Function check_usage

mne/commands/tests/test_commands.py:68–76

Ensure we print usage.

(module, force_help=False)

def check_usage(module, force_help=False):
    """Ensure we print usage."""
    args = ("--help",) if force_help else ()
    with ArgvSetter(args) as out:
        try:
            module.run()
        except SystemExit:
            pass
        assert "Usage: " in out.stdout.getvalue()


@pytest.mark.slowtest