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pytest-missing-modules
Advanced tools
Minimalist Pytest plugin that adds a fixture to fake missing modules.
Sometimes, your code needs to handle the possibility that an optional dependency can be missing, e.g., you develop a plotting library supporting multiple drawing backends.
This plugin provides a convenient way to simulate one
or multiple missing modules, raising an ImportError
instead.
First, install this plugin with:
pip install pytest-missing-modules
Then, you use the Pytest fixtures like so:
# this should be in one of your test files
import importlib
import my_package
def test_missing_numpy(missing_modules):
with missing_modules("numpy"):
# Check that you can still import your package, without NumPy!
importlib.reload(my_package)
If you need, you can also add type hints to your code:
from pytest_missing_modules.plugin import MissingModulesContextGenerator
def test_missing_package(missing_modules: MissingModulesContextGenerator):
# your test logic goes here
For more advance usage, please check the documentation.
This project welcomes any contribution, and especially:
FAQs
Pytest plugin to easily fake missing modules
We found that pytest-missing-modules demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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