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gh-103780: Use patch instead of mock in asyncio unix events test #103782

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merged 2 commits into from
Apr 24, 2023
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gh-103780: Use patch instead of mock in asyncio unix events test #103782

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a76f2e2
gh-103780: Use patch instead of mock in asyncio unix events test
itamaro Apr 24, 2023
7e0479a
Use patch decorator instead of context manager
itamaro Apr 24, 2023
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gh-103780: Use patch instead of mock in asyncio unix events test 
Fixes gh-103780
  • Loading branch information
@itamaro
itamaro committed Apr 24, 2023
commit a76f2e29b2c4fabb70ba230184ea14a248c7048e
40 changes: 20 additions & 20 deletions Lib/test/test_asyncio/test_unix_events.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1713,29 +1713,29 @@ def create_policy(self):
return asyncio.DefaultEventLoopPolicy()

def test_get_default_child_watcher(self):
policy = self.create_policy()
self.assertIsNone(policy._watcher)
unix_events.can_use_pidfd = mock.Mock()
unix_events.can_use_pidfd.return_value = False
with self.assertWarns(DeprecationWarning):
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.ThreadedChildWatcher)
with mock.patch('asyncio.unix_events.can_use_pidfd',
return_value=False):
policy = self.create_policy()
self.assertIsNone(policy._watcher)
with self.assertWarns(DeprecationWarning):
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.ThreadedChildWatcher)

self.assertIs(policy._watcher, watcher)
with self.assertWarns(DeprecationWarning):
self.assertIs(watcher, policy.get_child_watcher())
self.assertIs(policy._watcher, watcher)
with self.assertWarns(DeprecationWarning):
self.assertIs(watcher, policy.get_child_watcher())

policy = self.create_policy()
self.assertIsNone(policy._watcher)
unix_events.can_use_pidfd = mock.Mock()
unix_events.can_use_pidfd.return_value = True
with self.assertWarns(DeprecationWarning):
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.PidfdChildWatcher)
with mock.patch('asyncio.unix_events.can_use_pidfd',
return_value=True):
policy = self.create_policy()
self.assertIsNone(policy._watcher)
with self.assertWarns(DeprecationWarning):
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.PidfdChildWatcher)

self.assertIs(policy._watcher, watcher)
with self.assertWarns(DeprecationWarning):
self.assertIs(watcher, policy.get_child_watcher())
self.assertIs(policy._watcher, watcher)
with self.assertWarns(DeprecationWarning):
self.assertIs(watcher, policy.get_child_watcher())

def test_get_child_watcher_after_set(self):
policy = self.create_policy()
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