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Update dependency pytest-cov to v4 (develop)

RenovateBot requested to merge renovate/develop-pytest-cov-4.x into develop

This MR contains the following updates:

Package Type Update Change
pytest-cov (changelog) dev-dependencies major ==3.0.0 -> ==4.0.0

Release Notes



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Note that this release drops support for multiprocessing.

  • --cov-fail-under no longer causes pytest --collect-only to fail Contributed by Zac Hatfield-Dodds in #&#8203;511 <>_.

  • Dropped support for multiprocessing (mostly because issue 82408 <>_). This feature was mostly working but very broken in certain scenarios and made the test suite very flaky and slow.

    There is builtin multiprocessing support in coverage and you can migrate to that. All you need is this in your .coveragerc::

    [run] concurrency = multiprocessing parallel = true sigterm = true

  • Fixed deprecation in by trying to import setuptools before distutils. Contributed by Ben Greiner in #&#8203;545 <>_.

  • Removed undesirable new lines that were displayed while reporting was disabled. Contributed by Delgan in #&#8203;540 <>_.

  • Documentation fixes. Contributed by Andre Brisco in #&#8203;543 <>_ and Colin O'Dell in #&#8203;525 <>_.

  • Added support for LCOV output format via --cov-report=lcov. Only works with coverage 6.3+. Contributed by Christian Fetzer in #&#8203;536 <>_.

  • Modernized pytest hook implementation. Contributed by Bruno Oliveira in #&#8203;549 <>_ and Ronny Pfannschmidt in #&#8203;550 <>_.


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