Python 用测试模块unittest，来测试类

class AnonymousSurvey:
    """收集匿名调查问卷的答案。"""

    def __init__(self, question):
        """存储一个问题，并为存储答案做准备。"""
        self.question = question
        self.responses = []

    def show_question(self):
        """显示调查问卷。"""
        print(self.question)

    def store_response(self, new_response):
        """存储单份调查答卷。"""
        self.responses.append(new_response)

    def show_results(self):
        """显示收集到的所有答卷。"""
        print("Survey results:")
        for response in self.responses:
            print(f"- {response}")



import unittest

class TestAnonymousSurvey(unittest.TestCase):
    """针对AnonymousSurvey类的测试。"""

    def test_store_single_response(self):
        """测试单个答案会被妥善地存储。"""
        question = "What language did you first learn to speak?"
        my_survey = AnonymousSurvey(question)
        my_survey.store_response('English')
        self.assertIn('English', my_survey.responses)


if __name__ == '__main__':
    unittest.main()