Function assert_unknown_marker

tests/test_pep_508.py:26–35

(
    env,  # type: Dict[str, str]
    expression,  # type: str
)

def assert_unknown_marker(
    env,  # type: Dict[str, str]
    expression,  # type: str
):
    # type: (...) -> None

    # N.B: packaging 23.1 raises `KeyError` and the other vendored versions raise
    # `markers.UndefinedEnvironmentName`.
    with pytest.raises((markers.UndefinedEnvironmentName, KeyError)):
        evaluate_marker(expression, env)


@pytest.mark.skipif(