pytest.mark.chargeable: exclude tests that may incur a charge from the cloud provider

conftest.py

# inspired by example in https://docs.pytest.org/en/latest/example/simple.html

import pytest

def pytest_addoption(parser):
    parser.addoption(
        "--runchargeable", action="store_true", default=False, help="run tests that may incur a charge"
    )


def pytest_configure(config):
    config.addinivalue_line("markers", "unit: unit test only, with mocked SaaS connections")
    config.addinivalue_line("markers", "chargeable: running this test could incur cloud service charges")


def pytest_collection_modifyitems(config, items):
    if config.getoption("--runchargeable"):
        # --runchargeable given in cli: do not skip tests that may incur a charge
        return
    skip_chargeable = pytest.mark.skip(reason="need --runchargeable option to run")
    for item in items:
        if "chargeable" in item.keywords:
            item.add_marker(skip_chargeable)