def METHOD_NAME(self, test_name, contents):
    """
    Fuzz testing to see if the result is equal to the normal ConfigParser.
    :param test_name: Just an identifier to recognise the test by.
    :param contents: The contents of a hypothetical file.
    """
    parser = FastConfigParser(contents)  # Our own implementation.
    ground_truth = configparser.ConfigParser(interpolation = None)
    ground_truth.read_string(contents)
    # Now see if the result is the same.
    for header in parser:
        assert header in ground_truth
    for header in ground_truth:
        if len(ground_truth[header]) == 0:  # Don't need to also mirror empty headers (ConfigParser always has a "DEFAULT" header).
            continue
        assert header in parser
    for header in parser:
        for key in parser[header]:
            assert key in ground_truth[header]
            assert parser[header][key] == ground_truth[header][key]
        for key in ground_truth[header]:
            assert key in parser[header]