = process.communicate(timeout=support.SHORT_TIMEOUT)
+            except subprocess.TimeoutExpired:
+                process.kill()
+                return False
+            else:
+                stdout = first_line + stdout
+                exitcode = process.wait()
+                if exitcode not in (2, 3):
+                    raise Exception("Child error (exit code %s): %r"
+                                    % (exitcode, stdout))
+                return (exitcode == 3)
+
+    def test_without_siginterrupt(self):
+        # If a signal handler is installed and siginterrupt is not called
+        # at all, when that signal arrives, it interrupts a syscall that's in
+        # progress.
+        interrupted = self.readpipe_interrupted(None)
+        self.assertTrue(interrupted)
+
+    def test_siginterrupt_on(self):
+        # If a signal handler is installed and siginterrupt is called with
+        # a true value for the second argument, when that signal arrives, it
+        # interrupts a syscall that's in progress.
+        interrupted = self.readpipe_interrupted(True)
+        self.assertTrue(interrupted)
+
+    def test_siginterrupt_off(self):
+        # If a signal handler is installed and siginterrupt is called with
+        # a false value for the second argument, when that signal arrives, it
+        # does not interrupt a syscall that's in progress.
+        interrupted = self.readpipe_interrupted(False)
+        self.assertFalse(interrupted)
+
+
+@unittest.skipIf(sys.platform == "win32", "Not valid on Windows")
+@unittest.skipUnless(hasattr(signal, 'getitimer') and hasattr(signal, 'setitimer'),
+                         "needs signal.getitimer() and signal.setitimer()")
+class ItimerTest(unittest.TestCase):
+    def setUp(self):
+        self.hndl_called = False
+        self.hndl_count = 0
+        self.itimer = None
+        self.old_alarm = signal.signal(signal.SIGALRM, self.sig_alrm)
+
+    def tearDown(self):
+        signal.signal(signal.SIGALRM, self.old_alarm)
+        if self.itimer is not None: # test_itimer_exc doesn't change this attr
+            # just ensure that itimer is stopped
+            signal.setitimer(self.itimer, 0)
+
+    def sig_alrm(self, *args):
+        self.hndl_called = True
+
+    def sig_vtalrm(self, *args):
+        self.hndl_called = True
+
+        if self.hndl_count > 3:
+            # it shouldn't be here, because it should have been disabled.
+            raise signal.ItimerError("setitimer didn't disable ITIMER_VIRTUAL "
+                "timer.")
+        elif self.hndl_count == 3:
+            # disable ITIMER_VIRTUAL, this function shouldn't be called anymore
+            signal.setitimer(signal.ITIMER_VIRTUAL, 0)
+
+        self.hndl_count += 1
+
+    def sig_prof(self, *args):
+        self.hndl_called = True
+        signal.setitimer(signal.ITIMER_PROF, 0)
+
+    def test_itimer_exc(self):
+        # XXX I'm assuming -1 is an invalid itimer, but maybe some platform
+        # defines it ?
+        self.assertRaises(signal.ItimerError, signal.setitimer, -1, 0)
+        # Negative times are treated as zero on some platforms.
+        if 0:
+            self.assertRaises(signal.ItimerError,
+                              signal.setitimer, signal.ITIMER_REAL, -1)
+
+    def test_itimer_real(self):
+        self.itimer = signal.ITIMER_REAL
+        signal.setitimer(self.itimer, 1.0)
+        signal.pause()
+        self.assertEqual(self.hndl_called, True)
+
+    # Issue 3864, unknown if this affects earlier versions of freebsd also
+    @unittest.skipIf(sys.platform in ('netbsd5',),
+        'itimer not reliable (does not mix well with threading) on some BSDs.')
+    def test_itimer_virtual(self):
+        self.itimer = signal.ITIMER_VIRTUAL
+        signal.signal(signal.SIGVTALRM, self.sig_vtalrm)
+        signal.setitimer(self.itimer, 0.3, 0.2)
+
+        for _ in support.busy_retry(support.LONG_TIMEOUT):
+            # use up some virtual time by doing real work
+            _ = pow(12345, 67890, 10000019)
+            if signal.getitimer(self.itimer) == (0.0, 0.0):
+                # sig_vtalrm handler stopped this itimer
+                break
+
+        # virtual itimer should be (0.0, 0.0) now
+        self.assertEqual(signal.getitimer(self.itimer), (0.0, 0.0))
+        # and the handler should have been called
+        self.assertEqual(self.hndl_called, True)
+
+    def test_itimer_prof(self):
+        self.itimer = signal.ITIMER_PROF
+        signal.signal(signal.SIGPROF, self.sig_prof)
+        signal.setitimer(self.itimer, 0.2, 0.2)
+
+        for _ in support.busy_retry(support.LONG_TIMEOUT):
+            # do some work
+            _ = pow(12345, 67890, 10000019)
+            if signal.getitimer(self.itimer) == (0.0, 0.0):
+                # sig_prof handler stopped this itimer
+                break
+
+        # profiling itimer should be (0.0, 0.0) now
+        self.assertEqual(signal.getitimer(self.itimer), (0.0, 0.0))
+        # and the handler should have been called
+        self.assertEqual(self.hndl_called, True)
+
+    def test_setitimer_tiny(self):
+        # bpo-30807: C setitimer() takes a microsecond-resolution interval.
+        # Check that float -> timeval conversion doesn't round
+        # the interval down to zero, which would disable the timer.
+        self.itimer = signal.ITIMER_REAL
+        signal.setitimer(self.itimer, 1e-6)
+        time.sleep(1)
+        self.assertEqual(self.hndl_called, True)
+
+
+class PendingSignalsTests(unittest.TestCase):
+    """
+    Test pthread_sigmask(), pthread_kill(), sigpending() and sigwait()
+    functions.
+    """
+    @unittest.skipUnless(hasattr(signal, 'sigpending'),
+                         'need signal.sigpending()')
+    def test_sigpending_empty(self):
+        self.assertEqual(signal.sigpending(), set())
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+                         'need signal.pthread_sigmask()')
+    @unittest.skipUnless(hasattr(signal, 'sigpending'),
+                         'need signal.sigpending()')
+    def test_sigpending(self):
+        code = """if 1:
+            import os
+            import signal
+
+            def handler(signum, frame):
+                1/0
+
+            signum = signal.SIGUSR1
+            signal.signal(signum, handler)
+
+            signal.pthread_sigmask(signal.SIG_BLOCK, [signum])
+            os.kill(os.getpid(), signum)
+            pending = signal.sigpending()
+            for sig in pending:
+                assert isinstance(sig, signal.Signals), repr(pending)
+            if pending != {signum}:
+                raise Exception('%s != {%s}' % (pending, signum))
+            try:
+                signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum])
+            except ZeroDivisionError:
+                pass
+            else:
+                raise Exception("ZeroDivisionError not raised")
+        """
+        assert_python_ok('-c', code)
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_kill'),
+                         'need signal.pthread_kill()')
+    @threading_helper.requires_working_threading()
+    def test_pthread_kill(self):
+        code = """if 1:
+            import signal
+            import threading
+            import sys
+
+            signum = signal.SIGUSR1
+
+            def handler(signum, frame):
+                1/0
+
+            signal.signal(signum, handler)
+
+            tid = threading.get_ident()
+            try:
+                signal.pthread_kill(tid, signum)
+            except ZeroDivisionError:
+                pass
+            else:
+                raise Exception("ZeroDivisionError not raised")
+        """
+        assert_python_ok('-c', code)
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+                         'need signal.pthread_sigmask()')
+    def wait_helper(self, blocked, test):
+        """
+        test: body of the "def test(signum):" function.
+        blocked: number of the blocked signal
+        """
+        code = '''if 1:
+        import signal
+        import sys
+        from signal import Signals
+
+        def handler(signum, frame):
+            1/0
+
+        %s
+
+        blocked = %s
+        signum = signal.SIGALRM
+
+        # child: block and wait the signal
+        try:
+            signal.signal(signum, handler)
+            signal.pthread_sigmask(signal.SIG_BLOCK, [blocked])
+
+            # Do the tests
+            test(signum)
+
+            # The handler must not be called on unblock
+            try:
+                signal.pthread_sigmask(signal.SIG_UNBLOCK, [blocked])
+            except ZeroDivisionError:
+                print("the signal handler has been called",
+                      file=sys.stderr)
+                sys.exit(1)
+        except BaseException as err:
+            print("error: {}".format(err), file=sys.stderr)
+            sys.stderr.flush()
+            sys.exit(1)
+        ''' % (test.strip(), blocked)
+
+        # sig*wait* must be called with the signal blocked: since the current
+        # process might have several threads running, use a subprocess to have
+        # a single thread.
+        assert_python_ok('-c', code)
+
+    @unittest.skipUnless(hasattr(signal, 'sigwait'),
+                         'need signal.sigwait()')
+    def test_sigwait(self):
+        self.wait_helper(signal.SIGALRM, '''
+        def test(signum):
+            signal.alarm(1)
+            received = signal.sigwait([signum])
+            assert isinstance(received, signal.Signals), received
+            if received != signum:
+                raise Exception('received %s, not %s' % (received, signum))
+        ''')
+
+    @unittest.skipUnless(hasattr(signal, 'sigwaitinfo'),
+                         'need signal.sigwaitinfo()')
+    def test_sigwaitinfo(self):
+        self.wait_helper(signal.SIGALRM, '''
+        def test(signum):
+            signal.alarm(1)
+            info = signal.sigwaitinfo([signum])
+            if info.si_signo != signum:
+                raise Exception("info.si_signo != %s" % signum)
+        ''')
+
+    @unittest.skipUnless(hasattr(signal, 'sigtimedwait'),
+                         'need signal.sigtimedwait()')
+    def test_sigtimedwait(self):
+        self.wait_helper(signal.SIGALRM, '''
+        def test(signum):
+            signal.alarm(1)
+            info = signal.sigtimedwait([signum], 10.1000)
+            if info.si_signo != signum:
+                raise Exception('info.si_signo != %s' % signum)
+        ''')
+
+    @unittest.skipUnless(hasattr(signal, 'sigtimedwait'),
+                         'need signal.sigtimedwait()')
+    def test_sigtimedwait_poll(self):
+        # check that polling with sigtimedwait works
+        self.wait_helper(signal.SIGALRM, '''
+        def test(signum):
+            import os
+            os.kill(os.getpid(), signum)
+            info = signal.sigtimedwait([signum], 0)
+            if info.si_signo != signum:
+                raise Exception('info.si_signo != %s' % signum)
+        ''')
+
+    @unittest.skipUnless(hasattr(signal, 'sigtimedwait'),
+                         'need signal.sigtimedwait()')
+    def test_sigtimedwait_timeout(self):
+        self.wait_helper(signal.SIGALRM, '''
+        def test(signum):
+            received = signal.sigtimedwait([signum], 1.0)
+            if received is not None:
+                raise Exception("received=%r" % (received,))
+        ''')
+
+    @unittest.skipUnless(hasattr(signal, 'sigtimedwait'),
+                         'need signal.sigtimedwait()')
+    def test_sigtimedwait_negative_timeout(self):
+        signum = signal.SIGALRM
+        self.assertRaises(ValueError, signal.sigtimedwait, [signum], -1.0)
+
+    @unittest.skipUnless(hasattr(signal, 'sigwait'),
+                         'need signal.sigwait()')
+    @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+                         'need signal.pthread_sigmask()')
+    @threading_helper.requires_working_threading()
+    def test_sigwait_thread(self):
+        # Check that calling sigwait() from a thread doesn't suspend the whole
+        # process. A new interpreter is spawned to avoid problems when mixing
+        # threads and fork(): only async-safe functions are allowed between
+        # fork() and exec().
+        assert_python_ok("-c", """if True:
+            import os, threading, sys, time, signal
+
+            # the default handler terminates the process
+            signum = signal.SIGUSR1
+
+            def kill_later():
+                # wait until the main thread is waiting in sigwait()
+                time.sleep(1)
+                os.kill(os.getpid(), signum)
+
+            # the signal must be blocked by all the threads
+            signal.pthread_sigmask(signal.SIG_BLOCK, [signum])
+            killer = threading.Thread(target=kill_later)
+            killer.start()
+            received = signal.sigwait([signum])
+            if received != signum:
+                print("sigwait() received %s, not %s" % (received, signum),
+                      file=sys.stderr)
+                sys.exit(1)
+            killer.join()
+            # unblock the signal, which should have been cleared by sigwait()
+            signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum])
+        """)
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+                         'need signal.pthread_sigmask()')
+    def test_pthread_sigmask_arguments(self):
+        self.assertRaises(TypeError, signal.pthread_sigmask)
+        self.assertRaises(TypeError, signal.pthread_sigmask, 1)
+        self.assertRaises(TypeError, signal.pthread_sigmask, 1, 2, 3)
+        self.assertRaises(OSError, signal.pthread_sigmask, 1700, [])
+        with self.assertRaises(ValueError):
+            signal.pthread_sigmask(signal.SIG_BLOCK, [signal.NSIG])
+        with self.assertRaises(ValueError):
+            signal.pthread_sigmask(signal.SIG_BLOCK, [0])
+        with self.assertRaises(ValueError):
+            signal.pthread_sigmask(signal.SIG_BLOCK, [1<<1000])
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+                         'need signal.pthread_sigmask()')
+    def test_pthread_sigmask_valid_signals(self):
+        s = signal.pthread_sigmask(signal.SIG_BLOCK, signal.valid_signals())
+        self.addCleanup(signal.pthread_sigmask, signal.SIG_SETMASK, s)
+        # Get current blocked set
+        s = signal.pthread_sigmask(signal.SIG_UNBLOCK, signal.valid_signals())
+        self.assertLessEqual(s, signal.valid_signals())
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+                         'need signal.pthread_sigmask()')
+    @threading_helper.requires_working_threading()
+    def test_pthread_sigmask(self):
+        code = """if 1:
+        import signal
+        import os; import threading
+
+        def handler(signum, frame):
+            1/0
+
+        def kill(signum):
+            os.kill(os.getpid(), signum)
+
+        def check_mask(mask):
+            for sig in mask:
+                assert isinstance(sig, signal.Signals), repr(sig)
+
+        def read_sigmask():
+            sigmask = signal.pthread_sigmask(signal.SIG_BLOCK, [])
+            check_mask(sigmask)
+            return sigmask
+
+        signum = signal.SIGUSR1
+
+        # Install our signal handler
+        old_handler = signal.signal(signum, handler)
+
+        # Unblock SIGUSR1 (and copy the old mask) to test our signal handler
+        old_mask = signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum])
+        check_mask(old_mask)
+        try:
+            kill(signum)
+        except ZeroDivisionError:
+            pass
+        else:
+            raise Exception("ZeroDivisionError not raised")
+
+        # Block and then raise SIGUSR1. The signal is blocked: the signal
+        # handler is not called, and the signal is now pending
+        mask = signal.pthread_sigmask(signal.SIG_BLOCK, [signum])
+        check_mask(mask)
+        kill(signum)
+
+        # Check the new mask
+        blocked = read_sigmask()
+        check_mask(blocked)
+        if signum not in blocked:
+            raise Exception("%s not in %s" % (signum, blocked))
+        if old_mask ^ blocked != {signum}:
+            raise Exception("%s ^ %s != {%s}" % (old_mask, blocked, signum))
+
+        # Unblock SIGUSR1
+        try:
+            # unblock the pending signal calls immediately the signal handler
+            signal.pthread_sigmask(signal.SIG_UNBLOCK, [signum])
+        except ZeroDivisionError:
+            pass
+        else:
+            raise Exception("ZeroDivisionError not raised")
+        try:
+            kill(signum)
+        except ZeroDivisionError:
+            pass
+        else:
+            raise Exception("ZeroDivisionError not raised")
+
+        # Check the new mask
+        unblocked = read_sigmask()
+        if signum in unblocked:
+            raise Exception("%s in %s" % (signum, unblocked))
+        if blocked ^ unblocked != {signum}:
+            raise Exception("%s ^ %s != {%s}" % (blocked, unblocked, signum))
+        if old_mask != unblocked:
+            raise Exception("%s != %s" % (old_mask, unblocked))
+        """
+        assert_python_ok('-c', code)
+
+    @unittest.skipUnless(hasattr(signal, 'pthread_kill'),
+                         'need signal.pthread_kill()')
+    @threading_helper.requires_working_threading()
+    def test_pthread_kill_main_thread(self):
+        # Test that a signal can be sent to the main thread with pthread_kill()
+        # before any other thread has been created (see issue #12392).
