Use pyproject.toml to setup test discovery

[theo-brown]

I've added lines in pyproject.toml to configure pytest for automatically discovering tests, following #441.

This should:

• Ignore torax/tests/scripts
• Ignore torax/tests/test_data
• Ignore any directory with lib in the name
• Collect all files with a .py extension from directories called tests, at any level

This necessitated changing the names of the runtime_params test files in transport_models and sources to prevent filename conflicts.

I've modified the Github action to run the tests via auto-discovery.

I have deleted duplicate conftest.py files, and consolidated them into on file in the torax/ directory. I believe this will be shared between all the necessary tests, but I'm not completely sure.

[jcitrin]

Thanks, this is very helpful!

Am testing it and realized that there are some Equinox issues, and also at least one unused broken test that we need to clean up. Possibly we'll want to add some more exclusions too. Will debug on our side and push to this PR.

[theo-brown]

Yep, I think there were a few tests that were not previously being picked up by CI, but now are, that are failing.

I didn't spot the Equinox issues my side, but I didn't start digging into making all the tests work, so it could just be that I didn't look hard enough.

Definitely scope for more inclusions/exclusions - I wasn't certain which of the tests were purposefully vs accidentally being skipped in CI, so I decided to just push this to a PR so that others could work on it to.

[jcitrin]

The Equinox issue was a non-issue, was just a non-updated venv on my side.

We'll take a look at further exclusions / cleanups. Thanks again!

[dniku]

Will torax/tests/sim_no_compile.py (referred to below) be handled correctly after this change?

[jcitrin]

Thanks for flagging. It won't but we're working on it.

[theo-brown]

(relevant commit 029c24c)