pytest-mypy

Mypy static type checker plugin for pytest

Features

Runs the mypy static type checker on your source files as part of your pytest test runs.
Does for mypy what the pytest-flake8 plugin does for flake8.
This is a work in progress – pull requests appreciated.

Installation

You can install "pytest-mypy" via pip from PyPI:

$ pip install pytest-mypy

Usage

You can enable pytest-mypy with the --mypy flag:

$ py.test --mypy test_*.py

Mypy supports reading configuration settings from a mypy.ini file. Alternatively, the plugin can be configured in a conftest.py to invoke mypy with extra options:

def pytest_configure(config):
    plugin = config.pluginmanager.getplugin('mypy')
    plugin.mypy_argv.append('--check-untyped-defs')

You can restrict your test run to only perform mypy checks and not any other tests by using the -m option:

py.test --mypy -m mypy test_*.py

License

Distributed under the terms of the MIT license, "pytest-mypy" is free and open source software

Issues

If you encounter any problems, please file an issue along with a detailed description.

Meta

Daniel Bader – @dbader_org – https://dbader.org – mail@dbader.org

https://github.com/dbader/pytest-mypy