Merge pull request #1511 from gevent/issue1510

Fix Popen.communicate() to raise exceptions from reading the streams. 

.travis.yml

@@ -96,6 +96,7 @@ install:
   - echo $BUILD_RUNTIMES/snakepit/$TRAVIS_PYTHON_VERSION.d
   - ls -l $BUILD_RUNTIMES/snakepit/$TRAVIS_PYTHON_VERSION.d
   - python -c 'import gevent; print(gevent.__version__)'
+  - python -c 'from gevent._compat import get_clock_info; print(get_clock_info("perf_counter"))'
 script:
   # The generic script for the matrix expansion is to
   # test the defaults.

CHANGES.rst

@@ -39,7 +39,21 @@ Library and Dependency Updates
   with debugging. The event libraries allocate small amounts of memory
   at startup. The allocation functions have to take the GIL, but
   because of the limited amount of actual allocation that gets done
-  this is not expected to be a concern.
+  this is not expected to be a bottleneck.
+
+Other
+-----
+
+- Make `gevent.subprocess.Popen.communicate` raise exceptions raised
+  by reading from the process, like the standard library. In
+  particular, under Python 3, if the process output is being decoded
+  as text, this can now raise ``UnicodeDecodeError``. Reported in
+  :issue:`1510` by Ofer Koren.
+
+- Make `gevent.subprocess.Popen.communicate` be more careful about
+  closing files. Previously if a timeout error happened, a second call
+  to ``communicate`` might not close the pipe.
+
 
 1.5a3 (2020-01-01)
 ==================

src/gevent/_compat.py

@@ -188,7 +188,11 @@ except ImportError:
 try:
     # Python 3.3+ (PEP 418)
     from time import perf_counter
+    from time import get_clock_info
+    from time import monotonic
     perf_counter = perf_counter
+    monotonic = monotonic
+    get_clock_info = get_clock_info
 except ImportError:
     import time
 
@@ -196,7 +200,9 @@ except ImportError:
         perf_counter = time.clock # pylint:disable=no-member
     else:
         perf_counter = time.time
-
+    monotonic = perf_counter
+    def get_clock_info(_):
+        return 'Unknown'
 
 ## Monitoring
 def get_this_psutil_process():

src/gevent/_fileobjectcommon.py

@@ -371,7 +371,13 @@ class FileObjectBase(object):
         return getattr(self._io, name)
 
     def __repr__(self):
-        return '<%s _fobj=%r%s>' % (self.__class__.__name__, self.io, self._extra_repr())
+        return '<%s at 0x%x %s_fobj=%r%s>' % (
+            self.__class__.__name__,
+            id(self),
+            'closed' if self.closed else '',
+            self.io,
+            self._extra_repr()
+        )
 
     def _extra_repr(self):
         return ''

src/gevent/testing/__init__.py

@@ -85,6 +85,7 @@ from .skipping import skipOnPurePython
 from .skipping import skipWithCExtensions
 from .skipping import skipOnLibuvOnTravisOnCPython27
 from .skipping import skipOnPy37
+from .skipping import skipOnPy3
 from .skipping import skipWithoutResource
 from .skipping import skipWithoutExternalNetwork
 from .skipping import skipOnPy2

src/gevent/testing/openfiles.py

@@ -22,16 +22,52 @@ from __future__ import absolute_import, print_function, division
 import os
 import unittest
 import re
+import gc
+import functools
 
 from . import sysinfo
 
-# Linux/OS X/BSD platforms can implement this by calling out to lsof
+# Linux/OS X/BSD platforms /can/ implement this by calling out to lsof.
+# However, if psutil is available (it is cross-platform) use that.
+# It is *much* faster than shelling out to lsof each time
+# (Running 14 tests takes 3.964s with lsof and 0.046 with psutil)
+# However, it still doesn't completely solve the issue on Windows: fds are reported
+# as -1 there, so we can't fully check those.
+
+def _collects(func):
+    # We've seen OSError: No such file or directory /proc/PID/fd/NUM.
+    # This occurs in the loop that checks open files. It first does
+    # listdir() and then tries readlink() on each file. But the file
+    # went away. This must be because of async GC in PyPy running
+    # destructors at arbitrary times. This became an issue in PyPy 7.2
+    # but could theoretically be an issue with any objects caught in a
+    # cycle. This is one reason we GC before we begin. (The other is
+    # to clean up outstanding objects that will close files in
+    # __del__.)
+    #
+    # Note that this can hide errors, though, by causing greenlets to get
+    # collected and drop references and thus close files. We should be deterministic
+    # and careful about closing things.
+    @functools.wraps(func)
+    def f():
+        gc.collect()
+        gc.collect()
+        enabled = gc.isenabled()
+        gc.disable()
+
+        try:
+            return func()
+        finally:
+            if enabled:
+                gc.enable()
+    return f
 
