test__socket_dns.py: do not raise an error when getaddrinfo raises...

test__socket_dns.py: do not raise an error when getaddrinfo raises DNSError(66, 'unknown') instead of gaierror(-5, 'No address associated with hostname')

greentest/test__socket_dns.py

@@ -8,7 +8,9 @@ from gevent.socket import *
 
 
 ACCEPTED_GAIERROR_MISMATCH = {
-    "gaierror(-5, 'No address associated with hostname')": "DNSError(3, 'name does not exist')"}
+    "gaierror(-5, 'No address associated with hostname')":
+    ("DNSError(3, 'name does not exist')", "DNSError(66, 'unknown')"),
+}
 
 assert gaierror is real_socket.gaierror
 assert error is real_socket.error
@@ -84,7 +86,7 @@ class TestCase(greentest.TestCase):
         if isinstance(a, Exception) and isinstance(b, Exception):
             if repr(a) == repr(b):
                 return True
-            if ACCEPTED_GAIERROR_MISMATCH.get(repr(a), repr(b)) == repr(b):
+            if repr(b) in ACCEPTED_GAIERROR_MISMATCH.get(repr(a), (repr(b), )):
                 return True
 
     def checkEqual(self, a, b):