DEV: Record coverage in subprocesses as well

[stefan6419846]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.39%. Comparing base (98aa974) to head (e7a1eb1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2556   +/-   ##
=======================================
  Coverage   96.39%   96.39%           
=======================================
  Files          52       52           
  Lines        8741     8741           
  Branches     1590     1590           
=======================================
  Hits         8426     8426           
  Misses        186      186           
  Partials      129      129           

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[stefan6419846]

Somehow GitHub does not seem to pick up the configuration - running COVERAGE_PROCESS_START=pyproject.toml python -m pytest tests --cov=pypdf --cov-append -n auto -vv locally does indeed show a difference.

[stefan6419846]

Assumption: We need to use more recent versions of some dependencies to fix this as the latest version would work this way locally and in another project of mine.

[pubpub-zz]

do you have any ideas of which modules needs to be updated and to which minimum version?

[stefan6419846]

Most likely coverage.py and/or pytest-cov, but I have not yet verified this.