+        code = """if True:
+            import threading
+            import signal
+            import sys
+
+            def handler(signum, frame):
+                sys.exit(3)
+
+            signal.signal(signal.SIGUSR1, handler)
+            signal.pthread_kill(threading.get_ident(), signal.SIGUSR1)
+            sys.exit(2)
+        """
+
+        with spawn_python('-c', code) as process:
+            stdout, stderr = process.communicate()
+            exitcode = process.wait()
+            if exitcode != 3:
+                raise Exception("Child error (exit code %s): %s" %
+                                (exitcode, stdout))
+
+
+class StressTest(unittest.TestCase):
+    """
+    Stress signal delivery, especially when a signal arrives in
+    the middle of recomputing the signal state or executing
+    previously tripped signal handlers.
+    """
+
+    def setsig(self, signum, handler):
+        old_handler = signal.signal(signum, handler)
+        self.addCleanup(signal.signal, signum, old_handler)
+
+    def measure_itimer_resolution(self):
+        N = 20
+        times = []
+
+        def handler(signum=None, frame=None):
+            if len(times) < N:
+                times.append(time.perf_counter())
+                # 1 µs is the smallest possible timer interval,
+                # we want to measure what the concrete duration
+                # will be on this platform
+                signal.setitimer(signal.ITIMER_REAL, 1e-6)
+
+        self.addCleanup(signal.setitimer, signal.ITIMER_REAL, 0)
+        self.setsig(signal.SIGALRM, handler)
+        handler()
+        while len(times) < N:
+            time.sleep(1e-3)
+
+        durations = [times[i+1] - times[i] for i in range(len(times) - 1)]
+        med = statistics.median(durations)
+        if support.verbose:
+            print("detected median itimer() resolution: %.6f s." % (med,))
+        return med
+
+    def decide_itimer_count(self):
+        # Some systems have poor setitimer() resolution (for example
+        # measured around 20 ms. on FreeBSD 9), so decide on a reasonable
+        # number of sequential timers based on that.
+        reso = self.measure_itimer_resolution()
+        if reso <= 1e-4:
+            return 10000
+        elif reso <= 1e-2:
+            return 100
+        else:
+            self.skipTest("detected itimer resolution (%.3f s.) too high "
+                          "(> 10 ms.) on this platform (or system too busy)"
+                          % (reso,))
+
+    @unittest.skipUnless(hasattr(signal, "setitimer"),
+                         "test needs setitimer()")
+    def test_stress_delivery_dependent(self):
+        """
+        This test uses dependent signal handlers.
+        """
+        N = self.decide_itimer_count()
+        sigs = []
+
+        def first_handler(signum, frame):
+            # 1e-6 is the minimum non-zero value for `setitimer()`.
+            # Choose a random delay so as to improve chances of
+            # triggering a race condition.  Ideally the signal is received
+            # when inside critical signal-handling routines such as
+            # Py_MakePendingCalls().
+            signal.setitimer(signal.ITIMER_REAL, 1e-6 + random.random() * 1e-5)
+
+        def second_handler(signum=None, frame=None):
+            sigs.append(signum)
+
+        # Here on Linux, SIGPROF > SIGALRM > SIGUSR1.  By using both
+        # ascending and descending sequences (SIGUSR1 then SIGALRM,
+        # SIGPROF then SIGALRM), we maximize chances of hitting a bug.
+        self.setsig(signal.SIGPROF, first_handler)
+        self.setsig(signal.SIGUSR1, first_handler)
+        self.setsig(signal.SIGALRM, second_handler)  # for ITIMER_REAL
+
+        expected_sigs = 0
+        deadline = time.monotonic() + support.SHORT_TIMEOUT
+
+        while expected_sigs < N:
+            os.kill(os.getpid(), signal.SIGPROF)
+            expected_sigs += 1
+            # Wait for handlers to run to avoid signal coalescing
+            while len(sigs) < expected_sigs and time.monotonic() < deadline:
+                time.sleep(1e-5)
+
+            os.kill(os.getpid(), signal.SIGUSR1)
+            expected_sigs += 1
+            while len(sigs) < expected_sigs and time.monotonic() < deadline:
+                time.sleep(1e-5)
+
+        # All ITIMER_REAL signals should have been delivered to the
+        # Python handler
+        self.assertEqual(len(sigs), N, "Some signals were lost")
+
+    @unittest.skipUnless(hasattr(signal, "setitimer"),
+                         "test needs setitimer()")
+    def test_stress_delivery_simultaneous(self):
+        """
+        This test uses simultaneous signal handlers.
+        """
+        N = self.decide_itimer_count()
+        sigs = []
+
+        def handler(signum, frame):
+            sigs.append(signum)
+
+        self.setsig(signal.SIGUSR1, handler)
+        self.setsig(signal.SIGALRM, handler)  # for ITIMER_REAL
+
+        expected_sigs = 0
+        while expected_sigs < N:
+            # Hopefully the SIGALRM will be received somewhere during
+            # initial processing of SIGUSR1.
+            signal.setitimer(signal.ITIMER_REAL, 1e-6 + random.random() * 1e-5)
+            os.kill(os.getpid(), signal.SIGUSR1)
+
+            expected_sigs += 2
+            # Wait for handlers to run to avoid signal coalescing
+            for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
+                if len(sigs) >= expected_sigs:
+                    break
+
+        # All ITIMER_REAL signals should have been delivered to the
+        # Python handler
+        self.assertEqual(len(sigs), N, "Some signals were lost")
+
+    @unittest.skipUnless(hasattr(signal, "SIGUSR1"),
+                         "test needs SIGUSR1")
+    @threading_helper.requires_working_threading()
+    def test_stress_modifying_handlers(self):
+        # bpo-43406: race condition between trip_signal() and signal.signal
+        signum = signal.SIGUSR1
+        num_sent_signals = 0
+        num_received_signals = 0
+        do_stop = False
+
+        def custom_handler(signum, frame):
+            nonlocal num_received_signals
+            num_received_signals += 1
+
+        def set_interrupts():
+            nonlocal num_sent_signals
+            while not do_stop:
+                signal.raise_signal(signum)
+                num_sent_signals += 1
+
+        def cycle_handlers():
+            while num_sent_signals < 100:
+                for i in range(20000):
+                    # Cycle between a Python-defined and a non-Python handler
+                    for handler in [custom_handler, signal.SIG_IGN]:
+                        signal.signal(signum, handler)
+
+        old_handler = signal.signal(signum, custom_handler)
+        self.addCleanup(signal.signal, signum, old_handler)
+
+        t = threading.Thread(target=set_interrupts)
+        try:
+            ignored = False
+            with support.catch_unraisable_exception() as cm:
+                t.start()
+                cycle_handlers()
+                do_stop = True
+                t.join()
+
+                if cm.unraisable is not None:
+                    # An unraisable exception may be printed out when
+                    # a signal is ignored due to the aforementioned
+                    # race condition, check it.
+                    self.assertIsInstance(cm.unraisable.exc_value, OSError)
+                    self.assertIn(
+                        f"Signal {signum:d} ignored due to race condition",
+                        str(cm.unraisable.exc_value))
+                    ignored = True
+
+            # bpo-43406: Even if it is unlikely, it's technically possible that
+            # all signals were ignored because of race conditions.
+            if not ignored:
+                # Sanity check that some signals were received, but not all
+                self.assertGreater(num_received_signals, 0)
+            self.assertLess(num_received_signals, num_sent_signals)
+        finally:
+            do_stop = True
+            t.join()
+
+
+class RaiseSignalTest(unittest.TestCase):
+
+    def test_sigint(self):
+        with self.assertRaises(KeyboardInterrupt):
+            signal.raise_signal(signal.SIGINT)
+
+    @unittest.skipIf(sys.platform != "win32", "Windows specific test")
+    def test_invalid_argument(self):
+        try:
+            SIGHUP = 1 # not supported on win32
+            signal.raise_signal(SIGHUP)
+            self.fail("OSError (Invalid argument) expected")
+        except OSError as e:
+            if e.errno == errno.EINVAL:
+                pass
+            else:
+                raise
+
+    def test_handler(self):
+        is_ok = False
+        def handler(a, b):
+            nonlocal is_ok
+            is_ok = True
+        old_signal = signal.signal(signal.SIGINT, handler)
+        self.addCleanup(signal.signal, signal.SIGINT, old_signal)
+
+        signal.raise_signal(signal.SIGINT)
+        self.assertTrue(is_ok)
+
+    def test__thread_interrupt_main(self):
+        # See https://github.com/python/cpython/issues/102397
+        code = """if 1:
+        import _thread
+        class Foo():
+            def __del__(self):
+                _thread.interrupt_main()
+
+        x = Foo()
+        """
+
+        rc, out, err = assert_python_ok('-c', code)
+        self.assertIn(b'OSError: Signal 2 ignored due to race condition', err)
+
+
+
+class PidfdSignalTest(unittest.TestCase):
+
+    @unittest.skipUnless(
+        hasattr(signal, "pidfd_send_signal"),
+        "pidfd support not built in",
+    )
+    def test_pidfd_send_signal(self):
+        with self.assertRaises(OSError) as cm:
+            signal.pidfd_send_signal(0, signal.SIGINT)
+        if cm.exception.errno == errno.ENOSYS:
+            self.skipTest("kernel does not support pidfds")
+        elif cm.exception.errno == errno.EPERM:
+            self.skipTest("Not enough privileges to use pidfs")
+        self.assertEqual(cm.exception.errno, errno.EBADF)
+        my_pidfd = os.open(f'/proc/{os.getpid()}', os.O_DIRECTORY)
+        self.addCleanup(os.close, my_pidfd)
+        with self.assertRaisesRegex(TypeError, "^siginfo must be None$"):
+            signal.pidfd_send_signal(my_pidfd, signal.SIGINT, object(), 0)
+        with self.assertRaises(KeyboardInterrupt):
+            signal.pidfd_send_signal(my_pidfd, signal.SIGINT)
+
+def tearDownModule():
+    support.reap_children()
+
+if __name__ == "__main__":
+    unittest.main()

src/greentest/3.12/test_threading.py

+"""
+Tests for the threading module.
+"""
+
+import test.support
+from test.support import threading_helper, requires_subprocess
+from test.support import verbose, cpython_only, os_helper
+from test.support.import_helper import import_module
+from test.support.script_helper import assert_python_ok, assert_python_failure
+
+import random
+import sys
+import _thread
+import threading
+import time
+import unittest
+import weakref
+import os
+import subprocess
+import signal
+import textwrap
+import traceback
+import warnings
+
+from unittest import mock
+from gevent.tests import lock_tests # gevent: use our local copy
+#from test import lock_tests
+from test import support
+
+threading_helper.requires_working_threading(module=True)
+
+# Between fork() and exec(), only async-safe functions are allowed (issues
+# #12316 and #11870), and fork() from a worker thread is known to trigger
+# problems with some operating systems (issue #3863): skip problematic tests
+# on platforms known to behave badly.
+platforms_to_skip = ('netbsd5', 'hp-ux11')
+
+
+def restore_default_excepthook(testcase):
+    testcase.addCleanup(setattr, threading, 'excepthook', threading.excepthook)
+    threading.excepthook = threading.__excepthook__
+
+
+# A trivial mutable counter.
+class Counter(object):
+    def __init__(self):
+        self.value = 0
+    def inc(self):
+        self.value += 1
+    def dec(self):
+        self.value -= 1
+    def get(self):
+        return self.value
+
+class TestThread(threading.Thread):
+    def __init__(self, name, testcase, sema, mutex, nrunning):
+        threading.Thread.__init__(self, name=name)
+        self.testcase = testcase
+        self.sema = sema
+        self.mutex = mutex
+        self.nrunning = nrunning
+
+    def run(self):
+        delay = random.random() / 10000.0
+        if verbose:
+            print('task %s will run for %.1f usec' %
+                  (self.name, delay * 1e6))
+
+        with self.sema:
+            with self.mutex:
+                self.nrunning.inc()
+                if verbose:
+                    print(self.nrunning.get(), 'tasks are running')
+                self.testcase.assertLessEqual(self.nrunning.get(), 3)
+
+            time.sleep(delay)
+            if verbose:
+                print('task', self.name, 'done')
+
+            with self.mutex:
+                self.nrunning.dec()
+                self.testcase.assertGreaterEqual(self.nrunning.get(), 0)
+                if verbose:
+                    print('%s is finished. %d tasks are running' %
+                          (self.name, self.nrunning.get()))
+
+
+class BaseTestCase(unittest.TestCase):
+    def setUp(self):
+        self._threads = threading_helper.threading_setup()
+
+    def tearDown(self):
+        threading_helper.threading_cleanup(*self._threads)
+        test.support.reap_children()
+
+
+class ThreadTests(BaseTestCase):
+
+    @cpython_only
+    def test_name(self):
+        def func(): pass
+
+        thread = threading.Thread(name="myname1")
+        self.assertEqual(thread.name, "myname1")
+
+        # Convert int name to str
+        thread = threading.Thread(name=123)
+        self.assertEqual(thread.name, "123")
+
+        # target name is ignored if name is specified
+        thread = threading.Thread(target=func, name="myname2")
+        self.assertEqual(thread.name, "myname2")
+
+        with mock.patch.object(threading, '_counter', return_value=2):
+            thread = threading.Thread(name="")
+            self.assertEqual(thread.name, "Thread-2")
+
+        with mock.patch.object(threading, '_counter', return_value=3):
+            thread = threading.Thread()
+            self.assertEqual(thread.name, "Thread-3")
+
+        with mock.patch.object(threading, '_counter', return_value=5):
+            thread = threading.Thread(target=func)
+            self.assertEqual(thread.name, "Thread-5 (func)")
+
+    def test_args_argument(self):
+        # bpo-45735: Using list or tuple as *args* in constructor could
+        # achieve the same effect.
