Add Cython coverage

[Dreamsorcerer]

No description provided.

[webknjaz]

Does this actually work? I know it got broken and stopped working in other projects.. I haven't figured out why.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.91%. Comparing base (f55503d) to head (2330dad).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12349      +/-   ##
==========================================
- Coverage   99.11%   98.91%   -0.21%     
==========================================
  Files         130      133       +3     
  Lines       45626    46257     +631     
  Branches     2405     2405              
==========================================
+ Hits        45224    45754     +530     
- Misses        272      373     +101     
  Partials      130      130              

Flag	Coverage Δ
CI-GHA	98.97% <ø> (ø)
OS-Linux	98.72% <ø> (ø)
OS-Windows	96.97% <ø> (+<0.01%)	⬆️
OS-macOS	97.87% <ø> (ø)
Py-3.10.11	97.43% <ø> (+<0.01%)	⬆️
Py-3.10.20	97.90% <ø> (+<0.01%)	⬆️
Py-3.11.15	98.10% <ø> (-0.01%)	⬇️
Py-3.11.9	97.63% <ø> (ø)
Py-3.12.10	97.72% <ø> (ø)
Py-3.12.13	98.20% <ø> (ø)
Py-3.13.12	98.45% <ø> (ø)
Py-3.14.3	98.51% <ø> (+<0.01%)	⬆️
Py-3.14.4t	97.51% <ø> (ø)
Py-pypy3.11.15-7.3.21	97.38% <ø> (+<0.01%)	⬆️
VM-macos	97.87% <ø> (ø)
VM-ubuntu	98.72% <ø> (ø)
VM-windows	96.97% <ø> (+<0.01%)	⬆️
cython-coverage	37.80% <ø> (?)

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[codspeed-hq]

Merging this PR will not alter performance

✅ 61 untouched benchmarks
⏩ 4 skipped benchmarks¹

---

_{Comparing cython-cov (2330dad) with master (f55503d)}

Footnotes

1. 4 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Dreamsorcerer]

Does this actually work? I know it got broken and stopped working in other projects.. I haven't figured out why.

No idea, that's what codecov is for. A quick test locally suggested that coverage was getting reported.

[webknjaz]

Oh, and Cython needs to be installed into the same env as coveragepy for it to be able to load that plugin.

[Dreamsorcerer]

There seem to be some tests which completely cripple the performance. I think the only reasonable option would be to use a separate job that disables blockbuster and runs a subset of the test suite with tracing.

[Dreamsorcerer]

Doesn't seem to be making it to codecov at all anyway..

[Dreamsorcerer]

There is definitely coverage when running these steps locally. Can't find any reason why this is not producing coverage in CI....

[Dreamsorcerer]

Cython tracing is broken on Python 3.13+ due to https://peps.python.org/pep-0669/
Need to rely on Python 3.12 until that is hopefully resolved.