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bpo-36829: Add test.support.catch_unraisable_exception() (GH-13490)

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* Copy test_exceptions.test_unraisable() to
  test_sys.UnraisableHookTest().
* Use catch_unraisable_exception() in test_coroutines,
  test_exceptions, test_generators.
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Victor Stinner 2019-05-22 23:44:02 +02:00 • committed by GitHub
parent 904e34d4e6
commit e4d300e07c
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6 changed files with 108 additions and 43 deletions
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17
Lib/test/test_coroutines.py
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@ -2342,12 +2342,19 @@ class OriginTrackingTest(unittest.TestCase):
orig_wuc = warnings._warn_unawaited_coroutine
try:
warnings._warn_unawaited_coroutine = lambda coro: 1/0
with support.captured_stderr() as stream:
corofn()
with support.catch_unraisable_exception() as cm, \
support.captured_stderr() as stream:
# only store repr() to avoid keeping the coroutine alive
coro = corofn()
coro_repr = repr(coro)
# clear reference to the coroutine without awaiting for it
del coro
support.gc_collect()
self.assertIn("Exception ignored in", stream.getvalue())
self.assertIn("ZeroDivisionError", stream.getvalue())
self.assertIn("was never awaited", stream.getvalue())
self.assertEqual(repr(cm.unraisable.object), coro_repr)
self.assertEqual(cm.unraisable.exc_type, ZeroDivisionError)
self.assertIn("was never awaited", stream.getvalue())
del warnings._warn_unawaited_coroutine
with support.captured_stderr() as stream: