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

Wed Nov 1 09:54:48 EDT 2017

https://github.com/python/cpython/commit/d1e34031f68a3c7523a5376575c87cd0fea2425c
commit: d1e34031f68a3c7523a5376575c87cd0fea2425c
branch: master
author: jimmylai <albert_chs at yahoo.com.tw>
committer: Andrew Svetlov <andrew.svetlov at gmail.com>
date: 2017年11月01日T15:54:45+02:00
summary:
[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."
files:
M Lib/test/test_asyncio/test_base_events.py

diff --git a/Lib/test/test_asyncio/test_base_events.py b/Lib/test/test_asyncio/test_base_events.py
index a0ce9fa55e0..6fdb593da6e 100644
--- a/Lib/test/test_asyncio/test_base_events.py
+++ b/Lib/test/test_asyncio/test_base_events.py
@@ -529,6 +529,22 @@ def test_run_until_complete_loop(self):
 self.assertRaises(ValueError,
 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):
 args = [sys.executable, '-c', 'pass']
 
