def METHOD_NAME(args, work_dir, test_name, test_files):
    num_failed = 0
    os.chdir(work_dir)
    print("Running {} ({} tests)".format(test_name, len(test_files)))
    for test_file in test_files:
        num_failed += run_single_test(args, work_dir, test_file)
    return num_failed;