我读过各种关于测试中模仿和存根的文章,包括Martin Fowler的《Mocks Aren't Stubs》,但我仍然不理解其中的区别。
当前回答
测试双打:
Fake: Fakes are objects that have working implementations, but not the same as production one. Such as: in-memory implementation of Data Access Object or Repository. Stub: Stub is an object that holds predefined data and uses it to answer calls during tests. Such as: an object that needs to grab some data from the database to respond to a method call. Mocks: Mocks are objects that register calls they receive. In test assertion, we can verify on Mocks that all expected actions were performed. Such as: a functionality that calls e-mail sending service. for more just check this.
其他回答
这张幻灯片很好地解释了主要的区别。
*选自CSE 403第16讲,华盛顿大学(幻灯片由“Marty Stepp”制作)
我偶然看到了《小嘲笑者鲍勃叔叔》的一篇有趣的文章。它以一种非常容易理解的方式解释了所有的术语,因此对初学者很有用。Martin fowler的文章很难读,尤其是对于像我这样的初学者。
存根不会让你考试不及格,mock可以。
测试双打:
Fake: Fakes are objects that have working implementations, but not the same as production one. Such as: in-memory implementation of Data Access Object or Repository. Stub: Stub is an object that holds predefined data and uses it to answer calls during tests. Such as: an object that needs to grab some data from the database to respond to a method call. Mocks: Mocks are objects that register calls they receive. In test assertion, we can verify on Mocks that all expected actions were performed. Such as: a functionality that calls e-mail sending service. for more just check this.
存根和模拟都覆盖外部依赖项,但区别在于
stub ->用于测试数据
mock ->用于测试行为
不测试任何东西(只是用空方法覆盖功能,例如替换Logger以避免在测试时记录任何噪音)
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