[Django]-How can I get tox and poetry to work together to support testing multiple versions of a Python dependency?

14👍

✅

Haven’t thoroughly tested it, but I believe something like this should work:

[tox]
envlist = py{36,37,38}-django{22,30}
isolated_build = True

[testenv]
deps =
    django22: Django==2.2
    django30: Django==3.0
    # plus the dev dependencies
    pytest
    coverage

commands =
    pytest --cov=my_app tests/
    coverage report -m

See the "poetry" section in the "packaging" chapter of the tox documentation.

In order to avoid the repetition of the dev dependencies, one could try the following variation based on the extras feature:

tox.ini

[tox]
# ...

[testenv]
# ...
deps =
    django22: Django==2.2
    django30: Django==3.0
extras =
    test

pyproject.toml

[tool.poetry]
# ...

[tool.poetry.dependencies]
python = "^3.6"
django = "^2.2 || ^3.0"
#
pytest = { version = "^5.2", optional = true }

[tool.poetry.extras]
test = ["pytest"]

[build-system]
# ...

Nowadays there are tox plug-ins that try to make for a better integration with poetry-based projects: