pytest fixture remove codemod
A LibCST codemod to remove pytest fixtures applied via the usefixtures
decorator,
as well as its parametrizations.
Note
Only fixture usage will be removed, not its definition.
Usage
This package requires Python >= 3.8.
Install from PyPI.
pip install pytest-fixture-remover
Run against your tests, specifying a fixture to remove.
python -m libcst.tool codemod -x pytest_fixture_remover.RemovePytestFixtureCommand my_project_tests/ --name clean_db
Add --no-format
option to stop LibCST from running Black against modified code.
Before/after examples can be found in the tests.test_command
module.
Note on formatting
This codemod assumes that the target code is formatted with Black using the magic trailing comma. It may change the existing formatting in several ways:
- When removing a fixture name from the
usefixtures
call. - When removing a value that parametrizes the fixture via
parametrize
.
In both cases the behavior is the same and obeys the following rules:
- If there's only one item left after modifying, remove the trailing comma.
- If there are multiple items left after modifying and the removed item was the last, preserve the last item's comma (or its absence).