 
 if sysinfo.WIN:
     def _run_lsof():
         raise unittest.SkipTest("lsof not expected on Windows")
 else:
+    @_collects
     def _run_lsof():
         import tempfile
         pid = os.getpid()
@@ -70,6 +106,7 @@ def default_get_open_files(pipes=False):
     results['data'] = data
     return results
 
+@_collects
 def default_get_number_open_files():
     if os.path.exists('/proc/'):
         # Linux only
@@ -91,12 +128,8 @@ except ImportError:
     get_open_files = default_get_open_files
     get_number_open_files = default_get_number_open_files
 else:
-    # If psutil is available (it is cross-platform) use that.
-    # It is *much* faster than shelling out to lsof each time
-    # (Running 14 tests takes 3.964s with lsof and 0.046 with psutil)
-    # However, it still doesn't completely solve the issue on Windows: fds are reported
-    # as -1 there, so we can't fully check those.
 
+    @_collects
     def get_open_files():
         """
         Return a list of popenfile and pconn objects.
@@ -108,20 +141,9 @@ else:
            (socket.listen(1)). Unlike the lsof implementation, this will only
            return sockets in a state like that.
         """
-        # We've seen OSError: No such file or directory
-        # /proc/PID/fd/NUM. This occurs in the loop that checks open
-        # files. It first does listdir() and then tries readlink() on
-        # each file. But the file went away. This must be because of
-        # async GC in PyPy running destructors at arbitrary times.
-        # This became an issue in PyPy 7.2 but could theoretically be
-        # an issue with any objects caught in a cycle. Try to clean
-        # that up before we begin.
-        import gc
-        gc.collect()
-        gc.collect()
+
         results = dict()
-        gc.disable()
-        try:
+
         for _ in range(3):
             try:
                 process = psutil.Process()
@@ -132,13 +154,13 @@ else:
         else:
             # No break executed
             raise unittest.SkipTest("Unable to read open files")
-        finally:
-            gc.enable()
+
         for x in results['data']:
             results[x.fd] = x
         results['data'] += ['From psutil', process]
         return results
 
+    @_collects
     def get_number_open_files():
         process = psutil.Process()
         try:
@@ -146,3 +168,28 @@ else:
         except AttributeError:
             # num_fds is unix only. Is num_handles close enough on Windows?
             return 0
+
+
+
+class DoesNotLeakFilesMixin(object): # pragma: no cover
+    """
+    A test case mixin that helps find a method that's leaking an
+    open file.
+
+    Only mix this in when needed to debug, it slows tests down.
+    """
+    def setUp(self):
+        self.__open_files_count = get_number_open_files()
+        super(DoesNotLeakFilesMixin, self).setUp()
+
+    def tearDown(self):
+        super(DoesNotLeakFilesMixin, self).tearDown()
+        after = get_number_open_files()
+        if after > self.__open_files_count:
+            raise AssertionError(
+                "Too many open files. Before: %s < After: %s.\n%s" % (
+                    self.__open_files_count,
+                    after,
+                    get_open_files()
+                )
+            )

src/gevent/testing/patched_tests_setup.py

@@ -674,6 +674,11 @@ if WIN:
     disabled_tests += [
         # Issue with Unix vs DOS newlines in the file vs from the server
         'test_ssl.ThreadedTests.test_socketserver',
+        # On appveyor, this sometimes produces 'A non-blocking socket
+        # operation could not be completed immediately', followed by
+        # 'No connection could be made because the target machine
+        # actively refused it'
+        'test_socket.NonBlockingTCPTests.testAccept',
     ]
 
     # These are a problem on 3.5; on 3.6+ they wind up getting (accidentally) disabled.
@@ -803,6 +808,10 @@ if PY3:
             'test_subprocess.ProcessTestCaseNoPoll.test_cwd_with_relative_arg',
             'test_subprocess.ProcessTestCase.test_cwd_with_relative_executable',
 