+        num_list = [1]
+        num_tuple = (1,)
+
+        str_list = ["str"]
+        str_tuple = ("str",)
+
+        list_in_tuple = ([1],)
+        tuple_in_list = [(1,)]
+
+        test_cases = (
+            (num_list, lambda arg: self.assertEqual(arg, 1)),
+            (num_tuple, lambda arg: self.assertEqual(arg, 1)),
+            (str_list, lambda arg: self.assertEqual(arg, "str")),
+            (str_tuple, lambda arg: self.assertEqual(arg, "str")),
+            (list_in_tuple, lambda arg: self.assertEqual(arg, [1])),
+            (tuple_in_list, lambda arg: self.assertEqual(arg, (1,)))
+        )
+
+        for args, target in test_cases:
+            with self.subTest(target=target, args=args):
+                t = threading.Thread(target=target, args=args)
+                t.start()
+                t.join()
+
+    @cpython_only
+    def test_disallow_instantiation(self):
+        # Ensure that the type disallows instantiation (bpo-43916)
+        lock = threading.Lock()
+        test.support.check_disallow_instantiation(self, type(lock))
+
+    # Create a bunch of threads, let each do some work, wait until all are
+    # done.
+    def test_various_ops(self):
+        # This takes about n/3 seconds to run (about n/3 clumps of tasks,
+        # times about 1 second per clump).
+        NUMTASKS = 10
+
+        # no more than 3 of the 10 can run at once
+        sema = threading.BoundedSemaphore(value=3)
+        mutex = threading.RLock()
+        numrunning = Counter()
+
+        threads = []
+
+        for i in range(NUMTASKS):
+            t = TestThread("<thread %d>"%i, self, sema, mutex, numrunning)
+            threads.append(t)
+            self.assertIsNone(t.ident)
+            self.assertRegex(repr(t), r'^<TestThread\(.*, initial\)>$')
+            t.start()
+
+        if hasattr(threading, 'get_native_id'):
+            native_ids = set(t.native_id for t in threads) | {threading.get_native_id()}
+            self.assertNotIn(None, native_ids)
+            self.assertEqual(len(native_ids), NUMTASKS + 1)
+
+        if verbose:
+            print('waiting for all tasks to complete')
+        for t in threads:
+            t.join()
+            self.assertFalse(t.is_alive())
+            self.assertNotEqual(t.ident, 0)
+            self.assertIsNotNone(t.ident)
+            self.assertRegex(repr(t), r'^<TestThread\(.*, stopped -?\d+\)>$')
+        if verbose:
+            print('all tasks done')
+        self.assertEqual(numrunning.get(), 0)
+
+    def test_ident_of_no_threading_threads(self):
+        # The ident still must work for the main thread and dummy threads.
+        self.assertIsNotNone(threading.current_thread().ident)
+        def f():
+            ident.append(threading.current_thread().ident)
+            done.set()
+        done = threading.Event()
+        ident = []
+        with threading_helper.wait_threads_exit():
+            tid = _thread.start_new_thread(f, ())
+            done.wait()
+            self.assertEqual(ident[0], tid)
+        # Kill the "immortal" _DummyThread
+        del threading._active[ident[0]]
+
+    # run with a small(ish) thread stack size (256 KiB)
+    def test_various_ops_small_stack(self):
+        if verbose:
+            print('with 256 KiB thread stack size...')
+        try:
+            threading.stack_size(262144)
+        except _thread.error:
+            raise unittest.SkipTest(
+                'platform does not support changing thread stack size')
+        self.test_various_ops()
+        threading.stack_size(0)
+
+    # run with a large thread stack size (1 MiB)
+    def test_various_ops_large_stack(self):
+        if verbose:
+            print('with 1 MiB thread stack size...')
+        try:
+            threading.stack_size(0x100000)
+        except _thread.error:
+            raise unittest.SkipTest(
+                'platform does not support changing thread stack size')
+        self.test_various_ops()
+        threading.stack_size(0)
+
+    def test_foreign_thread(self):
+        # Check that a "foreign" thread can use the threading module.
+        def f(mutex):
+            # Calling current_thread() forces an entry for the foreign
+            # thread to get made in the threading._active map.
+            threading.current_thread()
+            mutex.release()
+
+        mutex = threading.Lock()
+        mutex.acquire()
+        with threading_helper.wait_threads_exit():
+            tid = _thread.start_new_thread(f, (mutex,))
+            # Wait for the thread to finish.
+            mutex.acquire()
+        self.assertIn(tid, threading._active)
+        self.assertIsInstance(threading._active[tid], threading._DummyThread)
+        #Issue 29376
+        self.assertTrue(threading._active[tid].is_alive())
+        self.assertRegex(repr(threading._active[tid]), '_DummyThread')
+        del threading._active[tid]
+
+    # PyThreadState_SetAsyncExc() is a CPython-only gimmick, not (currently)
+    # exposed at the Python level.  This test relies on ctypes to get at it.
+    def test_PyThreadState_SetAsyncExc(self):
+        ctypes = import_module("ctypes")
+
+        set_async_exc = ctypes.pythonapi.PyThreadState_SetAsyncExc
+        set_async_exc.argtypes = (ctypes.c_ulong, ctypes.py_object)
+
+        class AsyncExc(Exception):
+            pass
+
+        exception = ctypes.py_object(AsyncExc)
+
+        # First check it works when setting the exception from the same thread.
+        tid = threading.get_ident()
+        self.assertIsInstance(tid, int)
+        self.assertGreater(tid, 0)
+
+        try:
+            result = set_async_exc(tid, exception)
+            # The exception is async, so we might have to keep the VM busy until
+            # it notices.
+            while True:
+                pass
+        except AsyncExc:
+            pass
+        else:
+            # This code is unreachable but it reflects the intent. If we wanted
+            # to be smarter the above loop wouldn't be infinite.
+            self.fail("AsyncExc not raised")
+        try:
+            self.assertEqual(result, 1) # one thread state modified
+        except UnboundLocalError:
+            # The exception was raised too quickly for us to get the result.
+            pass
+
+        # `worker_started` is set by the thread when it's inside a try/except
+        # block waiting to catch the asynchronously set AsyncExc exception.
+        # `worker_saw_exception` is set by the thread upon catching that
+        # exception.
+        worker_started = threading.Event()
+        worker_saw_exception = threading.Event()
+
+        class Worker(threading.Thread):
+            def run(self):
+                self.id = threading.get_ident()
+                self.finished = False
+
+                try:
+                    while True:
+                        worker_started.set()
+                        time.sleep(0.1)
+                except AsyncExc:
+                    self.finished = True
+                    worker_saw_exception.set()
+
+        t = Worker()
+        t.daemon = True # so if this fails, we don't hang Python at shutdown
+        t.start()
+        if verbose:
+            print("    started worker thread")
+
+        # Try a thread id that doesn't make sense.
+        if verbose:
+            print("    trying nonsensical thread id")
+        result = set_async_exc(-1, exception)
+        self.assertEqual(result, 0)  # no thread states modified
+
+        # Now raise an exception in the worker thread.
+        if verbose:
+            print("    waiting for worker thread to get started")
+        ret = worker_started.wait()
+        self.assertTrue(ret)
+        if verbose:
+            print("    verifying worker hasn't exited")
+        self.assertFalse(t.finished)
+        if verbose:
+            print("    attempting to raise asynch exception in worker")
+        result = set_async_exc(t.id, exception)
+        self.assertEqual(result, 1) # one thread state modified
+        if verbose:
+            print("    waiting for worker to say it caught the exception")
+        worker_saw_exception.wait(timeout=support.SHORT_TIMEOUT)
+        self.assertTrue(t.finished)
+        if verbose:
+            print("    all OK -- joining worker")
+        if t.finished:
+            t.join()
+        # else the thread is still running, and we have no way to kill it
+
+    def test_limbo_cleanup(self):
+        # Issue 7481: Failure to start thread should cleanup the limbo map.
+        def fail_new_thread(*args):
+            raise threading.ThreadError()
+        _start_new_thread = threading._start_new_thread
+        threading._start_new_thread = fail_new_thread
+        try:
+            t = threading.Thread(target=lambda: None)
+            self.assertRaises(threading.ThreadError, t.start)
+            self.assertFalse(
+                t in threading._limbo,
+                "Failed to cleanup _limbo map on failure of Thread.start().")
+        finally:
+            threading._start_new_thread = _start_new_thread
+
+    def test_finalize_running_thread(self):
+        # Issue 1402: the PyGILState_Ensure / _Release functions may be called
+        # very late on python exit: on deallocation of a running thread for
+        # example.
+        import_module("ctypes")
+
+        rc, out, err = assert_python_failure("-c", """if 1:
+            import ctypes, sys, time, _thread
+
+            # This lock is used as a simple event variable.
+            ready = _thread.allocate_lock()
+            ready.acquire()
+
+            # Module globals are cleared before __del__ is run
+            # So we save the functions in class dict
+            class C:
+                ensure = ctypes.pythonapi.PyGILState_Ensure
+                release = ctypes.pythonapi.PyGILState_Release
+                def __del__(self):
+                    state = self.ensure()
+                    self.release(state)
+
+            def waitingThread():
+                x = C()
+                ready.release()
+                time.sleep(100)
+
+            _thread.start_new_thread(waitingThread, ())
+            ready.acquire()  # Be sure the other thread is waiting.
+            sys.exit(42)
+            """)
+        self.assertEqual(rc, 42)
+
+    def test_finalize_with_trace(self):
+        # Issue1733757
+        # Avoid a deadlock when sys.settrace steps into threading._shutdown
+        assert_python_ok("-c", """if 1:
+            import sys, threading
+
+            # A deadlock-killer, to prevent the
+            # testsuite to hang forever
+            def killer():
+                import os, time
+                time.sleep(2)
+                print('program blocked; aborting')
+                os._exit(2)
+            t = threading.Thread(target=killer)
+            t.daemon = True
+            t.start()
+
+            # This is the trace function
+            def func(frame, event, arg):
+                threading.current_thread()
+                return func
+
+            sys.settrace(func)
+            """)
+
+    def test_join_nondaemon_on_shutdown(self):
+        # Issue 1722344
+        # Raising SystemExit skipped threading._shutdown
+        rc, out, err = assert_python_ok("-c", """if 1:
+                import threading
+                from time import sleep
+
+                def child():
+                    sleep(1)
+                    # As a non-daemon thread we SHOULD wake up and nothing
+                    # should be torn down yet
+                    print("Woke up, sleep function is:", sleep)
+
+                threading.Thread(target=child).start()
+                raise SystemExit
+            """)
+        self.assertEqual(out.strip(),
+            b"Woke up, sleep function is: <built-in function sleep>")
+        self.assertEqual(err, b"")
+
+    def test_enumerate_after_join(self):
+        # Try hard to trigger #1703448: a thread is still returned in
+        # threading.enumerate() after it has been join()ed.
+        enum = threading.enumerate
+        old_interval = sys.getswitchinterval()
+        try:
+            for i in range(1, 100):
+                sys.setswitchinterval(i * 0.0002)
+                t = threading.Thread(target=lambda: None)
+                t.start()
+                t.join()
+                l = enum()
+                self.assertNotIn(t, l,
+                    "#1703448 triggered after %d trials: %s" % (i, l))
+        finally:
+            sys.setswitchinterval(old_interval)
+
+    def test_no_refcycle_through_target(self):
+        class RunSelfFunction(object):
+            def __init__(self, should_raise):
+                # The links in this refcycle from Thread back to self
+                # should be cleaned up when the thread completes.
+                self.should_raise = should_raise
+                self.thread = threading.Thread(target=self._run,
+                                               args=(self,),
+                                               kwargs={'yet_another':self})
+                self.thread.start()
+
+            def _run(self, other_ref, yet_another):
+                if self.should_raise:
+                    raise SystemExit
+
+        restore_default_excepthook(self)
+
+        cyclic_object = RunSelfFunction(should_raise=False)
+        weak_cyclic_object = weakref.ref(cyclic_object)
+        cyclic_object.thread.join()
+        del cyclic_object
+        self.assertIsNone(weak_cyclic_object(),
+                         msg=('%d references still around' %
+                              sys.getrefcount(weak_cyclic_object())))
+
+        raising_cyclic_object = RunSelfFunction(should_raise=True)
+        weak_raising_cyclic_object = weakref.ref(raising_cyclic_object)
+        raising_cyclic_object.thread.join()
+        del raising_cyclic_object
+        self.assertIsNone(weak_raising_cyclic_object(),
+                         msg=('%d references still around' %
+                              sys.getrefcount(weak_raising_cyclic_object())))
+
+    def test_old_threading_api(self):
+        # Just a quick sanity check to make sure the old method names are
+        # still present
+        t = threading.Thread()
+        with self.assertWarnsRegex(DeprecationWarning,
+                                   r'get the daemon attribute'):
+            t.isDaemon()
+        with self.assertWarnsRegex(DeprecationWarning,
+                                   r'set the daemon attribute'):
+            t.setDaemon(True)
+        with self.assertWarnsRegex(DeprecationWarning,
+                                   r'get the name attribute'):
+            t.getName()
+        with self.assertWarnsRegex(DeprecationWarning,
+                                   r'set the name attribute'):
+            t.setName("name")
+
+        e = threading.Event()
+        with self.assertWarnsRegex(DeprecationWarning, 'use is_set()'):
+            e.isSet()
+
+        cond = threading.Condition()
+        cond.acquire()
+        with self.assertWarnsRegex(DeprecationWarning, 'use notify_all()'):
+            cond.notifyAll()
+
+        with self.assertWarnsRegex(DeprecationWarning, 'use active_count()'):
+            threading.activeCount()
+        with self.assertWarnsRegex(DeprecationWarning, 'use current_thread()'):
+            threading.currentThread()
+
+    def test_repr_daemon(self):
+        t = threading.Thread()
+        self.assertNotIn('daemon', repr(t))
+        t.daemon = True
+        self.assertIn('daemon', repr(t))
+
+    def test_daemon_param(self):
+        t = threading.Thread()
+        self.assertFalse(t.daemon)
+        t = threading.Thread(daemon=False)
+        self.assertFalse(t.daemon)
+        t = threading.Thread(daemon=True)
+        self.assertTrue(t.daemon)
+
+    @support.requires_fork()
+    def test_dummy_thread_after_fork(self):
+        # Issue #14308: a dummy thread in the active list doesn't mess up
+        # the after-fork mechanism.
