def METHOD_NAME(input_json):
    if request.param == 'file':
        filename = write_to_tmp_json_file(input_json, 'tmp.json')
        arg = str(filename)
        input = None
    elif request.param == 'str':
        arg = json.dumps(input_json)
        input = None
    elif request.param == 'stdin':
        arg = '-'
        input = json.dumps(input_json)
    return arg, input