+            # In 3.7 and 3.8 on Travis CI, this appears to take the full 3 seconds.
+            # Can't reproduce it locally. We have our own copy of this that takes
+            # timing on CI into account.
+            'test_subprocess.RunFuncTestCase.test_run_with_shell_timeout_and_capture_output',
         ]
 
     disabled_tests += [

src/gevent/testing/skipping.py

@@ -43,6 +43,7 @@ skipOnPyPy3 = _do_not_skip
 skipOnPyPyOnWindows = _do_not_skip
 
 skipOnPy2 = unittest.skip if sysinfo.PY2 else _do_not_skip
+skipOnPy3 = unittest.skip if sysinfo.PY3 else _do_not_skip
 skipOnPy37 = unittest.skip if sysinfo.PY37 else _do_not_skip
 
 skipOnPurePython = unittest.skip if sysinfo.PURE_PYTHON else _do_not_skip

src/gevent/testing/testcase.py

@@ -20,7 +20,6 @@
 from __future__ import absolute_import, print_function, division
 
 import sys
-from time import time
 import os.path
 from contextlib import contextmanager
 from unittest import TestCase as BaseTestCase
@@ -28,6 +27,8 @@ from functools import wraps
 
 import gevent
 from gevent._util import LazyOnClass
+from gevent._compat import perf_counter
+from gevent._compat import get_clock_info
 
 from . import sysinfo
 from . import params
@@ -63,13 +64,17 @@ class TimeAssertMixin(object):
                 fuzzy = expected * 5.0
             else:
                 fuzzy = expected / 2.0
-        start = time()
-        yield
-        elapsed = time() - start
+        min_time = expected - fuzzy
+        max_time = expected + fuzzy
+        start = perf_counter()
+        yield (min_time, max_time)
+        elapsed = perf_counter() - start
         try:
             self.assertTrue(
-                expected - fuzzy <= elapsed <= expected + fuzzy,
-                'Expected: %r; elapsed: %r; fuzzy %r' % (expected, elapsed, fuzzy))
+                min_time <= elapsed <= max_time,
+                'Expected: %r; elapsed: %r; fuzzy %r; clock_info: %s' % (
+                    expected, elapsed, fuzzy, get_clock_info('perf_counter')
+                ))
         except AssertionError:
             flaky.reraiseFlakyTestRaceCondition()
 
@@ -248,6 +253,11 @@ class TestCase(TestCaseMetaClass("NewBase",
     __timeout__ = params.LOCAL_TIMEOUT if not sysinfo.RUNNING_ON_CI else params.CI_TIMEOUT
 
     switch_expected = 'default'
+    #: Set this to true to cause errors that get reported to the hub to
+    #: always get propagated to the main greenlet. This can be done at the
+    #: class or method level.
+    #: .. caution:: This can hide errors and make it look like exceptions
+    #:    are propagated even if they're not.
     error_fatal = True
     uses_handle_error = True
     close_on_teardown = ()
@@ -257,7 +267,7 @@ class TestCase(TestCaseMetaClass("NewBase",
         # pylint:disable=arguments-differ
         if self.switch_expected == 'default':
             self.switch_expected = get_switch_expected(self.fullname)
-        return BaseTestCase.run(self, *args, **kwargs)
+        return super(TestCase, self).run(*args, **kwargs)
 
     def setUp(self):
         super(TestCase, self).setUp()

src/gevent/testing/testrunner.py

@@ -5,7 +5,6 @@ import sys
 import os
 import glob
 import traceback
-import time
 import importlib
 from datetime import timedelta
 
@@ -135,7 +134,7 @@ class Runner(object):
 
     def _reap_all(self):
         while self._reap() > 0:
-            time.sleep(self.TIME_WAIT_REAP)
+            util.sleep(self.TIME_WAIT_REAP)
 
     def _spawn(self, pool, cmd, options):
         while True:
@@ -144,7 +143,7 @@ class Runner(object):
                 self._running_jobs.append(job)
                 return
 