+        code = """if 1:
+            import _thread, threading, os, time, warnings
+
+            def background_thread(evt):
+                # Creates and registers the _DummyThread instance
+                threading.current_thread()
+                evt.set()
+                time.sleep(10)
+
+            evt = threading.Event()
+            _thread.start_new_thread(background_thread, (evt,))
+            evt.wait()
+            assert threading.active_count() == 2, threading.active_count()
+            with warnings.catch_warnings(record=True) as ws:
+                warnings.filterwarnings(
+                        "always", category=DeprecationWarning)
+                if os.fork() == 0:
+                    assert threading.active_count() == 1, threading.active_count()
+                    os._exit(0)
+                else:
+                    assert ws[0].category == DeprecationWarning, ws[0]
+                    assert 'fork' in str(ws[0].message), ws[0]
+                    os.wait()
+        """
+        _, out, err = assert_python_ok("-c", code)
+        self.assertEqual(out, b'')
+        self.assertEqual(err, b'')
+
+    @support.requires_fork()
+    def test_is_alive_after_fork(self):
+        # Try hard to trigger #18418: is_alive() could sometimes be True on
+        # threads that vanished after a fork.
+        old_interval = sys.getswitchinterval()
+        self.addCleanup(sys.setswitchinterval, old_interval)
+
+        # Make the bug more likely to manifest.
+        test.support.setswitchinterval(1e-6)
+
+        for i in range(20):
+            t = threading.Thread(target=lambda: None)
+            t.start()
+            # Ignore the warning about fork with threads.
+            with warnings.catch_warnings(category=DeprecationWarning,
+                                         action="ignore"):
+                if (pid := os.fork()) == 0:
+                    os._exit(11 if t.is_alive() else 10)
+                else:
+                    t.join()
+
+                    support.wait_process(pid, exitcode=10)
+
+    def test_main_thread(self):
+        main = threading.main_thread()
+        self.assertEqual(main.name, 'MainThread')
+        self.assertEqual(main.ident, threading.current_thread().ident)
+        self.assertEqual(main.ident, threading.get_ident())
+
+        def f():
+            self.assertNotEqual(threading.main_thread().ident,
+                                threading.current_thread().ident)
+        th = threading.Thread(target=f)
+        th.start()
+        th.join()
+
+    @support.requires_fork()
+    @unittest.skipUnless(hasattr(os, 'waitpid'), "test needs os.waitpid()")
+    def test_main_thread_after_fork(self):
+        code = """if 1:
+            import os, threading
+            from test import support
+
+            pid = os.fork()
+            if pid == 0:
+                main = threading.main_thread()
+                print(main.name)
+                print(main.ident == threading.current_thread().ident)
+                print(main.ident == threading.get_ident())
+            else:
+                support.wait_process(pid, exitcode=0)
+        """
+        _, out, err = assert_python_ok("-c", code)
+        data = out.decode().replace('\r', '')
+        self.assertEqual(err, b"")
+        self.assertEqual(data, "MainThread\nTrue\nTrue\n")
+
+    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    @support.requires_fork()
+    @unittest.skipUnless(hasattr(os, 'waitpid'), "test needs os.waitpid()")
+    def test_main_thread_after_fork_from_nonmain_thread(self):
+        code = """if 1:
+            import os, threading, sys, warnings
+            from test import support
+
+            def func():
+                with warnings.catch_warnings(record=True) as ws:
+                    warnings.filterwarnings(
+                            "always", category=DeprecationWarning)
+                    pid = os.fork()
+                    if pid == 0:
+                        main = threading.main_thread()
+                        print(main.name)
+                        print(main.ident == threading.current_thread().ident)
+                        print(main.ident == threading.get_ident())
+                        # stdout is fully buffered because not a tty,
+                        # we have to flush before exit.
+                        sys.stdout.flush()
+                    else:
+                        assert ws[0].category == DeprecationWarning, ws[0]
+                        assert 'fork' in str(ws[0].message), ws[0]
+                        support.wait_process(pid, exitcode=0)
+
+            th = threading.Thread(target=func)
+            th.start()
+            th.join()
+        """
+        _, out, err = assert_python_ok("-c", code)
+        data = out.decode().replace('\r', '')
+        self.assertEqual(err.decode('utf-8'), "")
+        self.assertEqual(data, "Thread-1 (func)\nTrue\nTrue\n")
+
+    def test_main_thread_during_shutdown(self):
+        # bpo-31516: current_thread() should still point to the main thread
+        # at shutdown
+        code = """if 1:
+            import gc, threading
+
+            main_thread = threading.current_thread()
+            assert main_thread is threading.main_thread()  # sanity check
+
+            class RefCycle:
+                def __init__(self):
+                    self.cycle = self
+
+                def __del__(self):
+                    print("GC:",
+                          threading.current_thread() is main_thread,
+                          threading.main_thread() is main_thread,
+                          threading.enumerate() == [main_thread])
+
+            RefCycle()
+            gc.collect()  # sanity check
+            x = RefCycle()
+        """
+        _, out, err = assert_python_ok("-c", code)
+        data = out.decode()
+        self.assertEqual(err, b"")
+        self.assertEqual(data.splitlines(),
+                         ["GC: True True True"] * 2)
+
+    def test_finalization_shutdown(self):
+        # bpo-36402: Py_Finalize() calls threading._shutdown() which must wait
+        # until Python thread states of all non-daemon threads get deleted.
+        #
+        # Test similar to SubinterpThreadingTests.test_threads_join_2(), but
+        # test the finalization of the main interpreter.
+        code = """if 1:
+            import os
+            import threading
+            import time
+            import random
+
+            def random_sleep():
+                seconds = random.random() * 0.010
+                time.sleep(seconds)
+
+            class Sleeper:
+                def __del__(self):
+                    random_sleep()
+
+            tls = threading.local()
+
+            def f():
+                # Sleep a bit so that the thread is still running when
+                # Py_Finalize() is called.
+                random_sleep()
+                tls.x = Sleeper()
+                random_sleep()
+
+            threading.Thread(target=f).start()
+            random_sleep()
+        """
+        rc, out, err = assert_python_ok("-c", code)
+        self.assertEqual(err, b"")
+
+    def test_tstate_lock(self):
+        # Test an implementation detail of Thread objects.
+        started = _thread.allocate_lock()
+        finish = _thread.allocate_lock()
+        started.acquire()
+        finish.acquire()
+        def f():
+            started.release()
+            finish.acquire()
+            time.sleep(0.01)
+        # The tstate lock is None until the thread is started
+        t = threading.Thread(target=f)
+        self.assertIs(t._tstate_lock, None)
+        t.start()
+        started.acquire()
+        self.assertTrue(t.is_alive())
+        # The tstate lock can't be acquired when the thread is running
+        # (or suspended).
+        tstate_lock = t._tstate_lock
+        self.assertFalse(tstate_lock.acquire(timeout=0), False)
+        finish.release()
+        # When the thread ends, the state_lock can be successfully
+        # acquired.
+        self.assertTrue(tstate_lock.acquire(timeout=support.SHORT_TIMEOUT), False)
+        # But is_alive() is still True:  we hold _tstate_lock now, which
+        # prevents is_alive() from knowing the thread's end-of-life C code
+        # is done.
+        self.assertTrue(t.is_alive())
+        # Let is_alive() find out the C code is done.
+        tstate_lock.release()
+        self.assertFalse(t.is_alive())
+        # And verify the thread disposed of _tstate_lock.
+        self.assertIsNone(t._tstate_lock)
+        t.join()
+
+    def test_repr_stopped(self):
+        # Verify that "stopped" shows up in repr(Thread) appropriately.
+        started = _thread.allocate_lock()
+        finish = _thread.allocate_lock()
+        started.acquire()
+        finish.acquire()
+        def f():
+            started.release()
+            finish.acquire()
+        t = threading.Thread(target=f)
+        t.start()
+        started.acquire()
+        self.assertIn("started", repr(t))
+        finish.release()
+        # "stopped" should appear in the repr in a reasonable amount of time.
+        # Implementation detail:  as of this writing, that's trivially true
+        # if .join() is called, and almost trivially true if .is_alive() is
+        # called.  The detail we're testing here is that "stopped" shows up
+        # "all on its own".
+        LOOKING_FOR = "stopped"
+        for i in range(500):
+            if LOOKING_FOR in repr(t):
+                break
+            time.sleep(0.01)
+        self.assertIn(LOOKING_FOR, repr(t)) # we waited at least 5 seconds
+        t.join()
+
+    def test_BoundedSemaphore_limit(self):
+        # BoundedSemaphore should raise ValueError if released too often.
+        for limit in range(1, 10):
+            bs = threading.BoundedSemaphore(limit)
+            threads = [threading.Thread(target=bs.acquire)
+                       for _ in range(limit)]
+            for t in threads:
+                t.start()
+            for t in threads:
+                t.join()
+            threads = [threading.Thread(target=bs.release)
+                       for _ in range(limit)]
+            for t in threads:
+                t.start()
+            for t in threads:
+                t.join()
+            self.assertRaises(ValueError, bs.release)
+
+    @cpython_only
+    def test_frame_tstate_tracing(self):
+        # Issue #14432: Crash when a generator is created in a C thread that is
+        # destroyed while the generator is still used. The issue was that a
+        # generator contains a frame, and the frame kept a reference to the
+        # Python state of the destroyed C thread. The crash occurs when a trace
+        # function is setup.
+
+        def noop_trace(frame, event, arg):
+            # no operation
+            return noop_trace
+
+        def generator():
+            while 1:
+                yield "generator"
+
+        def callback():
+            if callback.gen is None:
+                callback.gen = generator()
+            return next(callback.gen)
+        callback.gen = None
+
+        old_trace = sys.gettrace()
+        sys.settrace(noop_trace)
+        try:
+            # Install a trace function
+            threading.settrace(noop_trace)
+
+            # Create a generator in a C thread which exits after the call
+            import _testcapi
+            _testcapi.call_in_temporary_c_thread(callback)
+
+            # Call the generator in a different Python thread, check that the
+            # generator didn't keep a reference to the destroyed thread state
+            for test in range(3):
+                # The trace function is still called here
+                callback()
+        finally:
+            sys.settrace(old_trace)
+            threading.settrace(old_trace)
+
+    def test_gettrace(self):
+        def noop_trace(frame, event, arg):
+            # no operation
+            return noop_trace
+        old_trace = threading.gettrace()
+        try:
+            threading.settrace(noop_trace)
+            trace_func = threading.gettrace()
+            self.assertEqual(noop_trace,trace_func)
+        finally:
+            threading.settrace(old_trace)
+
+    def test_gettrace_all_threads(self):
+        def fn(*args): pass
+        old_trace = threading.gettrace()
+        first_check = threading.Event()
+        second_check = threading.Event()
+
+        trace_funcs = []
+        def checker():
+            trace_funcs.append(sys.gettrace())
+            first_check.set()
+            second_check.wait()
+            trace_funcs.append(sys.gettrace())
+
+        try:
+            t = threading.Thread(target=checker)
+            t.start()
+            first_check.wait()
+            threading.settrace_all_threads(fn)
+            second_check.set()
+            t.join()
+            self.assertEqual(trace_funcs, [None, fn])
+            self.assertEqual(threading.gettrace(), fn)
+            self.assertEqual(sys.gettrace(), fn)
+        finally:
+            threading.settrace_all_threads(old_trace)
+
+        self.assertEqual(threading.gettrace(), old_trace)
+        self.assertEqual(sys.gettrace(), old_trace)
+
+    def test_getprofile(self):
+        def fn(*args): pass
+        old_profile = threading.getprofile()
+        try:
+            threading.setprofile(fn)
+            self.assertEqual(fn, threading.getprofile())
+        finally:
+            threading.setprofile(old_profile)
+
+    def test_getprofile_all_threads(self):
+        def fn(*args): pass
+        old_profile = threading.getprofile()
+        first_check = threading.Event()
+        second_check = threading.Event()
+
+        profile_funcs = []
+        def checker():
+            profile_funcs.append(sys.getprofile())
+            first_check.set()
+            second_check.wait()
+            profile_funcs.append(sys.getprofile())
+
+        try:
+            t = threading.Thread(target=checker)
+            t.start()
+            first_check.wait()
+            threading.setprofile_all_threads(fn)
+            second_check.set()
+            t.join()
+            self.assertEqual(profile_funcs, [None, fn])
+            self.assertEqual(threading.getprofile(), fn)
+            self.assertEqual(sys.getprofile(), fn)
+        finally:
+            threading.setprofile_all_threads(old_profile)
+
+        self.assertEqual(threading.getprofile(), old_profile)
+        self.assertEqual(sys.getprofile(), old_profile)
+
+    @cpython_only
+    def test_shutdown_locks(self):
+        for daemon in (False, True):
+            with self.subTest(daemon=daemon):
+                event = threading.Event()
+                thread = threading.Thread(target=event.wait, daemon=daemon)
+
+                # Thread.start() must add lock to _shutdown_locks,
+                # but only for non-daemon thread
+                thread.start()
+                tstate_lock = thread._tstate_lock
+                if not daemon:
+                    self.assertIn(tstate_lock, threading._shutdown_locks)
+                else:
+                    self.assertNotIn(tstate_lock, threading._shutdown_locks)
+
+                # unblock the thread and join it
+                event.set()
+                thread.join()
+
+                # Thread._stop() must remove tstate_lock from _shutdown_locks.
+                # Daemon threads must never add it to _shutdown_locks.
+                self.assertNotIn(tstate_lock, threading._shutdown_locks)
+
+    def test_locals_at_exit(self):
+        # bpo-19466: thread locals must not be deleted before destructors
+        # are called
+        rc, out, err = assert_python_ok("-c", """if 1:
+            import threading
+
+            class Atexit:
+                def __del__(self):
+                    print("thread_dict.atexit = %r" % thread_dict.atexit)
+
+            thread_dict = threading.local()
+            thread_dict.atexit = "value"
+
+            atexit = Atexit()
+        """)
+        self.assertEqual(out.rstrip(), b"thread_dict.atexit = 'value'")
+
+    def test_boolean_target(self):
+        # bpo-41149: A thread that had a boolean value of False would not
+        # run, regardless of whether it was callable. The correct behaviour
+        # is for a thread to do nothing if its target is None, and to call
+        # the target otherwise.
+        class BooleanTarget(object):
+            def __init__(self):
+                self.ran = False
+            def __bool__(self):
+                return False
+            def __call__(self):
+                self.ran = True
+
+        target = BooleanTarget()
+        thread = threading.Thread(target=target)
+        thread.start()
+        thread.join()
+        self.assertTrue(target.ran)
+
+    def test_leak_without_join(self):
+        # bpo-37788: Test that a thread which is not joined explicitly
+        # does not leak. Test written for reference leak checks.
+        def noop(): pass
+        with threading_helper.wait_threads_exit():
+            threading.Thread(target=noop).start()
+            # Thread.join() is not called
+
+    def test_import_from_another_thread(self):
+        # bpo-1596321: If the threading module is first import from a thread
+        # different than the main thread, threading._shutdown() must handle
+        # this case without logging an error at Python exit.
