STINNER Victor <vstin...@redhat.com> added the comment:
The bug can be triggered on Linux using this patch:
diff --git a/Lib/test/test_asyncgen.py b/Lib/test/test_asyncgen.py
index 71b0968c79..5e0084dc32 100644
--- a/Lib/test/test_asyncgen.py
+++ b/Lib/test/test_asyncgen.py
@@ -668,8 +668,8 @@ class AsyncGenAsyncioTest(unittest.TestCase):
while True:
yield 1
finally:
- await asyncio.sleep(0.01)
- await asyncio.sleep(0.01)
+ await asyncio.sleep(0.001)
+ await asyncio.sleep(0.001)
DONE = 1
async def run():
@@ -678,7 +678,7 @@ class AsyncGenAsyncioTest(unittest.TestCase):
await g.__anext__()
del g
- await asyncio.sleep(0.1)
+ await asyncio.sleep(0.005)
self.loop.run_until_complete(run())
self.assertEqual(DONE, 1)
And command:
$ ./python -m test -j8 -F test_asyncgen -m test_async_gen_asyncio_gc_aclose_09
0:00:00 load avg: 7.30 [ 1] test_asyncgen passed
0:00:00 load avg: 7.30 [ 2] test_asyncgen passed
0:00:00 load avg: 7.30 [ 3] test_asyncgen passed
(...)
0:00:02 load avg: 7.30 [ 38] test_asyncgen passed
0:00:02 load avg: 7.30 [ 39/1] test_asyncgen failed
Task was destroyed but it is pending!
task: <Task pending name='Task-2' coro=<<async_generator_athrow without
__name__>()> wait_for=<Future pending cb=[<TaskWakeupMethWrapper object at
0x7fb9ad249aa0>()]>>
test test_asyncgen failed -- Traceback (most recent call last):
File "/home/vstinner/prog/python/master/Lib/test/test_asyncgen.py", line 684,
in test_async_gen_asyncio_gc_aclose_09
self.assertEqual(DONE, 1)
AssertionError: 0 != 1
0:00:02 load avg: 7.30 [ 40/1] test_asyncgen passed
0:00:03 load avg: 7.30 [ 41/1] test_asyncgen passed
0:00:03 load avg: 7.30 [ 42/1] test_asyncgen passed
0:00:03 load avg: 7.30 [ 43/1] test_asyncgen passed
0:00:03 load avg: 7.30 [ 44/1] test_asyncgen passed
0:00:03 load avg: 7.30 [ 45/1] test_asyncgen passed
0:00:03 load avg: 7.30 [ 46/1] test_asyncgen passed
0:00:03 load avg: 7.30 [ 47/1] test_asyncgen passed
== Tests result: FAILURE ==
46 tests OK.
1 test failed:
test_asyncgen
Total duration: 3 sec 323 ms
Tests result: FAILURE
----------
_______________________________________
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue35760>
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