問題描述

我有一個(gè)類似下面的代碼:

I have a code somewhat like this below:

Class A {
  public boolean myMethod(someargs) {
    MyQueryClass query = new MyQueryClass();
    Long id = query.getNextId();
    // some more code
  }
}
Class MyQueryClass     {
  ....
  public Long getNextId() {
    //lot of DB code, execute some DB query
    return id;
  }
}

現(xiàn)在我正在為 A.myMethod(someargs) 編寫測(cè)試.我想跳過真正的方法 query.getNextId() 而是返回一個(gè)存根值.基本上，我想模擬 MyQueryClass.

Now I'am writing a test for A.myMethod(someargs). I want to skip the real method query.getNextId() and instead return a stub value. Basically, I want to mock MyQueryClass.

所以在我的測(cè)試用例中，我使用了:

So in my test case, I have used:

MyQueryClass query = PowerMockito.mock(MyQueryClass.class);
PowerMockito.whenNew(MyQueryClass.class).withNoArguments().thenReturn(query);
when(query.getNextId()).thenReturn(1000000L);

boolean b = A.getInstance().myMethod(args);

//asserts

我在測(cè)試類的開頭使用了 @RunWith(PowerMockRunner.class) 和 @PrepareForTest({MyQueryClass.class}).

I used @RunWith(PowerMockRunner.class) and @PrepareForTest({MyQueryClass.class}) in the beginning of my test class.

但是我調(diào)試測(cè)試的時(shí)候，還是調(diào)用了MyQueryClass類的真實(shí)方法getNextId().

But when I debug the test, it is still calling the real method getNextId() of the MyQueryClass class.

我在這里缺少什么?任何人都可以提供幫助，因?yàn)槲沂?Mockito 和 PowerMockito 的新手.

What am I missing here? Can anyone help as I am new to Mockito and PowerMockito.

推薦答案

需要將調(diào)用構(gòu)造函數(shù)的類放到@PrepareForTest注解中，而不是正在構(gòu)造的類 - 請(qǐng)參閱 模擬新對(duì)象的構(gòu)造.

You need to put the class where the constructor is called into the @PrepareForTest annotation instead of the class which is being constructed - see Mock construction of new objects.

在你的情況下:

? @PrepareForTest(MyQueryClass.class)

? @PrepareForTest(A.class)

更籠統(tǒng)的:

? @PrepareForTest(NewInstanceClass.class)

? @PrepareForTest(ClassThatCreatesTheNewInstance.class)

這篇關(guān)于使用 PowerMockito.whenNew() 不會(huì)被嘲笑，而是調(diào)用原始方法的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！