def handler():
            nonlocal called
            called += 1
            raise ValueError("yeah sync")
def test_regex_flags_good_input():
    cases = (
        'abcd',
        'ABCabc',
        'ABC',
    )

    case_insensitive = inputs.regex(r'^[A-Z]+$', re.IGNORECASE)

    for value in cases:
        yield assert_equal, case_insensitive(value), value