[tox]
envlist = test,flake8,black
skipsdist = True

[testenv]
commands =
    test:       {[testenv:test]commands}
    flake8:     {[testenv:flake8]commands}
    black:      {[testenv:black]commands}

[testenv:test]
deps =
    pytest
    -rrequirements.txt
commands =
    pytest -v --doctest-modules

[testenv:flake8]
deps = flake8
commands =
    flake8 .

[testenv:black]
allowlist_externals =
    /usr/bin/bash
    /bin/bash
deps = black
commands =
    bash -c "black --check --diff --color tests/ *.py"