Move tests out of installable distribution

[maxrjones]

This PR moves the tests outside the source code directory, so that they are not included with the distributions. This was originally included as part of #826, but is really a distinct change which belongs as its own PR.

Closes #509
TODO:

• Unit tests and/or doctests in docstrings
• Tests pass locally
• Docstrings and API docs for any new/modified user-facing classes and functions
• Changes documented in docs/release.rst
• Docs build locally
• GitHub Actions CI passes
• Test coverage to 100% (Codecov passes)

[d-v-b]

this is great, thank you!

[QuLogic]

One note as a downstream packager: since they aren't in the package directory, it's totally fine if the tests are gone from the wheels now, but please if possible ensure that they stay in the sdist.

[d-v-b]

but please if possible ensure that they stay in the sdist.

how are the tests consumed downstream?

[maxrjones]

One note as a downstream packager: since they aren't in the package directory, it's totally fine if the tests are gone from the wheels now, but please if possible ensure that they stay in the sdist.

thanks for keeping a watch on things! I manually verified that the sdist still includes the tests via uv run --with build python -m build --sdist. My understanding is that setuptools-scm automatically includes all git-tracked files.

[maxrjones]

FYI the failures are the same as on main, so I will merge despite not having 100% checks

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.33%. Comparing base (eab1742) to head (76f6a2b).
⚠️ Report is 1 commits behind head on main.

❌ Your project status has failed because the head coverage (99.33%) is below the target coverage (100.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #829   +/-   ##
=======================================
  Coverage   99.33%   99.33%           
=======================================
  Files          26       26           
  Lines         898      898           
=======================================
  Hits          892      892           
  Misses          6        6           

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• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[QuLogic]

but please if possible ensure that they stay in the sdist.

how are the tests consumed downstream?

We run all tests that are possible; that's how I find arch-specific or release candidate bugs.

thanks for keeping a watch on things! I manually verified that the sdist still includes the tests via uv run --with build python -m build --sdist. My understanding is that setuptools-scm automatically includes all git-tracked files.

Thanks for checking! Sorry I didn't have time to do so before.