+        code = textwrap.dedent('''
+            import _thread
+            import sys
+
+            event = _thread.allocate_lock()
+            event.acquire()
+
+            def import_threading():
+                import threading
+                event.release()
+
+            if 'threading' in sys.modules:
+                raise Exception('threading is already imported')
+
+            _thread.start_new_thread(import_threading, ())
+
+            # wait until the threading module is imported
+            event.acquire()
+            event.release()
+
+            if 'threading' not in sys.modules:
+                raise Exception('threading is not imported')
+
+            # don't wait until the thread completes
+        ''')
+        rc, out, err = assert_python_ok("-c", code)
+        self.assertEqual(out, b'')
+        self.assertEqual(err, b'')
+
+    def test_start_new_thread_at_exit(self):
+        code = """if 1:
+            import atexit
+            import _thread
+
+            def f():
+                print("shouldn't be printed")
+
+            def exit_handler():
+                _thread.start_new_thread(f, ())
+
+            atexit.register(exit_handler)
+        """
+        _, out, err = assert_python_ok("-c", code)
+        self.assertEqual(out, b'')
+        self.assertIn(b"can't create new thread at interpreter shutdown", err)
+
+class ThreadJoinOnShutdown(BaseTestCase):
+
+    def _run_and_join(self, script):
+        script = """if 1:
+            import sys, os, time, threading
+
+            # a thread, which waits for the main program to terminate
+            def joiningfunc(mainthread):
+                mainthread.join()
+                print('end of thread')
+                # stdout is fully buffered because not a tty, we have to flush
+                # before exit.
+                sys.stdout.flush()
+        \n""" + script
+
+        rc, out, err = assert_python_ok("-c", script)
+        data = out.decode().replace('\r', '')
+        self.assertEqual(data, "end of main\nend of thread\n")
+
+    def test_1_join_on_shutdown(self):
+        # The usual case: on exit, wait for a non-daemon thread
+        script = """if 1:
+            import os
+            t = threading.Thread(target=joiningfunc,
+                                 args=(threading.current_thread(),))
+            t.start()
+            time.sleep(0.1)
+            print('end of main')
+            """
+        self._run_and_join(script)
+
+    @support.requires_fork()
+    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    def test_2_join_in_forked_process(self):
+        # Like the test above, but from a forked interpreter
+        script = """if 1:
+            from test import support
+
+            childpid = os.fork()
+            if childpid != 0:
+                # parent process
+                support.wait_process(childpid, exitcode=0)
+                sys.exit(0)
+
+            # child process
+            t = threading.Thread(target=joiningfunc,
+                                 args=(threading.current_thread(),))
+            t.start()
+            print('end of main')
+            """
+        self._run_and_join(script)
+
+    @support.requires_fork()
+    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    def test_3_join_in_forked_from_thread(self):
+        # Like the test above, but fork() was called from a worker thread
+        # In the forked process, the main Thread object must be marked as stopped.
+
+        script = """if 1:
+            from test import support
+
+            main_thread = threading.current_thread()
+            def worker():
+                childpid = os.fork()
+                if childpid != 0:
+                    # parent process
+                    support.wait_process(childpid, exitcode=0)
+                    sys.exit(0)
+
+                # child process
+                t = threading.Thread(target=joiningfunc,
+                                     args=(main_thread,))
+                print('end of main')
+                t.start()
+                t.join() # Should not block: main_thread is already stopped
+
+            w = threading.Thread(target=worker)
+            w.start()
+            """
+        self._run_and_join(script)
+
+    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    def test_4_daemon_threads(self):
+        # Check that a daemon thread cannot crash the interpreter on shutdown
+        # by manipulating internal structures that are being disposed of in
+        # the main thread.
+        script = """if True:
+            import os
+            import random
+            import sys
+            import time
+            import threading
+
+            thread_has_run = set()
+
+            def random_io():
+                '''Loop for a while sleeping random tiny amounts and doing some I/O.'''
+                import test.test_threading as mod
+                while True:
+                    with open(mod.__file__, 'rb') as in_f:
+                        stuff = in_f.read(200)
+                        with open(os.devnull, 'wb') as null_f:
+                            null_f.write(stuff)
+                            time.sleep(random.random() / 1995)
+                    thread_has_run.add(threading.current_thread())
+
+            def main():
+                count = 0
+                for _ in range(40):
+                    new_thread = threading.Thread(target=random_io)
+                    new_thread.daemon = True
+                    new_thread.start()
+                    count += 1
+                while len(thread_has_run) < count:
+                    time.sleep(0.001)
+                # Trigger process shutdown
+                sys.exit(0)
+
+            main()
+            """
+        rc, out, err = assert_python_ok('-c', script)
+        self.assertFalse(err)
+
+    @support.requires_fork()
+    @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
+    def test_reinit_tls_after_fork(self):
+        # Issue #13817: fork() would deadlock in a multithreaded program with
+        # the ad-hoc TLS implementation.
+
+        def do_fork_and_wait():
+            # just fork a child process and wait it
+            pid = os.fork()
+            if pid > 0:
+                support.wait_process(pid, exitcode=50)
+            else:
+                os._exit(50)
+
+        # Ignore the warning about fork with threads.
+        with warnings.catch_warnings(category=DeprecationWarning,
+                                     action="ignore"):
+            # start a bunch of threads that will fork() child processes
+            threads = []
+            for i in range(16):
+                t = threading.Thread(target=do_fork_and_wait)
+                threads.append(t)
+                t.start()
+
+            for t in threads:
+                t.join()
+
+    @support.requires_fork()
+    def test_clear_threads_states_after_fork(self):
+        # Issue #17094: check that threads states are cleared after fork()
+
+        # start a bunch of threads
+        threads = []
+        for i in range(16):
+            t = threading.Thread(target=lambda : time.sleep(0.3))
+            threads.append(t)
+            t.start()
+
+        try:
+            # Ignore the warning about fork with threads.
+            with warnings.catch_warnings(category=DeprecationWarning,
+                                         action="ignore"):
+                pid = os.fork()
+                if pid == 0:
+                    # check that threads states have been cleared
+                    if len(sys._current_frames()) == 1:
+                        os._exit(51)
+                    else:
+                        os._exit(52)
+                else:
+                    support.wait_process(pid, exitcode=51)
+        finally:
+            for t in threads:
+                t.join()
+
+
+class SubinterpThreadingTests(BaseTestCase):
+    def pipe(self):
+        r, w = os.pipe()
+        self.addCleanup(os.close, r)
+        self.addCleanup(os.close, w)
+        if hasattr(os, 'set_blocking'):
+            os.set_blocking(r, False)
+        return (r, w)
+
+    def test_threads_join(self):
+        # Non-daemon threads should be joined at subinterpreter shutdown
+        # (issue #18808)
+        r, w = self.pipe()
+        code = textwrap.dedent(r"""
+            import os
+            import random
+            import threading
+            import time
+
+            def random_sleep():
+                seconds = random.random() * 0.010
+                time.sleep(seconds)
+
+            def f():
+                # Sleep a bit so that the thread is still running when
+                # Py_EndInterpreter is called.
+                random_sleep()
+                os.write(%d, b"x")
+
+            threading.Thread(target=f).start()
+            random_sleep()
+        """ % (w,))
+        ret = test.support.run_in_subinterp(code)
+        self.assertEqual(ret, 0)
+        # The thread was joined properly.
+        self.assertEqual(os.read(r, 1), b"x")
+
+    def test_threads_join_2(self):
+        # Same as above, but a delay gets introduced after the thread's
+        # Python code returned but before the thread state is deleted.
+        # To achieve this, we register a thread-local object which sleeps
+        # a bit when deallocated.
+        r, w = self.pipe()
+        code = textwrap.dedent(r"""
+            import os
+            import random
+            import threading
+            import time
+
+            def random_sleep():
+                seconds = random.random() * 0.010
+                time.sleep(seconds)
+
+            class Sleeper:
+                def __del__(self):
+                    random_sleep()
+
+            tls = threading.local()
+
+            def f():
+                # Sleep a bit so that the thread is still running when
+                # Py_EndInterpreter is called.
+                random_sleep()
+                tls.x = Sleeper()
+                os.write(%d, b"x")
+
+            threading.Thread(target=f).start()
+            random_sleep()
+        """ % (w,))
+        ret = test.support.run_in_subinterp(code)
+        self.assertEqual(ret, 0)
+        # The thread was joined properly.
+        self.assertEqual(os.read(r, 1), b"x")
+
+    @cpython_only
+    def test_daemon_threads_fatal_error(self):
+        subinterp_code = f"""if 1:
+            import os
+            import threading
+            import time
+
+            def f():
+                # Make sure the daemon thread is still running when
+                # Py_EndInterpreter is called.
+                time.sleep({test.support.SHORT_TIMEOUT})
+            threading.Thread(target=f, daemon=True).start()
+            """
+        script = r"""if 1:
+            import _testcapi
+
+            _testcapi.run_in_subinterp(%r)
+            """ % (subinterp_code,)
+        with test.support.SuppressCrashReport():
+            rc, out, err = assert_python_failure("-c", script)
+        self.assertIn("Fatal Python error: Py_EndInterpreter: "
+                      "not the last thread", err.decode())
+
+    def _check_allowed(self, before_start='', *,
+                       allowed=True,
+                       daemon_allowed=True,
+                       daemon=False,
+                       ):
+        subinterp_code = textwrap.dedent(f"""
+            import test.support
+            import threading
+            def func():
+                print('this should not have run!')
+            t = threading.Thread(target=func, daemon={daemon})
+            {before_start}
+            t.start()
+            """)
+        script = textwrap.dedent(f"""
+            import test.support
+            test.support.run_in_subinterp_with_config(
+                {subinterp_code!r},
+                use_main_obmalloc=True,
+                allow_fork=True,
+                allow_exec=True,
+                allow_threads={allowed},
+                allow_daemon_threads={daemon_allowed},
+                check_multi_interp_extensions=False,
+                own_gil=False,
+            )
+            """)
+        with test.support.SuppressCrashReport():
+            _, _, err = assert_python_ok("-c", script)
+        return err.decode()
+
+    @cpython_only
+    def test_threads_not_allowed(self):
+        err = self._check_allowed(
+            allowed=False,
+            daemon_allowed=False,
+            daemon=False,
+        )
+        self.assertIn('RuntimeError', err)
+
+    @cpython_only
+    def test_daemon_threads_not_allowed(self):
+        with self.subTest('via Thread()'):
+            err = self._check_allowed(
+                allowed=True,
+                daemon_allowed=False,
+                daemon=True,
+            )
+            self.assertIn('RuntimeError', err)
+
+        with self.subTest('via Thread.daemon setter'):
+            err = self._check_allowed(
+                't.daemon = True',
+                allowed=True,
+                daemon_allowed=False,
+                daemon=False,
+            )
+            self.assertIn('RuntimeError', err)
+
+
+class ThreadingExceptionTests(BaseTestCase):
+    # A RuntimeError should be raised if Thread.start() is called
+    # multiple times.
+    def test_start_thread_again(self):
+        thread = threading.Thread()
+        thread.start()
+        self.assertRaises(RuntimeError, thread.start)
+        thread.join()
+
+    def test_joining_current_thread(self):
+        current_thread = threading.current_thread()
+        self.assertRaises(RuntimeError, current_thread.join);
+
+    def test_joining_inactive_thread(self):
+        thread = threading.Thread()
+        self.assertRaises(RuntimeError, thread.join)
+
+    def test_daemonize_active_thread(self):
+        thread = threading.Thread()
+        thread.start()
+        self.assertRaises(RuntimeError, setattr, thread, "daemon", True)
+        thread.join()
+
+    def test_releasing_unacquired_lock(self):
+        lock = threading.Lock()
+        self.assertRaises(RuntimeError, lock.release)
+
+    @requires_subprocess()
+    def test_recursion_limit(self):
+        # Issue 9670
+        # test that excessive recursion within a non-main thread causes
+        # an exception rather than crashing the interpreter on platforms
+        # like Mac OS X or FreeBSD which have small default stack sizes
+        # for threads
+        script = """if True:
+            import threading
+
+            def recurse():
+                return recurse()
+
+            def outer():
+                try:
+                    recurse()
+                except RecursionError:
+                    pass
+
+            w = threading.Thread(target=outer)
+            w.start()
+            w.join()
+            print('end of main thread')
+            """
+        expected_output = "end of main thread\n"
+        p = subprocess.Popen([sys.executable, "-c", script],
+                             stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        stdout, stderr = p.communicate()
+        data = stdout.decode().replace('\r', '')
+        self.assertEqual(p.returncode, 0, "Unexpected error: " + stderr.decode())
+        self.assertEqual(data, expected_output)
+
+    def test_print_exception(self):
+        script = r"""if True:
+            import threading
+            import time
+
+            running = False
+            def run():
+                global running
+                running = True
+                while running:
+                    time.sleep(0.01)
+                1/0
+            t = threading.Thread(target=run)
+            t.start()
+            while not running:
+                time.sleep(0.01)
+            running = False
+            t.join()
+            """
+        rc, out, err = assert_python_ok("-c", script)
+        self.assertEqual(out, b'')
+        err = err.decode()
+        self.assertIn("Exception in thread", err)
+        self.assertIn("Traceback (most recent call last):", err)
+        self.assertIn("ZeroDivisionError", err)
+        self.assertNotIn("Unhandled exception", err)
+
+    def test_print_exception_stderr_is_none_1(self):
+        script = r"""if True:
+            import sys
+            import threading
+            import time
+
+            running = False
+            def run():
+                global running
+                running = True
+                while running:
+                    time.sleep(0.01)
+                1/0
+            t = threading.Thread(target=run)
+            t.start()
+            while not running:
+                time.sleep(0.01)
+            sys.stderr = None
+            running = False
+            t.join()
+            """
+        rc, out, err = assert_python_ok("-c", script)
+        self.assertEqual(out, b'')
+        err = err.decode()
+        self.assertIn("Exception in thread", err)
+        self.assertIn("Traceback (most recent call last):", err)
+        self.assertIn("ZeroDivisionError", err)
+        self.assertNotIn("Unhandled exception", err)
+
+    def test_print_exception_stderr_is_none_2(self):
+        script = r"""if True:
+            import sys
+            import threading
+            import time
+
+            running = False
+            def run():
+                global running
+                running = True
+                while running:
+                    time.sleep(0.01)
+                1/0
+            sys.stderr = None
+            t = threading.Thread(target=run)
+            t.start()
+            while not running:
+                time.sleep(0.01)
+            running = False
+            t.join()
+            """
+        rc, out, err = assert_python_ok("-c", script)
+        self.assertEqual(out, b'')
+        self.assertNotIn("Unhandled exception", err.decode())
+
+    def test_print_exception_gh_102056(self):
+        # This used to crash. See gh-102056.
