def METHOD_NAME(args):
    TEST_PREFIX = "in."
    TEST_SUFFIX = ".json"
    TEST_MPI = ".test.mpi_"
    test_file_name = args.test_input_file
    if test_file_name.startswith(TEST_PREFIX):
        test_file_name = test_file_name[len(TEST_PREFIX):]
    return test_file_name + TEST_MPI + str(args.num_procs) + TEST_SUFFIX