def setUp(self):
    """创建一个调查对象和一组答案，供使用的测试方法使用"""
    question = "What language did you first learn to speak?"
    self.my_survey = AnonymousSurvey(question)
    self.responses = ['English', 'Spanish', 'Mandarin']

def test_store_single_response(self):
    """测试单个答案会被妥善处理"""
    self.my_survey.store_response(self.responses[0])
    self.assertIn(self.responses[0], self.my_survey.responses)

def test_store_three_responses(self):
    """测试三个答案会被妥善存储"""
    for response in self.responses:
        self.my_survey.store_response(response)
    for response in self.responses:
        self.assertIn(response, self.my_survey.responses)