想要了解@Tested如何与JMockit一起使用(Wants to understand how @Tested works with JMockit)

 我很久以来一直在使用JMockit。我想了解@Tested是如何工作的。 
 
 今天我试图在我的Test课程中使用它。 我的理解是无论我们想要测试哪个类，我们都可以将它标记为@Tested。 
 
 令我困惑的一件事就是当我尝试在@ Before.Below中设置一些东西时，我的查询就是这样。 
 
 我想要编写测试用例的类 
 
public  Class A{

    public A(){}

}

Test class

public class ATest {

    @Tested
    private A a;

    @Before
    public void setUp(){
        a.setSomething();
    }

    @Test
        public void testA(){
    }
}
 
 在这种情况下，我得到NPE。 但是如果我直接在我的测试方法中使用相同的代码块就可以正常工作。任何人都可以帮助我理解@Tested的行为。 我正在使用Jmockit版本1.17 
 
 我还检查了GitHub上的帖子如下： https ： //github.com/jmockit/jmockit1/issues/168我只想确认它是否也解决了我的问题？ 

I am using JMockit since long.I would like to understand how @Tested works.
 
Today i was trying to use it within my Test class. What i understand is Whatever class we wants to test we can mark it as @Tested.
 
One thing which was confusing me about the behaviur of this is when i try to set something in @Before.Below is my query.
 
My Class for which i want to write Test case
 
public  Class A{

    public A(){}

}

Test class

public class ATest {

    @Tested
    private A a;

    @Before
    public void setUp(){
        a.setSomething();
    }

    @Test
        public void testA(){
    }
}
 
In this case i get NPE. But if i use the same block of code in my test method directly that just works fine.Can anybody help me to understand the behavior of @Tested. I am using Jmockit version 1.17
 
I have also checked the post on GitHub as below: https://github.com/jmockit/jmockit1/issues/168 i just wanted to confirm is it also fixing my problem?

原文：https://stackoverflow.com/questions/30868690