noxfile.py

from os import environ

import nox

nox.options.sessions = ("tests",)
nox.options.reuse_existing_virtualenvs = True
nox.options.error_on_external_run = True


@nox.session(python=("3.6", "3.7", "3.8"))
@nox.parametrize("django", ("2.2", "3.0"))
def tests(session, django):
    session.install("poetry")
    session.run(
        "poetry",
        "install",
        "-Estripe",
        "-Eemail_invoice",
        "-Estarshipit",
        # this is necessary to prevent poetry from creating
        # its own virtualenv
        env={"VIRTUAL_ENV": session.virtualenv.location},
    )
    session.install(f"django>={django},<{django}.999")
    test_env = (
        {"STRIPE_API_KEY": environ["STRIPE_API_KEY"]}
        if "STRIPE_API_KEY" in environ
        else {}
    )
    session.run("pytest", *session.posargs, env=test_env)