+        script = r"""if True:
+            import time
+            import threading
+            import _thread
+
+            def f():
+                try:
+                    f()
+                except RecursionError:
+                    f()
+
+            def g():
+                try:
+                    raise ValueError()
+                except* ValueError:
+                    f()
+
+            def h():
+                time.sleep(1)
+                _thread.interrupt_main()
+
+            t = threading.Thread(target=h)
+            t.start()
+            g()
+            t.join()
+            """
+
+        assert_python_failure("-c", script)
+
+    def test_bare_raise_in_brand_new_thread(self):
+        def bare_raise():
+            raise
+
+        class Issue27558(threading.Thread):
+            exc = None
+
+            def run(self):
+                try:
+                    bare_raise()
+                except Exception as exc:
+                    self.exc = exc
+
+        thread = Issue27558()
+        thread.start()
+        thread.join()
+        self.assertIsNotNone(thread.exc)
+        self.assertIsInstance(thread.exc, RuntimeError)
+        # explicitly break the reference cycle to not leak a dangling thread
+        thread.exc = None
+
+    def test_multithread_modify_file_noerror(self):
+        # See issue25872
+        def modify_file():
+            with open(os_helper.TESTFN, 'w', encoding='utf-8') as fp:
+                fp.write(' ')
+                traceback.format_stack()
+
+        self.addCleanup(os_helper.unlink, os_helper.TESTFN)
+        threads = [
+            threading.Thread(target=modify_file)
+            for i in range(100)
+        ]
+        for t in threads:
+            t.start()
+            t.join()
+
+
+class ThreadRunFail(threading.Thread):
+    def run(self):
+        raise ValueError("run failed")
+
+
+class ExceptHookTests(BaseTestCase):
+    def setUp(self):
+        restore_default_excepthook(self)
+        super().setUp()
+
+    def test_excepthook(self):
+        with support.captured_output("stderr") as stderr:
+            thread = ThreadRunFail(name="excepthook thread")
+            thread.start()
+            thread.join()
+
+        stderr = stderr.getvalue().strip()
+        self.assertIn(f'Exception in thread {thread.name}:\n', stderr)
+        self.assertIn('Traceback (most recent call last):\n', stderr)
+        self.assertIn('  raise ValueError("run failed")', stderr)
+        self.assertIn('ValueError: run failed', stderr)
+
+    @support.cpython_only
+    def test_excepthook_thread_None(self):
+        # threading.excepthook called with thread=None: log the thread
+        # identifier in this case.
+        with support.captured_output("stderr") as stderr:
+            try:
+                raise ValueError("bug")
+            except Exception as exc:
+                args = threading.ExceptHookArgs([*sys.exc_info(), None])
+                try:
+                    threading.excepthook(args)
+                finally:
+                    # Explicitly break a reference cycle
+                    args = None
+
+        stderr = stderr.getvalue().strip()
+        self.assertIn(f'Exception in thread {threading.get_ident()}:\n', stderr)
+        self.assertIn('Traceback (most recent call last):\n', stderr)
+        self.assertIn('  raise ValueError("bug")', stderr)
+        self.assertIn('ValueError: bug', stderr)
+
+    def test_system_exit(self):
+        class ThreadExit(threading.Thread):
+            def run(self):
+                sys.exit(1)
+
+        # threading.excepthook() silently ignores SystemExit
+        with support.captured_output("stderr") as stderr:
+            thread = ThreadExit()
+            thread.start()
+            thread.join()
+
+        self.assertEqual(stderr.getvalue(), '')
+
+    def test_custom_excepthook(self):
+        args = None
+
+        def hook(hook_args):
+            nonlocal args
+            args = hook_args
+
+        try:
+            with support.swap_attr(threading, 'excepthook', hook):
+                thread = ThreadRunFail()
+                thread.start()
+                thread.join()
+
+            self.assertEqual(args.exc_type, ValueError)
+            self.assertEqual(str(args.exc_value), 'run failed')
+            self.assertEqual(args.exc_traceback, args.exc_value.__traceback__)
+            self.assertIs(args.thread, thread)
+        finally:
+            # Break reference cycle
+            args = None
+
+    def test_custom_excepthook_fail(self):
+        def threading_hook(args):
+            raise ValueError("threading_hook failed")
+
+        err_str = None
+
+        def sys_hook(exc_type, exc_value, exc_traceback):
+            nonlocal err_str
+            err_str = str(exc_value)
+
+        with support.swap_attr(threading, 'excepthook', threading_hook), \
+             support.swap_attr(sys, 'excepthook', sys_hook), \
+             support.captured_output('stderr') as stderr:
+            thread = ThreadRunFail()
+            thread.start()
+            thread.join()
+
+        self.assertEqual(stderr.getvalue(),
+                         'Exception in threading.excepthook:\n')
+        self.assertEqual(err_str, 'threading_hook failed')
+
+    def test_original_excepthook(self):
+        def run_thread():
+            with support.captured_output("stderr") as output:
+                thread = ThreadRunFail(name="excepthook thread")
+                thread.start()
+                thread.join()
+            return output.getvalue()
+
+        def threading_hook(args):
+            print("Running a thread failed", file=sys.stderr)
+
+        default_output = run_thread()
+        with support.swap_attr(threading, 'excepthook', threading_hook):
+            custom_hook_output = run_thread()
+            threading.excepthook = threading.__excepthook__
+            recovered_output = run_thread()
+
+        self.assertEqual(default_output, recovered_output)
+        self.assertNotEqual(default_output, custom_hook_output)
+        self.assertEqual(custom_hook_output, "Running a thread failed\n")
+
+
+class TimerTests(BaseTestCase):
+
+    def setUp(self):
+        BaseTestCase.setUp(self)
+        self.callback_args = []
+        self.callback_event = threading.Event()
+
+    def test_init_immutable_default_args(self):
+        # Issue 17435: constructor defaults were mutable objects, they could be
+        # mutated via the object attributes and affect other Timer objects.
+        timer1 = threading.Timer(0.01, self._callback_spy)
+        timer1.start()
+        self.callback_event.wait()
+        timer1.args.append("blah")
+        timer1.kwargs["foo"] = "bar"
+        self.callback_event.clear()
+        timer2 = threading.Timer(0.01, self._callback_spy)
+        timer2.start()
+        self.callback_event.wait()
+        self.assertEqual(len(self.callback_args), 2)
+        self.assertEqual(self.callback_args, [((), {}), ((), {})])
+        timer1.join()
+        timer2.join()
+
+    def _callback_spy(self, *args, **kwargs):
+        self.callback_args.append((args[:], kwargs.copy()))
+        self.callback_event.set()
+
+class LockTests(lock_tests.LockTests):
+    locktype = staticmethod(threading.Lock)
+
+class PyRLockTests(lock_tests.RLockTests):
+    locktype = staticmethod(threading._PyRLock)
+
+@unittest.skipIf(threading._CRLock is None, 'RLock not implemented in C')
+class CRLockTests(lock_tests.RLockTests):
+    locktype = staticmethod(threading._CRLock)
+
+class EventTests(lock_tests.EventTests):
+    eventtype = staticmethod(threading.Event)
+
+class ConditionAsRLockTests(lock_tests.RLockTests):
+    # Condition uses an RLock by default and exports its API.
+    locktype = staticmethod(threading.Condition)
+
+class ConditionTests(lock_tests.ConditionTests):
+    condtype = staticmethod(threading.Condition)
+
+class SemaphoreTests(lock_tests.SemaphoreTests):
+    semtype = staticmethod(threading.Semaphore)
+
+class BoundedSemaphoreTests(lock_tests.BoundedSemaphoreTests):
+    semtype = staticmethod(threading.BoundedSemaphore)
+
+class BarrierTests(lock_tests.BarrierTests):
+    barriertype = staticmethod(threading.Barrier)
+
+
+class MiscTestCase(unittest.TestCase):
+    def test__all__(self):
+        restore_default_excepthook(self)
+
+        extra = {"ThreadError"}
+        not_exported = {'currentThread', 'activeCount'}
+        support.check__all__(self, threading, ('threading', '_thread'),
+                             extra=extra, not_exported=not_exported)
+
+
+class InterruptMainTests(unittest.TestCase):
+    def check_interrupt_main_with_signal_handler(self, signum):
+        def handler(signum, frame):
+            1/0
+
+        old_handler = signal.signal(signum, handler)
+        self.addCleanup(signal.signal, signum, old_handler)
+
+        with self.assertRaises(ZeroDivisionError):
+            _thread.interrupt_main()
+
+    def check_interrupt_main_noerror(self, signum):
+        handler = signal.getsignal(signum)
+        try:
+            # No exception should arise.
+            signal.signal(signum, signal.SIG_IGN)
+            _thread.interrupt_main(signum)
+
+            signal.signal(signum, signal.SIG_DFL)
+            _thread.interrupt_main(signum)
+        finally:
+            # Restore original handler
+            signal.signal(signum, handler)
+
+    def test_interrupt_main_subthread(self):
+        # Calling start_new_thread with a function that executes interrupt_main
+        # should raise KeyboardInterrupt upon completion.
+        def call_interrupt():
+            _thread.interrupt_main()
+        t = threading.Thread(target=call_interrupt)
+        with self.assertRaises(KeyboardInterrupt):
+            t.start()
+            t.join()
+        t.join()
+
+    def test_interrupt_main_mainthread(self):
+        # Make sure that if interrupt_main is called in main thread that
+        # KeyboardInterrupt is raised instantly.
+        with self.assertRaises(KeyboardInterrupt):
+            _thread.interrupt_main()
+
+    def test_interrupt_main_with_signal_handler(self):
+        self.check_interrupt_main_with_signal_handler(signal.SIGINT)
+        self.check_interrupt_main_with_signal_handler(signal.SIGTERM)
+
+    def test_interrupt_main_noerror(self):
+        self.check_interrupt_main_noerror(signal.SIGINT)
+        self.check_interrupt_main_noerror(signal.SIGTERM)
+
+    def test_interrupt_main_invalid_signal(self):
+        self.assertRaises(ValueError, _thread.interrupt_main, -1)
+        self.assertRaises(ValueError, _thread.interrupt_main, signal.NSIG)
+        self.assertRaises(ValueError, _thread.interrupt_main, 1000000)
+
+    @threading_helper.reap_threads
+    def test_can_interrupt_tight_loops(self):
+        cont = [True]
+        started = [False]
+        interrupted = [False]
+
+        def worker(started, cont, interrupted):
+            iterations = 100_000_000
+            started[0] = True
+            while cont[0]:
+                if iterations:
+                    iterations -= 1
+                else:
+                    return
+                pass
+            interrupted[0] = True
+
+        t = threading.Thread(target=worker,args=(started, cont, interrupted))
+        t.start()
+        while not started[0]:
+            pass
+        cont[0] = False
+        t.join()
+        self.assertTrue(interrupted[0])
+
+
+class AtexitTests(unittest.TestCase):
+
+    def test_atexit_output(self):
+        rc, out, err = assert_python_ok("-c", """if True:
+            import threading
+
+            def run_last():
+                print('parrot')
+
+            threading._register_atexit(run_last)
+        """)
+
+        self.assertFalse(err)
+        self.assertEqual(out.strip(), b'parrot')
+
+    def test_atexit_called_once(self):
+        rc, out, err = assert_python_ok("-c", """if True:
+            import threading
+            from unittest.mock import Mock
+
+            mock = Mock()
+            threading._register_atexit(mock)
+            mock.assert_not_called()
+            # force early shutdown to ensure it was called once
+            threading._shutdown()
+            mock.assert_called_once()
+        """)
+
+        self.assertFalse(err)
+
+    def test_atexit_after_shutdown(self):
+        # The only way to do this is by registering an atexit within
+        # an atexit, which is intended to raise an exception.
+        rc, out, err = assert_python_ok("-c", """if True:
+            import threading
+
+            def func():
+                pass
+
+            def run_last():
+                threading._register_atexit(func)
+
+            threading._register_atexit(run_last)
+        """)
+
+        self.assertTrue(err)
+        self.assertIn("RuntimeError: can't register atexit after shutdown",
+                err.decode())
+
+
+if __name__ == "__main__":
+    unittest.main()

src/greentest/3.12/test_wsgiref.py

+from unittest import mock
+from test import support
+from test.support import socket_helper
+from test.test_httpservers import NoLogRequestHandler
+from unittest import TestCase
+from wsgiref.util import setup_testing_defaults
+from wsgiref.headers import Headers
+from wsgiref.handlers import BaseHandler, BaseCGIHandler, SimpleHandler
+from wsgiref import util
+from wsgiref.validate import validator
+from wsgiref.simple_server import WSGIServer, WSGIRequestHandler
+from wsgiref.simple_server import make_server
+from http.client import HTTPConnection
+from io import StringIO, BytesIO, BufferedReader
+from socketserver import BaseServer
+from platform import python_implementation
+
+import os
+import re
+import signal
+import sys
+import threading
+import unittest
+
+
+class MockServer(WSGIServer):
+    """Non-socket HTTP server"""
+
+    def __init__(self, server_address, RequestHandlerClass):
+        BaseServer.__init__(self, server_address, RequestHandlerClass)
+        self.server_bind()
+
+    def server_bind(self):
+        host, port = self.server_address
+        self.server_name = host
+        self.server_port = port
+        self.setup_environ()
+
+
+class MockHandler(WSGIRequestHandler):
+    """Non-socket HTTP handler"""
+    def setup(self):
+        self.connection = self.request
+        self.rfile, self.wfile = self.connection
+
+    def finish(self):
+        pass
+
+
+def hello_app(environ,start_response):
+    start_response("200 OK", [
+        ('Content-Type','text/plain'),
+        ('Date','Mon, 05 Jun 2006 18:49:54 GMT')
+    ])
+    return [b"Hello, world!"]
+
+
+def header_app(environ, start_response):
+    start_response("200 OK", [
+        ('Content-Type', 'text/plain'),
+        ('Date', 'Mon, 05 Jun 2006 18:49:54 GMT')
+    ])
+    return [';'.join([
+        environ['HTTP_X_TEST_HEADER'], environ['QUERY_STRING'],
+        environ['PATH_INFO']
+    ]).encode('iso-8859-1')]
+
+
+def run_amock(app=hello_app, data=b"GET / HTTP/1.0\n\n"):
+    server = make_server("", 80, app, MockServer, MockHandler)
+    inp = BufferedReader(BytesIO(data))
+    out = BytesIO()
+    olderr = sys.stderr
+    err = sys.stderr = StringIO()
+
+    try:
+        server.finish_request((inp, out), ("127.0.0.1",8888))
+    finally:
+        sys.stderr = olderr
+
+    return out.getvalue(), err.getvalue()
+
+
+def compare_generic_iter(make_it, match):
+    """Utility to compare a generic iterator with an iterable
+
+    This tests the iterator using iter()/next().
+    'make_it' must be a function returning a fresh
+    iterator to be tested (since this may test the iterator twice)."""
