tox.ini

[tox]
# Environment list run by tox (-e to choose)
envlist = clean,py37,py38,coverage

[testenv]
# Main test environment configuration

# Configure 
setenv =
    py{37,38}: COVERAGE_FILE = .coverage.{envname}

# Main command for testing 
# {posargs} can be used in tox cli see https://tox.wiki/en/latest/example/general.html
commands = pytest -o log_cli=true --junitxml=pytest-report.xml --cov-config=.coveragerc --cov --cov-append --cov-report=term-missing {posargs:-vv}

# Dependencies to install to run main command
deps =
    pytest
    pytest-cov

# Environment dependencies : run clean before py37, py38 and coverage after
depends =
    {py37,py38}: clean
    coverage: py37,py38

[testenv:coverage]
# Coverage environment definition
# Do not install in this env. 
skip_install = true
# Install coverage package. 
deps = coverage
# Commands to run in this environment : 
# combine coverage parallel results and generate coverage in html and xml.
commands =
    coverage combine
    coverage html
    coverage xml
    
[testenv:clean]
# Clean coverage environment before
deps = coverage
skip_install = true
commands = coverage erase