🐛 Fix internal Trio test warnings

[samuelcolvin]

Hi, without this fastapi is failing again due to trio warnings while testing. See #5545 and pydantic/pydantic#4662.

There are two problems here (or one causing two issues):

There's a runtime warning from trio:

RuntimeWarning: You seem to already have a custom sys.excepthook handler installed. I'll skip installing Trio's custom handler, but this means MultiErrors will not show full tracebacks.

This was being raised by some tests, but also by the warning line 'ignore::trio.TrioDeprecationWarning', - hence the new warning ignore has to come before that line.

I've no idea what change is causing this, would be great if every test dep could be frozen, e.g. with pip-compile, so these issues don't keep coming up.

[iudeen]

I think we need to freeze test dependencies as samuelcolvin mentioned.

[github-actions]

🚀 Deployed on https://635bc7440a2f3b0af6e6304e--fastapi.netlify.app

[github-actions]

📝 Docs preview for commit 798da51 at: https://635bc607486c4f0cd687c4cd--fastapi.netlify.app

[samuelcolvin]

@tiangolo you probably want to remove pytest-cov, I understand it's no longer maintained and can be replaced by just

coverage run -m pytest

I haven't removed it here since you've set some configuration options that will need to move to pyproject.toml.

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (67b6679) compared to base (f67b19f).
Patch has no changes to coverable lines.

Additional details and impacted files

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  Coverage   100.00%   100.00%           
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  Files          540       540           
  Lines        13946     13946           
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  Hits         13946     13946           

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[github-actions]

📝 Docs preview for commit 67b6679 at: https://635bc7905025240e73fc0f8d--fastapi.netlify.app

[jujumilk3]

This PR needed to me too. thx.
I applied it to #4573.

[tiangolo]

Thanks @samuelcolvin! 🙇

Indeed, it's a good idea to lock the dependencies for tests (not the library ones), although I'm not sure how to integrate that with Hatch, I know Flit didn't support locking either, Poetry is the only one I know that supports locks.

Also not sure how to automatize all that so that it's automated in CI. 🤔 But anyway, I'll think about it and keep an eye out to see if there's a way to improve that here.

And thanks for the pointer about pytest-cov! I took a note about it here.

[samuelcolvin]

👍 thanks @tiangolo.