+
+    it = make_it()
+    if not iter(it) is it:
+        raise AssertionError
+    for item in match:
+        if not next(it) == item:
+            raise AssertionError
+    try:
+        next(it)
+    except StopIteration:
+        pass
+    else:
+        raise AssertionError("Too many items from .__next__()", it)
+
+
+class IntegrationTests(TestCase):
+
+    def check_hello(self, out, has_length=True):
+        pyver = (python_implementation() + "/" +
+                sys.version.split()[0])
+        self.assertEqual(out,
+            ("HTTP/1.0 200 OK\r\n"
+            "Server: WSGIServer/0.2 " + pyver +"\r\n"
+            "Content-Type: text/plain\r\n"
+            "Date: Mon, 05 Jun 2006 18:49:54 GMT\r\n" +
+            (has_length and  "Content-Length: 13\r\n" or "") +
+            "\r\n"
+            "Hello, world!").encode("iso-8859-1")
+        )
+
+    def test_plain_hello(self):
+        out, err = run_amock()
+        self.check_hello(out)
+
+    def test_environ(self):
+        request = (
+            b"GET /p%61th/?query=test HTTP/1.0\n"
+            b"X-Test-Header: Python test \n"
+            b"X-Test-Header: Python test 2\n"
+            b"Content-Length: 0\n\n"
+        )
+        out, err = run_amock(header_app, request)
+        self.assertEqual(
+            out.splitlines()[-1],
+            b"Python test,Python test 2;query=test;/path/"
+        )
+
+    def test_request_length(self):
+        out, err = run_amock(data=b"GET " + (b"x" * 65537) + b" HTTP/1.0\n\n")
+        self.assertEqual(out.splitlines()[0],
+                         b"HTTP/1.0 414 Request-URI Too Long")
+
+    def test_validated_hello(self):
+        out, err = run_amock(validator(hello_app))
+        # the middleware doesn't support len(), so content-length isn't there
+        self.check_hello(out, has_length=False)
+
+    def test_simple_validation_error(self):
+        def bad_app(environ,start_response):
+            start_response("200 OK", ('Content-Type','text/plain'))
+            return ["Hello, world!"]
+        out, err = run_amock(validator(bad_app))
+        self.assertTrue(out.endswith(
+            b"A server error occurred.  Please contact the administrator."
+        ))
+        self.assertEqual(
+            err.splitlines()[-2],
+            "AssertionError: Headers (('Content-Type', 'text/plain')) must"
+            " be of type list: <class 'tuple'>"
+        )
+
+    def test_status_validation_errors(self):
+        def create_bad_app(status):
+            def bad_app(environ, start_response):
+                start_response(status, [("Content-Type", "text/plain; charset=utf-8")])
+                return [b"Hello, world!"]
+            return bad_app
+
+        tests = [
+            ('200', 'AssertionError: Status must be at least 4 characters'),
+            ('20X OK', 'AssertionError: Status message must begin w/3-digit code'),
+            ('200OK', 'AssertionError: Status message must have a space after code'),
+        ]
+
+        for status, exc_message in tests:
+            with self.subTest(status=status):
+                out, err = run_amock(create_bad_app(status))
+                self.assertTrue(out.endswith(
+                    b"A server error occurred.  Please contact the administrator."
+                ))
+                self.assertEqual(err.splitlines()[-2], exc_message)
+
+    def test_wsgi_input(self):
+        def bad_app(e,s):
+            e["wsgi.input"].read()
+            s("200 OK", [("Content-Type", "text/plain; charset=utf-8")])
+            return [b"data"]
+        out, err = run_amock(validator(bad_app))
+        self.assertTrue(out.endswith(
+            b"A server error occurred.  Please contact the administrator."
+        ))
+        self.assertEqual(
+            err.splitlines()[-2], "AssertionError"
+        )
+
+    def test_bytes_validation(self):
+        def app(e, s):
+            s("200 OK", [
+                ("Content-Type", "text/plain; charset=utf-8"),
+                ("Date", "Wed, 24 Dec 2008 13:29:32 GMT"),
+                ])
+            return [b"data"]
+        out, err = run_amock(validator(app))
+        self.assertTrue(err.endswith('"GET / HTTP/1.0" 200 4\n'))
+        ver = sys.version.split()[0].encode('ascii')
+        py  = python_implementation().encode('ascii')
+        pyver = py + b"/" + ver
+        self.assertEqual(
+                b"HTTP/1.0 200 OK\r\n"
+                b"Server: WSGIServer/0.2 "+ pyver + b"\r\n"
+                b"Content-Type: text/plain; charset=utf-8\r\n"
+                b"Date: Wed, 24 Dec 2008 13:29:32 GMT\r\n"
+                b"\r\n"
+                b"data",
+                out)
+
+    def test_cp1252_url(self):
+        def app(e, s):
+            s("200 OK", [
+                ("Content-Type", "text/plain"),
+                ("Date", "Wed, 24 Dec 2008 13:29:32 GMT"),
+                ])
+            # PEP3333 says environ variables are decoded as latin1.
+            # Encode as latin1 to get original bytes
+            return [e["PATH_INFO"].encode("latin1")]
+
+        out, err = run_amock(
+            validator(app), data=b"GET /\x80%80 HTTP/1.0")
+        self.assertEqual(
+            [
+                b"HTTP/1.0 200 OK",
+                mock.ANY,
+                b"Content-Type: text/plain",
+                b"Date: Wed, 24 Dec 2008 13:29:32 GMT",
+                b"",
+                b"/\x80\x80",
+            ],
+            out.splitlines())
+
+    def test_interrupted_write(self):
+        # BaseHandler._write() and _flush() have to write all data, even if
+        # it takes multiple send() calls.  Test this by interrupting a send()
+        # call with a Unix signal.
+        pthread_kill = support.get_attribute(signal, "pthread_kill")
+
+        def app(environ, start_response):
+            start_response("200 OK", [])
+            return [b'\0' * support.SOCK_MAX_SIZE]
+
+        class WsgiHandler(NoLogRequestHandler, WSGIRequestHandler):
+            pass
+
+        server = make_server(socket_helper.HOST, 0, app, handler_class=WsgiHandler)
+        self.addCleanup(server.server_close)
+        interrupted = threading.Event()
+
+        def signal_handler(signum, frame):
+            interrupted.set()
+
+        original = signal.signal(signal.SIGUSR1, signal_handler)
+        self.addCleanup(signal.signal, signal.SIGUSR1, original)
+        received = None
+        main_thread = threading.get_ident()
+
+        def run_client():
+            http = HTTPConnection(*server.server_address)
+            http.request("GET", "/")
+            with http.getresponse() as response:
+                response.read(100)
+                # The main thread should now be blocking in a send() system
+                # call.  But in theory, it could get interrupted by other
+                # signals, and then retried.  So keep sending the signal in a
+                # loop, in case an earlier signal happens to be delivered at
+                # an inconvenient moment.
+                while True:
+                    pthread_kill(main_thread, signal.SIGUSR1)
+                    if interrupted.wait(timeout=float(1)):
+                        break
+                nonlocal received
+                received = len(response.read())
+            http.close()
+
+        background = threading.Thread(target=run_client)
+        background.start()
+        server.handle_request()
+        background.join()
+        self.assertEqual(received, support.SOCK_MAX_SIZE - 100)
+
+
+class UtilityTests(TestCase):
+
+    def checkShift(self,sn_in,pi_in,part,sn_out,pi_out):
+        env = {'SCRIPT_NAME':sn_in,'PATH_INFO':pi_in}
+        util.setup_testing_defaults(env)
+        self.assertEqual(util.shift_path_info(env),part)
+        self.assertEqual(env['PATH_INFO'],pi_out)
+        self.assertEqual(env['SCRIPT_NAME'],sn_out)
+        return env
+
+    def checkDefault(self, key, value, alt=None):
+        # Check defaulting when empty
+        env = {}
+        util.setup_testing_defaults(env)
+        if isinstance(value, StringIO):
+            self.assertIsInstance(env[key], StringIO)
+        elif isinstance(value,BytesIO):
+            self.assertIsInstance(env[key],BytesIO)
+        else:
+            self.assertEqual(env[key], value)
+
+        # Check existing value
+        env = {key:alt}
+        util.setup_testing_defaults(env)
+        self.assertIs(env[key], alt)
+
+    def checkCrossDefault(self,key,value,**kw):
+        util.setup_testing_defaults(kw)
+        self.assertEqual(kw[key],value)
+
+    def checkAppURI(self,uri,**kw):
+        util.setup_testing_defaults(kw)
+        self.assertEqual(util.application_uri(kw),uri)
+
+    def checkReqURI(self,uri,query=1,**kw):
+        util.setup_testing_defaults(kw)
+        self.assertEqual(util.request_uri(kw,query),uri)
+
+    def checkFW(self,text,size,match):
+
+        def make_it(text=text,size=size):
+            return util.FileWrapper(StringIO(text),size)
+
+        compare_generic_iter(make_it,match)
+
+        it = make_it()
+        self.assertFalse(it.filelike.closed)
+
+        for item in it:
+            pass
+
+        self.assertFalse(it.filelike.closed)
+
+        it.close()
+        self.assertTrue(it.filelike.closed)
+
+    def testSimpleShifts(self):
+        self.checkShift('','/', '', '/', '')
+        self.checkShift('','/x', 'x', '/x', '')
+        self.checkShift('/','', None, '/', '')
+        self.checkShift('/a','/x/y', 'x', '/a/x', '/y')
+        self.checkShift('/a','/x/',  'x', '/a/x', '/')
+
+    def testNormalizedShifts(self):
+        self.checkShift('/a/b', '/../y', '..', '/a', '/y')
+        self.checkShift('', '/../y', '..', '', '/y')
+        self.checkShift('/a/b', '//y', 'y', '/a/b/y', '')
+        self.checkShift('/a/b', '//y/', 'y', '/a/b/y', '/')
+        self.checkShift('/a/b', '/./y', 'y', '/a/b/y', '')
+        self.checkShift('/a/b', '/./y/', 'y', '/a/b/y', '/')
+        self.checkShift('/a/b', '///./..//y/.//', '..', '/a', '/y/')
+        self.checkShift('/a/b', '///', '', '/a/b/', '')
+        self.checkShift('/a/b', '/.//', '', '/a/b/', '')
+        self.checkShift('/a/b', '/x//', 'x', '/a/b/x', '/')
+        self.checkShift('/a/b', '/.', None, '/a/b', '')
+
+    def testDefaults(self):
+        for key, value in [
+            ('SERVER_NAME','127.0.0.1'),
+            ('SERVER_PORT', '80'),
+            ('SERVER_PROTOCOL','HTTP/1.0'),
+            ('HTTP_HOST','127.0.0.1'),
+            ('REQUEST_METHOD','GET'),
+            ('SCRIPT_NAME',''),
+            ('PATH_INFO','/'),
+            ('wsgi.version', (1,0)),
+            ('wsgi.run_once', 0),
+            ('wsgi.multithread', 0),
+            ('wsgi.multiprocess', 0),
+            ('wsgi.input', BytesIO()),
+            ('wsgi.errors', StringIO()),
+            ('wsgi.url_scheme','http'),
+        ]:
+            self.checkDefault(key,value)
+
+    def testCrossDefaults(self):
+        self.checkCrossDefault('HTTP_HOST',"foo.bar",SERVER_NAME="foo.bar")
+        self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="on")
+        self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="1")
+        self.checkCrossDefault('wsgi.url_scheme',"https",HTTPS="yes")
+        self.checkCrossDefault('wsgi.url_scheme',"http",HTTPS="foo")
+        self.checkCrossDefault('SERVER_PORT',"80",HTTPS="foo")
+        self.checkCrossDefault('SERVER_PORT',"443",HTTPS="on")
+
+    def testGuessScheme(self):
+        self.assertEqual(util.guess_scheme({}), "http")
+        self.assertEqual(util.guess_scheme({'HTTPS':"foo"}), "http")
+        self.assertEqual(util.guess_scheme({'HTTPS':"on"}), "https")
+        self.assertEqual(util.guess_scheme({'HTTPS':"yes"}), "https")
+        self.assertEqual(util.guess_scheme({'HTTPS':"1"}), "https")
+
+    def testAppURIs(self):
+        self.checkAppURI("http://127.0.0.1/")
+        self.checkAppURI("http://127.0.0.1/spam", SCRIPT_NAME="/spam")
+        self.checkAppURI("http://127.0.0.1/sp%E4m", SCRIPT_NAME="/sp\xe4m")
+        self.checkAppURI("http://spam.example.com:2071/",
+            HTTP_HOST="spam.example.com:2071", SERVER_PORT="2071")
+        self.checkAppURI("http://spam.example.com/",
+            SERVER_NAME="spam.example.com")
+        self.checkAppURI("http://127.0.0.1/",
+            HTTP_HOST="127.0.0.1", SERVER_NAME="spam.example.com")
+        self.checkAppURI("https://127.0.0.1/", HTTPS="on")
+        self.checkAppURI("http://127.0.0.1:8000/", SERVER_PORT="8000",
+            HTTP_HOST=None)
+
+    def testReqURIs(self):
+        self.checkReqURI("http://127.0.0.1/")
+        self.checkReqURI("http://127.0.0.1/spam", SCRIPT_NAME="/spam")
+        self.checkReqURI("http://127.0.0.1/sp%E4m", SCRIPT_NAME="/sp\xe4m")
+        self.checkReqURI("http://127.0.0.1/spammity/spam",
+            SCRIPT_NAME="/spammity", PATH_INFO="/spam")
+        self.checkReqURI("http://127.0.0.1/spammity/sp%E4m",
+            SCRIPT_NAME="/spammity", PATH_INFO="/sp\xe4m")
+        self.checkReqURI("http://127.0.0.1/spammity/spam;ham",
+            SCRIPT_NAME="/spammity", PATH_INFO="/spam;ham")
+        self.checkReqURI("http://127.0.0.1/spammity/spam;cookie=1234,5678",
+            SCRIPT_NAME="/spammity", PATH_INFO="/spam;cookie=1234,5678")
+        self.checkReqURI("http://127.0.0.1/spammity/spam?say=ni",
+            SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="say=ni")
+        self.checkReqURI("http://127.0.0.1/spammity/spam?s%E4y=ni",
+            SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="s%E4y=ni")
+        self.checkReqURI("http://127.0.0.1/spammity/spam", 0,
+            SCRIPT_NAME="/spammity", PATH_INFO="/spam",QUERY_STRING="say=ni")
+
+    def testFileWrapper(self):
+        self.checkFW("xyz"*50, 120, ["xyz"*40,"xyz"*10])
+
+    def testHopByHop(self):
+        for hop in (
+            "Connection Keep-Alive Proxy-Authenticate Proxy-Authorization "
+            "TE Trailers Transfer-Encoding Upgrade"
+        ).split():
+            for alt in hop, hop.title(), hop.upper(), hop.lower():
+                self.assertTrue(util.is_hop_by_hop(alt))
+
+        # Not comprehensive, just a few random header names
+        for hop in (
+            "Accept Cache-Control Date Pragma Trailer Via Warning"
+        ).split():
+            for alt in hop, hop.title(), hop.upper(), hop.lower():
+                self.assertFalse(util.is_hop_by_hop(alt))
+
+class HeaderTests(TestCase):
+
+    def testMappingInterface(self):
+        test = [('x','y')]
+        self.assertEqual(len(Headers()), 0)
+        self.assertEqual(len(Headers([])),0)
+        self.assertEqual(len(Headers(test[:])),1)
+        self.assertEqual(Headers(test[:]).keys(), ['x'])
+        self.assertEqual(Headers(test[:]).values(), ['y'])
+        self.assertEqual(Headers(test[:]).items(), test)
+        self.assertIsNot(Headers(test).items(), test)  # must be copy!
