Use AnyIO instead of pytest-asyncio for running async tests

[agronholm]

This is the first step to implement #166.

[codspeed-hq]

CodSpeed Performance Report

Merging #242 will not alter performance

_{Comparing agronholm:test-with-anyio (073f086) with main (fa8f9b5)}

Summary

✅ 14 untouched

[agronholm]

The linting failure is not due to my changes, it exists in main already.

[Cito]

Thanks for the contribution, @agronholm. Will review later. Never mind any linting issues, will fix them.

[Cito]

Looks good, thank you.

Will remove pytest-asyncio from pyproject.toml after merging.

[agronholm]

Looks good, thank you.

Will fix the mypy error and remove pytest-asyncio from pyproject.toml after merging.

Ah, not removing it from pyproject.toml was an oversight on my part. Have you considered using standard dependency groups? Tox supports them, allowing you to reduce duplication in the dependency specifications.

[Cito]

Have you considered using standard dependency groups? Tox supports them

I'm actually defining them, but not using them in tox. Might improve that, good idea. Wanted to improve the dependency management anyway, probably switching from poetry to uv.

[agronholm]

Have you considered using standard dependency groups? Tox supports them

I'm actually defining them, but not using them in tox. Might improve that, good idea. Wanted to improve the dependency management anyway, probably switching from poetry to uv.

You have dependency groups but they're using the Poetry specific syntax. Recent releases of Poetry should support the standard syntax under the dependency-groups key.

[Cito]

Thanks, made a note to change that. But as already mentioned, might completely move away from Poetry anyway.

[Cito]

@agronholm The project is now standard dependency groups, and uv instead of poetry, resulting in less duplication and more speed. Thanks for pushing me.