the tests folder.
We like pytest and pytest-xdist because it’s faster. From the root of the
repository, here’s how to run tests with pytest for the library:


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$ python -m pytest -n auto --dist=loadfile -s -v ./tests/
In fact, that’s how make test is implemented!
You can specify a smaller set of tests in order to test only the feature
you’re working on.
By default, slow tests are skipped. Set the RUN_SLOW environment variable to
yes to r