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[asyncio] bpo-30423: add regression test for orphan future causes "RuntimeError: Event loop stopped before Future completed." (#3295) 

* call remove_done_callback in finally section

* [asyncio] bpo-30423 bug: add regression test for orphan future causes "RuntimeError: Event loop stopped before Future completed."
This commit is contained in:
jimmylai 2017-11-01 06:54:45 -07:00 committed by Andrew Svetlov
parent 894ebd065e
commit d1e34031f6
1 changed files with 16 additions and 0 deletions
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16
Lib/test/test_asyncio/test_base_events.py
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@ -529,6 +529,22 @@ class BaseEventLoopTests(test_utils.TestCase):
self.assertRaises(ValueError, self.assertRaises(ValueError,
other_loop.run_until_complete, task) other_loop.run_until_complete, task)
def test_run_until_complete_loop_orphan_future_close_loop(self):
async def foo(sec=0):
await asyncio.sleep(sec)
self.loop.close()
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
try:
with mock.patch('asyncio.base_events.BaseEventLoop.run_forever',
side_effect=Exception):
loop.run_until_complete(foo())
except:
pass
loop.run_until_complete(foo(0.1))
loop.close()
def test_subprocess_exec_invalid_args(self): def test_subprocess_exec_invalid_args(self):
args = [sys.executable, '-c', 'pass'] args = [sys.executable, '-c', 'pass']