[asyncio] bpo-30423: add regression test for orphan future causes "RuntimeError: Event loop stopped before Future completed." #3295
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…ure-close-loop [Asyncio] Call remove_done_callback in finally section to prevent orphan future cause RuntimeError: Event loop stopped before Future completed.
* 'master' of https://github.com/python/cpython: (601 commits) remove check for bug last seem in Solaris 9 (python#3285) Change code owners for hashlib and ssl to the crypto team (python#3284) bpo-31281: Fix pathlib.Path incompatibility in fileinput (pythongh-3208) remove autoconf check for select() (python#3283) remove configure check for 'volatile' (python#3281) Add missing _sha3 module to Setup.dist (python#2395) bpo-12383: Also ignore __PYVENV_LAUNCHER__ (python#3278) bpo-9146: add the missing NEWS entry. (python#3275) Fix a c.f.as_completed() refleak previously introduced in bpo-27144 (python#3270) bpo-31185: Fixed miscellaneous errors in asyncio speedup module. (python#3076) remove a redundant lower in urllib.parse.urlsplit (python#3008) bpo-31323: Fix reference leak in test_ssl (python#3263) bpo-31250, test_asyncio: fix EventLoopTestsMixin.tearDown() (python#3264) bpo-31326: ProcessPoolExecutor waits for the call queue thread (python#3265) bpo-27144: concurrent.futures as_complete and map iterators do not keep reference to returned object (python#1560) bpo-31250, test_asyncio: fix dangling threads (python#3252) bpo-31217: Fix regrtest -R for small integer (python#3260) bpo-30096: Use ABC in abc reference examples (python#1220) bpo-30737: Update DevGuide links to new URL (pythonGH-3228) [Trivial] Remove now redundant assert (python#3245) ...
… "RuntimeError: Event loop stopped before Future completed."
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1st1
reviewed
Oct 19, 2017
| loop = asyncio.new_event_loop() | ||
| asyncio.set_event_loop(loop) | ||
| try: | ||
| with mock.patch('asyncio.base_events.BaseEventLoop.run_forever', side_effect=Exception): |
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Make sure that all lines are < 80 chars per PEP 8
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LGTM but please fix code style |
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Codestyle is fixed |
embray
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Nov 9, 2017
…ntimeError: Event loop stopped before Future completed." (python#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."
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@1st1
When comment out the changes (remove future.remove_done_callback(_run_until_complete_cb) out of finally block) in run_until_complete(), this test fails.
With the committed fix, this test can pass and it work as a regression test.
ERROR: test_run_until_complete_loop_orphan_future_close_loop (test.test_asyncio.test_base_events.BaseEventLoopTests)
Traceback (most recent call last):
File "/Users/jimmylai/workspace/cpython/Lib/test/test_asyncio/test_base_events.py", line 543, in test_run_until_complete_loop_orphan_future_close_loop
loop.run_until_complete(foo(0.1))
File "/Users/jimmylai/workspace/cpython/Lib/asyncio/base_events.py", line 463, in run_until_complete
raise RuntimeError('Event loop stopped before Future completed.')
RuntimeError: Event loop stopped before Future completed.
https://bugs.python.org/issue30423
Ref: #1688