-            time.sleep(self.TIME_WAIT_SPAWN)
+            util.sleep(self.TIME_WAIT_SPAWN)
 
     def __call__(self):
         util.log("Running tests in parallel with concurrency %s" % (self._worker_count,),)
@@ -153,11 +152,11 @@ class Runner(object):
         # sequentially.
         util.BUFFER_OUTPUT = self._worker_count > 1 or self._quiet
 
-        start = time.time()
+        start = util.perf_counter()
         try:
             self._run_tests()
         except KeyboardInterrupt:
-            self._report(time.time() - start, exit=False)
+            self._report(util.perf_counter() - start, exit=False)
             util.log('(partial results)\n')
             raise
         except:
@@ -165,7 +164,7 @@ class Runner(object):
             raise
 
         self._reap_all()
-        self._report(time.time() - start, exit=True)
+        self._report(util.perf_counter() - start, exit=True)
 
     def _run_tests(self):
         "Runs the tests, produces no report."
@@ -215,7 +214,7 @@ class TravisFoldingRunner(object):
     def __init__(self, runner, travis_fold_msg):
         self._runner = runner
         self._travis_fold_msg = travis_fold_msg
-        self._travis_fold_name = str(int(time.time()))
+        self._travis_fold_name = str(int(util.perf_counter()))
 
         # A zope-style acquisition proxy would be convenient here.
         run_tests = runner._run_tests

src/gevent/testing/timing.py

@@ -18,9 +18,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
-import time
-
 import gevent
+from gevent._compat import perf_counter
 
 from . import sysinfo
 from . import leakcheck
@@ -69,11 +68,11 @@ class _DelayWaitMixin(object):
         seconds = getattr(timeout, 'seconds', timeout)
 
         gevent.get_hub().loop.update_now()
-        start = time.time()
+        start = perf_counter()
         try:
             result = self.wait(timeout)
         finally:
-            self._check_delay_bounds(seconds, time.time() - start,
+            self._check_delay_bounds(seconds, perf_counter() - start,
                                      self._default_delay_min_adj,
                                      self._default_delay_max_adj)
         return result

src/gevent/testing/util.py

@@ -6,10 +6,11 @@ import traceback
 import unittest
 import threading
 import subprocess
-import time
+from time import sleep
 
 from . import six
 from gevent._config import validate_bool
+from gevent._compat import perf_counter
 from gevent.monkey import get_original
 
 # pylint: disable=broad-except,attribute-defined-outside-init
@@ -391,9 +392,9 @@ def run(command, **kwargs): # pylint:disable=too-many-locals
     name = popen.name
 
     try:
-        time_start = time.time()
+        time_start = perf_counter()
         out, err = popen.communicate()
-        took = time.time() - time_start
+        took = perf_counter() - time_start
         if popen.was_killed or popen.poll() is None:
             result = 'TIMEOUT'
         else:
@@ -611,7 +612,7 @@ class TestServer(ExampleMixin,
 
     def before(self):
         if self.before_delay is not None:
-            time.sleep(self.before_delay)
+            sleep(self.before_delay)
         self.assertIsNone(self.popen.poll(),
                           '%s died with code %s' % (
                               self.example, self.popen.poll(),
@@ -619,7 +620,7 @@ class TestServer(ExampleMixin,
 
     def after(self):
         if self.after_delay is not None:
-            time.sleep(self.after_delay)
+            sleep(self.after_delay)
         self.assertIsNone(self.popen.poll(),
                           '%s died with code %s' % (
                               self.example, self.popen.poll(),
@@ -646,6 +647,6 @@ class alarm(threading.Thread):
         self.start()
 
     def run(self):
-        time.sleep(self.timeout)
+        sleep(self.timeout)
         sys.stderr.write('Timeout.\n')
         os._exit(5)

src/gevent/tests/test__core.py

@@ -5,37 +5,51 @@ import unittest
 import sys
 import gevent.testing as greentest
 
-from gevent import core
+from gevent._config import Loop
 
+available_loops = Loop().get_options()
+available_loops.pop('libuv', None)
 
+def not_available(name):
+    return isinstance(available_loops[name], ImportError)
 
-class TestCore(unittest.TestCase):
 
