Zac's simple CI setup

.github__workflows__ci.yml

name: Project CI

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  run-tox:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - name: Set up Python 3.9
      uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip setuptools tox
        python -m tox --notest --recreate
    - name: Run checks
      run: |
        python -m tox
        git diff --exit-code

tox.ini

# The test environment and commands
[tox]
skipsdist = True

[testenv:check]
description = Runs all formatting tools then static analysis (quick)
deps =
    flake8
    flake8-bandit
    flake8-bugbear
    flake8-comprehensions
    flake8-docstrings
    shed
commands =
    shed
    flake8

[testenv:test]
description = Runs your logical tests (slower)
deps =
    hypothesis
    pytest
    pytest-cov
    pytest-xdist
commands =
    pytest {posargs:-n auto}


# Settings for other tools
[pytest]
addopts =
    -Werror
    --tb=short
    #  Uncomment these lines to see coverage information for your tests
    #--cov=hypothesmith
    #--cov-branch
    #--cov-report=term-missing:skip-covered
    #--cov-fail-under=100

[flake8]
ignore = D1,E501,W503,S101,S310
exclude = .*,__pycache__