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GH-94597: add deprecation warnings for subclassing AbstractChildWatcher (#99386)

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Kumar Aditya 2022-11-12 12:47:53 +05:30 • committed by GitHub
parent e02cc6d42a
commit aa874326d8
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5 changed files with 21 additions and 3 deletions
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9
Lib/test/test_asyncio/test_unix_events.py
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@ -1108,6 +1108,11 @@ class UnixWritePipeTransportTests(test_utils.TestCase):
class AbstractChildWatcherTests(unittest.TestCase):
def test_warns_on_subclassing(self):
with self.assertWarns(DeprecationWarning):
class MyWatcher(asyncio.AbstractChildWatcher):
pass
def test_not_implemented(self):
f = mock.Mock()
watcher = asyncio.AbstractChildWatcher()
@ -1747,7 +1752,9 @@ class PolicyTests(unittest.TestCase):
self.assertIsInstance(policy.get_event_loop(),
asyncio.AbstractEventLoop)
watcher = policy.get_child_watcher()
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.SafeChildWatcher)
self.assertIsNone(watcher._loop)