-    def test_get_version(self):
-        version = core.get_version() # pylint: disable=no-member
-        self.assertIsInstance(version, str)
-        self.assertTrue(version)
-        header_version = core.get_header_version() # pylint: disable=no-member
-        self.assertIsInstance(header_version, str)
-        self.assertTrue(header_version)
-        self.assertEqual(version, header_version)
-
-
-class TestWatchers(unittest.TestCase):
+class WatcherTestMixin(object):
+    kind = None
 
     def _makeOne(self):
-        return core.loop() # pylint:disable=no-member
+        return self.kind(default=False) # pylint:disable=not-callable
 
     def destroyOne(self, loop):
         loop.destroy()
 
     def setUp(self):
         self.loop = self._makeOne()
+        self.core = sys.modules[self.kind.__module__]
 
     def tearDown(self):
         self.destroyOne(self.loop)
         del self.loop
 
+    def test_get_version(self):
+        version = self.core.get_version() # pylint: disable=no-member
+        self.assertIsInstance(version, str)
+        self.assertTrue(version)
+        header_version = self.core.get_header_version() # pylint: disable=no-member
+        self.assertIsInstance(header_version, str)
+        self.assertTrue(header_version)
+        self.assertEqual(version, header_version)
+
+    def test_events_conversion(self):
+        self.assertEqual(self.core._events_to_str(self.core.READ | self.core.WRITE), # pylint: disable=no-member
+                         'READ|WRITE')
+
+    def test_EVENTS(self):
+        self.assertEqual(str(self.core.EVENTS), # pylint: disable=no-member
+                         'gevent.core.EVENTS')
+        self.assertEqual(repr(self.core.EVENTS), # pylint: disable=no-member
+                         'gevent.core.EVENTS')
+
     def test_io(self):
         if greentest.WIN:
             # libev raises IOError, libuv raises ValueError
@@ -46,30 +60,65 @@ class TestWatchers(unittest.TestCase):
         with self.assertRaises(Error):
             self.loop.io(-1, 1)
 
-        if hasattr(core, 'TIMER'):
+        if hasattr(self.core, 'TIMER'):
             # libev
             with self.assertRaises(ValueError):
-                self.loop.io(1, core.TIMER) # pylint:disable=no-member
+                self.loop.io(1, self.core.TIMER) # pylint:disable=no-member
 
         # Test we can set events and io before it's started
         if not greentest.WIN:
             # We can't do this with arbitrary FDs on windows;
             # see libev_vfd.h
-            io = self.loop.io(1, core.READ) # pylint:disable=no-member
+            io = self.loop.io(1, self.core.READ) # pylint:disable=no-member
             io.fd = 2
             self.assertEqual(io.fd, 2)
-            io.events = core.WRITE # pylint:disable=no-member
-            if not hasattr(core, 'libuv'):
+            io.events = self.core.WRITE # pylint:disable=no-member
+            if not hasattr(self.core, 'libuv'):
                 # libev
                 # pylint:disable=no-member
-                self.assertEqual(core._events_to_str(io.events), 'WRITE|_IOFDSET')
+                self.assertEqual(self.core._events_to_str(io.events), 'WRITE|_IOFDSET')
             else:
 
-                self.assertEqual(core._events_to_str(io.events), # pylint:disable=no-member
+                self.assertEqual(self.core._events_to_str(io.events), # pylint:disable=no-member
                                  'WRITE')
             io.start(lambda: None)
             io.close()
 
+    def test_timer_constructor(self):
+        with self.assertRaises(ValueError):
+            self.loop.timer(1, -1)
+
+    def test_signal_constructor(self):
+        with self.assertRaises(ValueError):
+            self.loop.signal(1000)
+
+
+class LibevTestMixin(WatcherTestMixin):
+
+    def test_flags_conversion(self):
+        # pylint: disable=no-member
+        core = self.core
+        if not greentest.WIN:
+            self.assertEqual(core.loop(2, default=False).backend_int, 2)
+        self.assertEqual(core.loop('select', default=False).backend, 'select')
+        self.assertEqual(core._flags_to_int(None), 0)
+        self.assertEqual(core._flags_to_int(['kqueue', 'SELECT']), core.BACKEND_KQUEUE | core.BACKEND_SELECT)
+        self.assertEqual(core._flags_to_list(core.BACKEND_PORT | core.BACKEND_POLL), ['port', 'poll'])
+        self.assertRaises(ValueError, core.loop, ['port', 'blabla'])
+        self.assertRaises(TypeError, core.loop, object())
+
+@unittest.skipIf(not_available('libev-cext'), "Needs libev-cext")
+class TestLibevCext(LibevTestMixin, unittest.TestCase):
+    kind = available_loops['libev-cext']
+
+@unittest.skipIf(not_available('libev-cffi'), "Needs libev-cffi")
+class TestLibevCffi(LibevTestMixin, unittest.TestCase):
+    kind = available_loops['libev-cffi']
+
+@unittest.skipIf(not_available('libuv-cffi'), "Needs libuv-cffi")
+class TestLibuvCffi(WatcherTestMixin, unittest.TestCase):
+    kind = available_loops['libuv-cffi']
+
     @greentest.skipOnLibev("libuv-specific")
     @greentest.skipOnWindows("Destroying the loop somehow fails")
     def test_io_multiplex_events(self):
@@ -77,7 +126,7 @@ class TestWatchers(unittest.TestCase):
         import socket
         sock = socket.socket()
         fd = sock.fileno()
-
+        core = self.core
         read = self.loop.io(fd, core.READ)
         write = self.loop.io(fd, core.WRITE)
 
@@ -106,70 +155,6 @@ class TestWatchers(unittest.TestCase):
             write.close()
             sock.close()
 
-    def test_timer_constructor(self):
-        with self.assertRaises(ValueError):
-            self.loop.timer(1, -1)
-
-    def test_signal_constructor(self):
-        with self.assertRaises(ValueError):
-            self.loop.signal(1000)
-
-class TestWatchersDefault(TestWatchers):
-
-    def _makeOne(self):
-        return core.loop(default=True) # pylint:disable=no-member
-
-    def destroyOne(self, loop):
-        return
-
-# XXX: The crash may be fixed? The hang showed up after the crash was
-# reproduced and fixed on linux and OS X.
-@greentest.skipOnLibuvOnWin(
-    "This crashes with PyPy 5.10.0, only on Windows. "
-    "See https://ci.appveyor.com/project/denik/gevent/build/1.0.1380/job/lrlvid6mkjtyrhn5#L1103 "
-    "It has also timed out, but only on Appveyor CPython 3.6; local CPython 3.6 does not. "
-    "See https://ci.appveyor.com/project/denik/gevent/build/1.0.1414/job/yn7yi8b53vtqs8lw#L1523")
-@greentest.skipIf(
-    greentest.LIBUV and greentest.RUNNING_ON_TRAVIS and sys.version_info == (3, 8, 0, 'beta', 4),
-    "Crashes on 3.8.0b4 on TravisCI. "
-    "(https://travis-ci.org/gevent/gevent/jobs/582031266#L215) "
-    "Unable to reproduce locally so far on macOS."
-)
-class TestWatchersDefaultDestroyed(TestWatchers):
-
-    def _makeOne(self):
-        # pylint: disable=no-member
-        l = core.loop(default=True)
-        l.destroy()
-        del l
-        return core.loop(default=True)
-
-@greentest.skipOnLibuv("Tests for libev-only functions")
-class TestLibev(unittest.TestCase):
-
-    def test_flags_conversion(self):
-        # pylint: disable=no-member
-        if not greentest.WIN:
-            self.assertEqual(core.loop(2, default=False).backend_int, 2)
-        self.assertEqual(core.loop('select', default=False).backend, 'select')
-        self.assertEqual(core._flags_to_int(None), 0)
-        self.assertEqual(core._flags_to_int(['kqueue', 'SELECT']), core.BACKEND_KQUEUE | core.BACKEND_SELECT)
-        self.assertEqual(core._flags_to_list(core.BACKEND_PORT | core.BACKEND_POLL), ['port', 'poll'])
-        self.assertRaises(ValueError, core.loop, ['port', 'blabla'])
-        self.assertRaises(TypeError, core.loop, object())
-
-
-class TestEvents(unittest.TestCase):
-
-    def test_events_conversion(self):
-        self.assertEqual(core._events_to_str(core.READ | core.WRITE), # pylint: disable=no-member
-                         'READ|WRITE')
-
-    def test_EVENTS(self):
-        self.assertEqual(str(core.EVENTS), # pylint: disable=no-member
-                         'gevent.core.EVENTS')
-        self.assertEqual(repr(core.EVENTS), # pylint: disable=no-member
-                         'gevent.core.EVENTS')
 
 if __name__ == '__main__':
     greentest.main()