Move cmake-modules to integration tests

[Felixoid]

A few improvements:

• Use disk cache for the tests, avoid issues with GHA
• Add a dedicated failing cmake 4.X test (example)
• Move it to make test-tools to launch locally
• Move files to tests/integration directory
• Group logs in CI for easier reading

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.38%. Comparing base (8d6cab9) to head (184b827).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2649   +/-   ##
=======================================
  Coverage   73.38%   73.38%           
=======================================
  Files          68       68           
  Lines       37338    37338           
=======================================
  Hits        27400    27400           
  Misses       9938     9938           

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[Felixoid]

cc @TroyKomodo

[TroyKomodo]

This looks like a much better way to do the integration tests. More scalable!

Personally I would reach for snapshotting here for the json stats output since it shouldn't be changing run-to-run. Right now we just check that at least one file was cached.

This might be something for a broader change across all the integration tests.

Cc @sylvestre

[Felixoid]

By snapshotting, I guess you mean the number of misses/hits. Because the full output looks redundant and can change at any time. Although the whole integration test checks whether the values change, not the exact numbers. Not sure if it's worth diverging now, or rather a small refactoring in the future.

Additionally, it was suspicious that tests work in docker and fail in https://github.com/mozilla/sccache/actions/runs/23459356336/job/68257326892?pr=2581#step:10:38. I added cmake 4.0 test with pip install, and now it catches the bug. I'll keep it here and create another issue.