模拟一个超类构造函数 [英] Mock a superclass constructor

问题描述

我想知道是否可以模拟超类构造函数调用及其super()调用.

I would like to know if I can mock a super class constructors call and its super() calls.

例如，我有以下课程

class A
{
    A(..)
    {
        super(..)
    }
}   

class B extends A
{
    B(C c)
    {
        super(c)
    }
}

因此，我打算对B类中的某些方法进行单元测试，但是在创建实例时，它确实会调用超类构造函数，因此很难编写单元测试.因此，我该如何模拟所有超类构造函数调用.另外，我想模拟A类中的一些方法，以便它确实根据需要返回一些值.

So, I am planning to unit test some methods in class B, but when creating an instance it does call the super class constructors making it tough to write unit tests. So, how can I mock all the super class constructor calls. Also I would like to mock few methods in class A so that it does return few values as I need.

谢谢！

推荐答案

您可以使用PowerMock库.当您需要完成自己的任务时，它确实是一个救命稻草. https://github.com/powermock/powermock/wiki/Suppress-Unwanted-行为

You could use PowerMock library. It is really a lifesaver when you need to accomplish things like yours. https://github.com/powermock/powermock/wiki/Suppress-Unwanted-Behavior

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