单元测试构造函数很重要吗？ [英] Is it important to unit test a constructor?

问题描述

我应该单元测试构造函数吗？假设我有一个这样的构造函数：

  IMapinfoWrapper wrapper; 
 public SystemInfo（IMapinfoWrapper mapinfoWrapper）
 {
 this.wrapper = mapinfoWrapper; 
} 
  

我需要为这个construtor写一个单元测试吗？我没有包装器变量的任何getter，所以我不需要测试。

解决方案

单元测试关于测试对象的公共状态，行为和交互。

如果你只是在你的构造函数中设置一个私有字段，有什么测试？

不要麻烦单元测试你的简单访问器和mutator。这只是愚蠢，它不帮助任何人。

Ought I to unit test constructors? Say I have a constructor like this:

        IMapinfoWrapper wrapper;
        public SystemInfo(IMapinfoWrapper mapinfoWrapper)
        {
            this.wrapper = mapinfoWrapper;
        }

Do I need to write a unit test for this construtor? I don't have any getters for the wrapper variable, so I don't need to test that.

解决方案

Unit testing is about testing the public states, behaviors, and interactions of your objects.

If you simply set a private field in your constructor, what is there to test?

Don't bother unit-testing your simple accessors and mutators. That's just silly, and it doesn't help anyone.

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