+
+        h = Headers()
+        del h['foo']   # should not raise an error
+
+        h['Foo'] = 'bar'
+        for m in h.__contains__, h.get, h.get_all, h.__getitem__:
+            self.assertTrue(m('foo'))
+            self.assertTrue(m('Foo'))
+            self.assertTrue(m('FOO'))
+            self.assertFalse(m('bar'))
+
+        self.assertEqual(h['foo'],'bar')
+        h['foo'] = 'baz'
+        self.assertEqual(h['FOO'],'baz')
+        self.assertEqual(h.get_all('foo'),['baz'])
+
+        self.assertEqual(h.get("foo","whee"), "baz")
+        self.assertEqual(h.get("zoo","whee"), "whee")
+        self.assertEqual(h.setdefault("foo","whee"), "baz")
+        self.assertEqual(h.setdefault("zoo","whee"), "whee")
+        self.assertEqual(h["foo"],"baz")
+        self.assertEqual(h["zoo"],"whee")
+
+    def testRequireList(self):
+        self.assertRaises(TypeError, Headers, "foo")
+
+    def testExtras(self):
+        h = Headers()
+        self.assertEqual(str(h),'\r\n')
+
+        h.add_header('foo','bar',baz="spam")
+        self.assertEqual(h['foo'], 'bar; baz="spam"')
+        self.assertEqual(str(h),'foo: bar; baz="spam"\r\n\r\n')
+
+        h.add_header('Foo','bar',cheese=None)
+        self.assertEqual(h.get_all('foo'),
+            ['bar; baz="spam"', 'bar; cheese'])
+
+        self.assertEqual(str(h),
+            'foo: bar; baz="spam"\r\n'
+            'Foo: bar; cheese\r\n'
+            '\r\n'
+        )
+
+class ErrorHandler(BaseCGIHandler):
+    """Simple handler subclass for testing BaseHandler"""
+
+    # BaseHandler records the OS environment at import time, but envvars
+    # might have been changed later by other tests, which trips up
+    # HandlerTests.testEnviron().
+    os_environ = dict(os.environ.items())
+
+    def __init__(self,**kw):
+        setup_testing_defaults(kw)
+        BaseCGIHandler.__init__(
+            self, BytesIO(), BytesIO(), StringIO(), kw,
+            multithread=True, multiprocess=True
+        )
+
+class TestHandler(ErrorHandler):
+    """Simple handler subclass for testing BaseHandler, w/error passthru"""
+
+    def handle_error(self):
+        raise   # for testing, we want to see what's happening
+
+
+class HandlerTests(TestCase):
+    # testEnviron() can produce long error message
+    maxDiff = 80 * 50
+
+    def testEnviron(self):
+        os_environ = {
+            # very basic environment
+            'HOME': '/my/home',
+            'PATH': '/my/path',
+            'LANG': 'fr_FR.UTF-8',
+
+            # set some WSGI variables
+            'SCRIPT_NAME': 'test_script_name',
+            'SERVER_NAME': 'test_server_name',
+        }
+
+        with support.swap_attr(TestHandler, 'os_environ', os_environ):
+            # override X and HOME variables
+            handler = TestHandler(X="Y", HOME="/override/home")
+            handler.setup_environ()
+
+        # Check that wsgi_xxx attributes are copied to wsgi.xxx variables
+        # of handler.environ
+        for attr in ('version', 'multithread', 'multiprocess', 'run_once',
+                     'file_wrapper'):
+            self.assertEqual(getattr(handler, 'wsgi_' + attr),
+                             handler.environ['wsgi.' + attr])
+
+        # Test handler.environ as a dict
+        expected = {}
+        setup_testing_defaults(expected)
+        # Handler inherits os_environ variables which are not overridden
+        # by SimpleHandler.add_cgi_vars() (SimpleHandler.base_env)
+        for key, value in os_environ.items():
+            if key not in expected:
+                expected[key] = value
+        expected.update({
+            # X doesn't exist in os_environ
+            "X": "Y",
+            # HOME is overridden by TestHandler
+            'HOME': "/override/home",
+
+            # overridden by setup_testing_defaults()
+            "SCRIPT_NAME": "",
+            "SERVER_NAME": "127.0.0.1",
+
+            # set by BaseHandler.setup_environ()
+            'wsgi.input': handler.get_stdin(),
+            'wsgi.errors': handler.get_stderr(),
+            'wsgi.version': (1, 0),
+            'wsgi.run_once': False,
+            'wsgi.url_scheme': 'http',
+            'wsgi.multithread': True,
+            'wsgi.multiprocess': True,
+            'wsgi.file_wrapper': util.FileWrapper,
+        })
+        self.assertDictEqual(handler.environ, expected)
+
+    def testCGIEnviron(self):
+        h = BaseCGIHandler(None,None,None,{})
+        h.setup_environ()
+        for key in 'wsgi.url_scheme', 'wsgi.input', 'wsgi.errors':
+            self.assertIn(key, h.environ)
+
+    def testScheme(self):
+        h=TestHandler(HTTPS="on"); h.setup_environ()
+        self.assertEqual(h.environ['wsgi.url_scheme'],'https')
+        h=TestHandler(); h.setup_environ()
+        self.assertEqual(h.environ['wsgi.url_scheme'],'http')
+
+    def testAbstractMethods(self):
+        h = BaseHandler()
+        for name in [
+            '_flush','get_stdin','get_stderr','add_cgi_vars'
+        ]:
+            self.assertRaises(NotImplementedError, getattr(h,name))
+        self.assertRaises(NotImplementedError, h._write, "test")
+
+    def testContentLength(self):
+        # Demo one reason iteration is better than write()...  ;)
+
+        def trivial_app1(e,s):
+            s('200 OK',[])
+            return [e['wsgi.url_scheme'].encode('iso-8859-1')]
+
+        def trivial_app2(e,s):
+            s('200 OK',[])(e['wsgi.url_scheme'].encode('iso-8859-1'))
+            return []
+
+        def trivial_app3(e,s):
+            s('200 OK',[])
+            return ['\u0442\u0435\u0441\u0442'.encode("utf-8")]
+
+        def trivial_app4(e,s):
+            # Simulate a response to a HEAD request
+            s('200 OK',[('Content-Length', '12345')])
+            return []
+
+        h = TestHandler()
+        h.run(trivial_app1)
+        self.assertEqual(h.stdout.getvalue(),
+            ("Status: 200 OK\r\n"
+            "Content-Length: 4\r\n"
+            "\r\n"
+            "http").encode("iso-8859-1"))
+
+        h = TestHandler()
+        h.run(trivial_app2)
+        self.assertEqual(h.stdout.getvalue(),
+            ("Status: 200 OK\r\n"
+            "\r\n"
+            "http").encode("iso-8859-1"))
+
+        h = TestHandler()
+        h.run(trivial_app3)
+        self.assertEqual(h.stdout.getvalue(),
+            b'Status: 200 OK\r\n'
+            b'Content-Length: 8\r\n'
+            b'\r\n'
+            b'\xd1\x82\xd0\xb5\xd1\x81\xd1\x82')
+
+        h = TestHandler()
+        h.run(trivial_app4)
+        self.assertEqual(h.stdout.getvalue(),
+            b'Status: 200 OK\r\n'
+            b'Content-Length: 12345\r\n'
+            b'\r\n')
+
+    def testBasicErrorOutput(self):
+
+        def non_error_app(e,s):
+            s('200 OK',[])
+            return []
+
+        def error_app(e,s):
+            raise AssertionError("This should be caught by handler")
+
+        h = ErrorHandler()
+        h.run(non_error_app)
+        self.assertEqual(h.stdout.getvalue(),
+            ("Status: 200 OK\r\n"
+            "Content-Length: 0\r\n"
+            "\r\n").encode("iso-8859-1"))
+        self.assertEqual(h.stderr.getvalue(),"")
+
+        h = ErrorHandler()
+        h.run(error_app)
+        self.assertEqual(h.stdout.getvalue(),
+            ("Status: %s\r\n"
+            "Content-Type: text/plain\r\n"
+            "Content-Length: %d\r\n"
+            "\r\n" % (h.error_status,len(h.error_body))).encode('iso-8859-1')
+            + h.error_body)
+
+        self.assertIn("AssertionError", h.stderr.getvalue())
+
+    def testErrorAfterOutput(self):
+        MSG = b"Some output has been sent"
+        def error_app(e,s):
+            s("200 OK",[])(MSG)
+            raise AssertionError("This should be caught by handler")
+
+        h = ErrorHandler()
+        h.run(error_app)
+        self.assertEqual(h.stdout.getvalue(),
+            ("Status: 200 OK\r\n"
+            "\r\n".encode("iso-8859-1")+MSG))
+        self.assertIn("AssertionError", h.stderr.getvalue())
+
+    def testHeaderFormats(self):
+
+        def non_error_app(e,s):
+            s('200 OK',[])
+            return []
+
+        stdpat = (
+            r"HTTP/%s 200 OK\r\n"
+            r"Date: \w{3}, [ 0123]\d \w{3} \d{4} \d\d:\d\d:\d\d GMT\r\n"
+            r"%s" r"Content-Length: 0\r\n" r"\r\n"
+        )
+        shortpat = (
+            "Status: 200 OK\r\n" "Content-Length: 0\r\n" "\r\n"
+        ).encode("iso-8859-1")
+
+        for ssw in "FooBar/1.0", None:
+            sw = ssw and "Server: %s\r\n" % ssw or ""
+
+            for version in "1.0", "1.1":
+                for proto in "HTTP/0.9", "HTTP/1.0", "HTTP/1.1":
+
+                    h = TestHandler(SERVER_PROTOCOL=proto)
+                    h.origin_server = False
+                    h.http_version = version
+                    h.server_software = ssw
+                    h.run(non_error_app)
+                    self.assertEqual(shortpat,h.stdout.getvalue())
+
+                    h = TestHandler(SERVER_PROTOCOL=proto)
+                    h.origin_server = True
+                    h.http_version = version
+                    h.server_software = ssw
+                    h.run(non_error_app)
+                    if proto=="HTTP/0.9":
+                        self.assertEqual(h.stdout.getvalue(),b"")
+                    else:
+                        self.assertTrue(
+                            re.match((stdpat%(version,sw)).encode("iso-8859-1"),
+                                h.stdout.getvalue()),
+                            ((stdpat%(version,sw)).encode("iso-8859-1"),
+                                h.stdout.getvalue())
+                        )
+
+    def testBytesData(self):
+        def app(e, s):
+            s("200 OK", [
+                ("Content-Type", "text/plain; charset=utf-8"),
+                ])
+            return [b"data"]
+
+        h = TestHandler()
+        h.run(app)
+        self.assertEqual(b"Status: 200 OK\r\n"
+            b"Content-Type: text/plain; charset=utf-8\r\n"
+            b"Content-Length: 4\r\n"
+            b"\r\n"
+            b"data",
+            h.stdout.getvalue())
+
+    def testCloseOnError(self):
+        side_effects = {'close_called': False}
+        MSG = b"Some output has been sent"
+        def error_app(e,s):
+            s("200 OK",[])(MSG)
+            class CrashyIterable(object):
+                def __iter__(self):
+                    while True:
+                        yield b'blah'
+                        raise AssertionError("This should be caught by handler")
+                def close(self):
+                    side_effects['close_called'] = True
+            return CrashyIterable()
+
+        h = ErrorHandler()
+        h.run(error_app)
+        self.assertEqual(side_effects['close_called'], True)
+
+    def testPartialWrite(self):
+        written = bytearray()
+
+        class PartialWriter:
+            def write(self, b):
+                partial = b[:7]
+                written.extend(partial)
+                return len(partial)
+
+            def flush(self):
+                pass
+
+        environ = {"SERVER_PROTOCOL": "HTTP/1.0"}
+        h = SimpleHandler(BytesIO(), PartialWriter(), sys.stderr, environ)
+        msg = "should not do partial writes"
+        with self.assertWarnsRegex(DeprecationWarning, msg):
+            h.run(hello_app)
+        self.assertEqual(b"HTTP/1.0 200 OK\r\n"
+            b"Content-Type: text/plain\r\n"
+            b"Date: Mon, 05 Jun 2006 18:49:54 GMT\r\n"
+            b"Content-Length: 13\r\n"
+            b"\r\n"
+            b"Hello, world!",
+            written)
+
+    def testClientConnectionTerminations(self):
+        environ = {"SERVER_PROTOCOL": "HTTP/1.0"}
+        for exception in (
+            ConnectionAbortedError,
+            BrokenPipeError,
+            ConnectionResetError,
+        ):
+            with self.subTest(exception=exception):
+                class AbortingWriter:
+                    def write(self, b):
+                        raise exception
+
+                stderr = StringIO()
+                h = SimpleHandler(BytesIO(), AbortingWriter(), stderr, environ)
+                h.run(hello_app)
+
+                self.assertFalse(stderr.getvalue())
+
+    def testDontResetInternalStateOnException(self):
+        class CustomException(ValueError):
+            pass
+
+        # We are raising CustomException here to trigger an exception
+        # during the execution of SimpleHandler.finish_response(), so
+        # we can easily test that the internal state of the handler is
+        # preserved in case of an exception.
+        class AbortingWriter:
+            def write(self, b):
+                raise CustomException
+
+        stderr = StringIO()
+        environ = {"SERVER_PROTOCOL": "HTTP/1.0"}
+        h = SimpleHandler(BytesIO(), AbortingWriter(), stderr, environ)
+        h.run(hello_app)
+
+        self.assertIn("CustomException", stderr.getvalue())
+
+        # Test that the internal state of the handler is preserved.
+        self.assertIsNotNone(h.result)
+        self.assertIsNotNone(h.headers)
+        self.assertIsNotNone(h.status)
+        self.assertIsNotNone(h.environ)
+
+
+if __name__ == "__main__":
+    unittest.main()

src/greentest/3.12/version

+3.12.0b3

tox.ini

 [tox]
 envlist =
-    py38,py39,py310,py311,py311-cffi,py311-libuv,pypy3,lint,leak
+    py38,py39,py310,py311,py311-cffi,py311-libuv,py312,pypy3,lint,leak
 
 [testenv]
 usedevelop = true