def METHOD_NAME():
    '''Generate the test runner source code.'''
    global lvgl_test_dir
    os.chdir(lvgl_test_dir)
    delete_dir_ignore_missing('src/test_runners')
    os.mkdir('src/test_runners')
    # TODO: Intermediate files should be in the build folders, not alongside
    #       the other repo source.
    for f in glob.glob("./src/test_cases/test_*.c"):
        r = f[:-2] + "_Runner.c"
        r = r.replace("/test_cases/", "/test_runners/")
        subprocess.check_call(['ruby', 'unity/generate_test_runner.rb',
                               f, r, 'config.yml'])