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

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.11%. Comparing base (f55503d) to head (3b10bbb).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
tests/conftest.py	0.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #12349      +/-   ##
==========================================
- Coverage   99.11%   99.11%   -0.01%     
==========================================
  Files         130      130              
  Lines       45626    45629       +3     
  Branches     2405     2406       +1     
==========================================
  Hits        45224    45224              
- Misses        272      274       +2     
- Partials      130      131       +1     

Flag	Coverage Δ
CI-GHA	98.96% <0.00%> (-0.01%)	⬇️
OS-Linux	98.71% <0.00%> (-0.01%)	⬇️
OS-Windows	96.96% <0.00%> (-0.01%)	⬇️
OS-macOS	97.86% <0.00%> (-0.01%)	⬇️
Py-3.10.11	97.42% <0.00%> (-0.01%)	⬇️
Py-3.10.20	97.89% <0.00%> (-0.01%)	⬇️
Py-3.11.15	98.09% <0.00%> (-0.02%)	⬇️
Py-3.11.9	97.63% <0.00%> (-0.01%)	⬇️
Py-3.12.10	97.72% <0.00%> (-0.01%)	⬇️
Py-3.12.13	98.19% <0.00%> (-0.02%)	⬇️
Py-3.13.12	98.43% <0.00%> (-0.02%)	⬇️
Py-3.14.3	98.49% <0.00%> (-0.01%)	⬇️
Py-3.14.4t	97.50% <0.00%> (-0.01%)	⬇️
Py-pypy3.11.15-7.3.21	97.37% <0.00%> (-0.01%)	⬇️
VM-macos	97.86% <0.00%> (-0.01%)	⬇️
VM-ubuntu	98.71% <0.00%> (-0.01%)	⬇️
VM-windows	96.96% <0.00%> (-0.01%)	⬇️

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[codspeed-hq]

Merging this PR will degrade performance by 20.13%

❌ 1 regressed benchmark
✅ 60 untouched benchmarks
⏩ 4 skipped benchmarks¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
❌	test_ten_streamed_responses_iter_chunks[pyloop]	131.1 ms	164.1 ms	-20.13%

---

_{Comparing cython-cov (3b10bbb) 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.