def METHOD_NAME(capsys):
    showtable.main([os.path.join(ASCII_ROOT, "data/simple_csv.csv")])
    out, err = capsys.readouterr()
    assert out.splitlines() == [
        " a   b   c ",
        "--- --- ---",
        "  1   2   3",
        "  4   5   6",
    ]