mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-09 19:38:42 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

[3.12] gh-124958: fix asyncio.TaskGroup and _PyFuture refcycles (#124959) (#125466)

Browse source 
gh-124958: fix asyncio.TaskGroup and _PyFuture refcycles (#124959)
This commit is contained in:
Thomas Grainger 2024-10-17 05:45:59 +01:00 • committed by GitHub
parent 42b8e52de4
commit 32d457941e
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
5 changed files with 147 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

22
Lib/test/test_asyncio/test_futures.py
View file

@ -640,6 +640,28 @@ class BaseFutureTests:
fut = self._new_future(loop=self.loop)
fut.set_result(Evil())
def test_future_cancelled_result_refcycles(self):
f = self._new_future(loop=self.loop)
f.cancel()
exc = None
try:
f.result()
except asyncio.CancelledError as e:
exc = e
self.assertIsNotNone(exc)
self.assertListEqual(gc.get_referrers(exc), [])
def test_future_cancelled_exception_refcycles(self):
f = self._new_future(loop=self.loop)
f.cancel()
exc = None
try:
f.exception()
except asyncio.CancelledError as e:
exc = e
self.assertIsNotNone(exc)
self.assertListEqual(gc.get_referrers(exc), [])
@unittest.skipUnless(hasattr(futures, '_CFuture'),
'requires the C _asyncio module')