Add pytest CI (Github Actions)

[Kartstig]

Background

This adds 2 pytest actions:

1. unit
2. integrative The integrative tests are naively chunked at the moment between integrative-1 and integrative-2`

I think there should be an issue ticket created to rewrite some tests to be folderpath agnostic. If you have filename collision issues, they can be solved by other means. The benefit can be gained when you run parallel test workers. See how the unit test differs, whereas the integrative tests will be run sequentially if we use integrative_batch_tests.sh. I think this will make a difference since the integration tests take about 29m :grimacing:

Once you merge this, you should get builds for every commit. I think it might make sense to at least have unit tests be a required step before merging.

I am happy to guide you through those GitHub settings changes

References

• example pytest-unit From https://github.com/mass-matrix/AMPL

[mauvais2]

pytest.yml a few places have pip install -r pip/dev_requirements.txt but there's no dev_requirements.txt. Do we need `dev_requirements.txt'?

[Kartstig]

pytest.yml a few places have pip install -r pip/dev_requirements.txt but there's no dev_requirements.txt. Do we need `dev_requirements.txt'?

Yeah in my fork I've got the dependencies split up. It should still work as it will optionally install this file if present