flake8-aaa 0.6.0

A linter for Python tests

Flake8-AAA

A linter for Python tests.

• Pytest and unittest styles supported.

• Tests are linted against the Arrange Act Assert pattern.

  TL;DR following the AAA pattern means tests look like this:

  def test():
      """
      __docstring__
      """
      # ARRANGE: set up of the system under test (SUT)
  
      # ACT: perform a single action on the SUT
  
      # ASSERT: check that the SUT changed as expected

• Provides a Flake8 interface to automatically lint test files as part of your Flake8 run.

• Provides a command line interface for custom (non-Flake8) usage and debugging.

Installation

Install with pip:

$ pip install flake8-aaa

Integration with Flake8

Given that you already have Flake8 installed in the same environment, check that Flake8-AAA was installed correctly by asking flake8 for its version signature:

$ flake8 --version
3.7.7 (aaa: 0.5.2, mccabe: 0.6.1, pycodestyle: 2.5.0, pyflakes: 2.1.0) CPython 3.6.7 on Linux

The aaa: 0.5.2 part of that output tells you flake8 found this plugin. Now you can run flake8 as usual against your project and Flake8-AAA will lint your tests via its plugin:

$ flake8

Resources

• Documentation on ReadTheDocs

• Package on PyPI

• Source code on GitHub

• Licensed on MIT

• Changelog

Tested on Pythons 3.5 and 3.6.

Python 2 supported up to v0.4.0: pypi, docs, tag.