存根和模拟时的区别

问题描述

我是 mockito 的新手.

I am new to mockito.

需要知道存根和何时的区别

need to know difference between stub and when

      1. stub(cpproxy.getBinList()).toReturn(gettestbins());
      2. when(cpproxy.getBinList()).thenReturn(gettestbins());

这两者有什么区别?

推荐答案

其实它们在技术上是一样的.最初创建 Mockito 时，我们谈论的是存根，因此词汇表遵循了这个想法.后来人们认为用交互而不是技术术语来思考更好，所以词汇遵循when ... then ...风格.词汇的这种变化有助于人们思考对象之间的交互、消息传递.这是面向对象语言中最有趣的想法(消息传递)(引用 Alan Kay).

Actually they are technically the same. When Mockito was first created, we were talking about stubs, so the vocabulary followed that idea. Later people thought it was better to think in interactions rather that technical terms, so the vocabulary followed the when ... then ... style. This change in vocabulary helps people to think about interactions, messaging between object. Which is the most interesting idea (message passing) thing in an object oriented language (quoting Alan Kay).

如今的测试方法已演变为行为驱动开发(来自 Dan North)，这几乎是相同的东西，但更多地关注设计时的行为.为了反映这种想法，人们要求 Mockito 提供反映这种变化的 API.因此，您还可以使用 BDDMockito

Nowadays testing approach has evolved to Behavior Driven Development (from Dan North), which is almost the same thing but focus even more on the behavior at design time. To reflect that thinking, people asked Mockito to offer an API that reflect that change. So you also use given ... will ... style from BDDMockito

given(the_type.performs_that()).willReturn(something)

这是我现在最喜欢的词汇，因为我使用测试来驱动我的对象设计.

This is my preferred vocabulary now as I use tests to drive my objects design.

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