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GH-94597: Deprecate child watcher getters and setters (#98215)

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This is the next step for deprecating child watchers.

Until we've removed the API completely we have to use it, so this PR is mostly suppressing a lot of warnings when using the API internally.

Once the child watcher API is totally removed, the two child watcher implementations we actually use and need (Pidfd and Thread) will be turned into internal helpers.
This commit is contained in:
Kumar Aditya 2022-10-16 04:39:30 +05:30 • committed by GitHub
parent bb56dead33
commit 660f10248b
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9 changed files with 104 additions and 51 deletions
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21
Lib/test/test_asyncio/test_unix_events.py
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@ -1709,33 +1709,36 @@ class PolicyTests(unittest.TestCase):
self.assertIsNone(policy._watcher)
unix_events.can_use_pidfd = mock.Mock()
unix_events.can_use_pidfd.return_value = False
watcher = policy.get_child_watcher()
with self.assertWarns(DeprecationWarning):
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.ThreadedChildWatcher)
self.assertIs(policy._watcher, watcher)
self.assertIs(watcher, policy.get_child_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
watcher = policy.get_child_watcher()
with self.assertWarns(DeprecationWarning):
watcher = policy.get_child_watcher()
self.assertIsInstance(watcher, asyncio.PidfdChildWatcher)
self.assertIs(policy._watcher, watcher)
self.assertIs(watcher, policy.get_child_watcher())
with self.assertWarns(DeprecationWarning):
self.assertIs(watcher, policy.get_child_watcher())
def test_get_child_watcher_after_set(self):
policy = self.create_policy()
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
watcher = asyncio.FastChildWatcher()
policy.set_child_watcher(watcher)
policy.set_child_watcher(watcher)
self.assertIs(policy._watcher, watcher)
self.assertIs(watcher, policy.get_child_watcher())
with self.assertWarns(DeprecationWarning):
self.assertIs(watcher, policy.get_child_watcher())
def test_get_child_watcher_thread(self):
@ -1769,7 +1772,7 @@ class PolicyTests(unittest.TestCase):
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
watcher = asyncio.SafeChildWatcher()
policy.set_child_watcher(watcher)
policy.set_child_watcher(watcher)
watcher.attach_loop(loop)
self.assertIs(watcher._loop, loop)