Merge "Cert: Fix CertSelfTest by using correct checks in @metadata" am: bde51cf3

    del args["_do_not_use"]

    # Check if at least one optional parameter is valid

    if not any(args):

    if not any(args.values()):

        return _fail_decorator("at least one optional argument should be valid")

    # Validate pts_test_id and pts_test_name

    if (pts_test_id or pts_test_name) and \

        (not pts_test_id or not pts_test_name):

    if any((pts_test_id, pts_test_name)) and \

            not all((pts_test_id, pts_test_name)):

        return _fail_decorator("pts_test_id and pts_test_name must both "

                               "be valid if one of them is valid")