Test fixtures gen_cluster gen_test are using asyncio.run #6164
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fjetter
changed the title
pristine_loop fixture likely needs to be removed. This also affects other fixtures like gen_cluster, gen_test, loop, cleanup, etc.
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mrocklin
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Apr 21, 2022
when using `asyncio.run` in `gen_test` test that later call `asyncio.get_event_loop()` fail - even before python3.10:
```python
import asyncio
async def amain():
pass
asyncio.run(amain())
asyncio.get_event_loop()
```
```pytb
Traceback (most recent call last):
File "foo.py", line 7, in <module>
asyncio.get_event_loop()
File "/usr/lib/python3.8/asyncio/events.py", line 639, in get_event_loop
raise RuntimeError('There is no current event loop in thread %r.'
RuntimeError: There is no current event loop in thread 'MainThread'.
```
* use `gen_test` for tests that acquire `IOLoop.current()`
* use `get_running_loop()` instead of `get_event_loop()`
* use `asyncio.run()` instead of `asyncio.get_event_loop().run_until_complete()`
See #6164
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3 tasks
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Fixed by #6231 |
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