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[3.12] gh-109862: Fix test_create_subprocess_with_pidfd when it was run separately (GH-113991) #114072

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Merged
merged 1 commit into from
Jan 15, 2024
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[3.12] gh-109862: Fix test_create_subprocess_with_pidfd when it was run separately (GH-113991) #114072

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9 changes: 7 additions & 2 deletions Lib/test/test_asyncio/test_subprocess.py
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Original file line number Diff line number Diff line change
Expand Up @@ -975,8 +975,13 @@ async def in_thread():

async def main():
# asyncio.Runner did not call asyncio.set_event_loop()
with self.assertRaises(RuntimeError):
asyncio.get_event_loop_policy().get_event_loop()
with warnings.catch_warnings():
warnings.simplefilter('error', DeprecationWarning)
# get_event_loop() raises DeprecationWarning if
# set_event_loop() was never called and RuntimeError if
# it was called at least once.
with self.assertRaises((RuntimeError, DeprecationWarning)):
asyncio.get_event_loop_policy().get_event_loop()
return await asyncio.to_thread(asyncio.run, in_thread())
with self.assertWarns(DeprecationWarning):
asyncio.set_child_watcher(asyncio.PidfdChildWatcher())
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