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bpo-31787: Prevent refleaks when calling __init__() more than once (GH-3995)

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(cherry picked from commit d019bc8319)

Co-authored-by: Oren Milman <orenmn@gmail.com>
This commit is contained in:
Miss Islington (bot) 2018-02-13 03:32:18 -08:00 • committed by GitHub
parent 9b5a90b975
commit ef20abed7f
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13 changed files with 105 additions and 19 deletions
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14
Lib/test/test_asyncio/test_tasks.py
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@ -2373,6 +2373,20 @@ class CTask_CFuture_Tests(BaseTaskTests, SetMethodsTest,
Task = getattr(tasks, '_CTask', None)
Future = getattr(futures, '_CFuture', None)
@support.refcount_test
def test_refleaks_in_task___init__(self):
gettotalrefcount = support.get_attribute(sys, 'gettotalrefcount')
@asyncio.coroutine
def coro():
pass
task = self.new_task(self.loop, coro())
self.loop.run_until_complete(task)
refs_before = gettotalrefcount()
for i in range(100):
task.__init__(coro(), loop=self.loop)
self.loop.run_until_complete(task)
self.assertAlmostEqual(gettotalrefcount() - refs_before, 0, delta=10)
@unittest.skipUnless(hasattr(futures, '_CFuture') and
hasattr(tasks, '_CTask'),