tox.ini

[tox]
envlist =
    py{37,38}-cov
    code-linters

# Default testenv. Used to run tests on all python versions.
[testenv]
passenv = CI GITHUB_*
usedevelop =
    cov: true
    nocov: false
whitelist_externals =
    bash
deps =
    -r tests/requirements.txt
    cov: codecov
commands =
    nocov: pytest -n auto -l -v --basetemp={envtmpdir} --html=report.html --ignore=src tests/
    cov: python setup.py clean --all build_ext --force --inplace
    cov: pytest -n auto -l -v --basetemp={envtmpdir} --html=report.html --cov=src tests/
    cov: codecov -e TOXENV

# Section used to define common variables used by multiple testenvs.
[vars]
code_dirs =
    setup.py \
    src/ \
    tests/

##############################
###     AUTO-FORMATTER     ###
##############################

# black is a code formatter for python: https://github.com/ambv/black.
# The following target formats python files with black formatter.
[testenv:black]
basepython = python3
skip_install = true
deps =
    black
commands =
    black -l 120 \
        {[vars]code_dirs} \
        {posargs}

# Checks that python files are correctly formatted.
[testenv:black-check]
basepython = python3
skip_install = true
deps =
    {[testenv:black]deps}
commands =
    {[testenv:black]commands} --check --diff

# isort is an imports sorter for python: https://github.com/timothycrosley/isort
# The following target sorts the import according to .isort.cfg file.
[testenv:isort]
basepython = python3
skip_install = true
deps =
    isort
    seed-isort-config
commands =
    isort -w 120 \
        {[vars]code_dirs} \
        {posargs}

# Checks that python imports are correctly sorted.
[testenv:isort-check]
basepython = python3
skip_install = true
deps = {[testenv:isort]deps}
commands = {[testenv:isort]commands} --check --diff

# Reformats code with black and isort.
[testenv:autoformat]
basepython = python3
skip_install = true
deps =
    {[testenv:isort]deps}
    {[testenv:black]deps}
commands =
    {[testenv:isort]commands}
    {[testenv:black]commands}


#############################
###        LINTERS        ###
#############################

# flake8 python linter: https://github.com/PyCQA/flake8.
# flake8 config is located in .flake8 file
[testenv:flake8]
basepython = python3
skip_install = true
deps =
    flake8
    flake8-docstrings
    flake8-bugbear
    flake8-mypy
    # flake8-import-order # delegated to isort
    flake8-colors
    pep8-naming
commands =
    flake8 \
        {[vars]code_dirs} \
        {posargs}

# bandit security linter for python: https://github.com/PyCQA/bandit
[testenv:bandit]
basepython = python3
skip_install = true
deps =
    bandit
commands =
    bandit -r \
        -c .bandit.ini \
        --exclude tests \
        {[vars]code_dirs} \
        {posargs}

# checks that README file is well-formed.
[testenv:readme]
basepython = python3
skip_install = true
deps =
    readme_renderer
commands =
    python setup.py check -r -s

# Pylint linter for python: https://www.pylint.org/
# Pylint config is located in .pylintrc file.
[testenv:pylint]
basepython = python3
deps =
    pyflakes
    pylint
commands =
    pylint \
        {[vars]code_dirs} \
        {posargs}

# Vulture finds unused code in python: https://github.com/jendrikseipp/vulture
[testenv:vulture]
basepython = python3
skip_install = true
deps =
    vulture
commands =
    vulture \
        {[vars]code_dirs} \
        {posargs}

# Static type checker for Python: http://mypy-lang.org/
[testenv:mypy]
basepython = python3
deps =
    mypy
commands =
    mypy \
        {[vars]code_dirs} \
        {posargs}

# semgrep is used to check for security issues
# https://semgrep.dev/
[testenv:semgrep]
basepython = python3
deps =
    semgrep
commands =
    semgrep \
        --config p/r2c-security-audit \
        --config p/secrets \
        --exclude 'third-party/**' \
        --error

# Target that groups all code linters to run in Travis.
[testenv:code-linters]
basepython = python3
skip_install = true
deps =
    {[testenv:black-check]deps}
    {[testenv:isort-check]deps}
    {[testenv:flake8]deps}
    {[testenv:bandit]deps}
    {[testenv:semgrep]deps}
    # {[testenv:pylint]deps}
    # {[testenv:readme]deps}
commands =
    {[testenv:black-check]commands}
    {[testenv:isort-check]commands}
    {[testenv:flake8]commands}
    {[testenv:bandit]commands}
    {[testenv:semgrep]commands}
    # {[testenv:pylint]commands}
    # {[testenv:readme]commands}