Description

pytest-forked: run each test in a forked subprocess ==================================================== .. warning:: this is a extraction of the xdist --forked module, future maintenance beyond the bare minimum is not planned until a new maintainer is found. This plugin **does not work on Windows** because there's no ``fork`` support. * ``--forked``: run each test in a forked subprocess to survive ``SEGFAULTS`` or otherwise dying processes. |python| |version| |ci| |pre-commit| |black| .. |version| image:: http://img.shields.io/pypi/v/pytest-forked.svg :target: https://pypi.python.org/pypi/pytest-forked .. |ci| image:: https://github.com/pytest-dev/pytest-forked/workflows/build/badge.svg :target: https://github.com/pytest-dev/pytest-forked/actions .. |python| image:: https://img.shields.io/pypi/pyversions/pytest-forked.svg :target: https://pypi.python.org/pypi/pytest-forked/ .. |black| image:: https://img.shields.io/badge/code%20style-black-000000.svg :target: https://github.com/ambv/black .. |pre-commit| image:: https://results.pre-commit.ci/badge/github/pytest-dev/pytest-forked/master.svg :target: https://results.pre-commit.ci/latest/github/pytest-dev/pytest-forked/master Installation ----------------------- Install the plugin with:: pip install pytest-forked or use the package in develope/in-place mode with a checkout of the `pytest-forked repository`_ :: pip install -e . Usage examples --------------------- If you have tests involving C or C++ libraries you might have to deal with tests crashing the process. For this case you may use the boxing options:: pytest --forked which will run each test in a subprocess and will report if a test crashed the process. You can also combine this option with running multiple processes via pytest-xdist to speed up the test run and use your CPU cores:: pytest -n3 --forked this would run 3 testing subprocesses in parallel which each create new forked subprocesses for each test. You can also fork for individual tests:: @pytest.mark.forked def test_with_leaky_state(): run_some_monkey_patches() This test will be unconditionally boxed, regardless of CLI flag. .. _`pytest-forked repository`: https://github.com/pytest-dev/pytest-forked