def on_cleanup_error(function, path, excinfo):
                click.secho("warning: failed to remove file or directory: {}\n"
                            "please delete it manually.".format(path),
                            fg="red")
def test_below():
    """Less than y."""
    p = are.not_below(4)
    ps = [p(x) for x in range(1, 6)]
    assert ps == [False, False, False, True, True]