Powermock模拟void方法抛出错误 [英] Powermock mocking void method throws error

问题描述

我正在将Powermockito与TestNG一起使用.我的测试类扩展了PowerMockTestCase.我想模拟一个void方法.为此，我使用了以下示例语法，

I am using Powermockito, mockito with TestNG. My test class extends PowerMockTestCase. I want to mock a void method. For that I used following sample syntax,

@PrepareForTest(TestClass.class)
class Sample extends PowerMockTestCase{

@BeforeClass
public void beforeClass(){
TestClass obj = PowerMockito.spy(TestClass.getInstance());
PowerMockito.doNothing().when(obj).voidMethodName(Matchers.any(Type1.class), Matchers.anyString(), Matchers.any(Type2.class));
}

当我给这个时，我得到:

When I give this, I get :

FAILED CONFIGURATION: @BeforeClass beforeClass
org.mockito.exceptions.misusing.UnfinishedStubbingException: 
Unfinished stubbing detected here:
-> at org.powermock.api.mockito.internal.PowerMockitoCore.doAnswer(PowerMockitoCore.java:36)

E.g. thenReturn() may be missing.
Examples of correct stubbing:
    when(mock.isOk()).thenReturn(true);
    when(mock.isOk()).thenThrow(exception);
    doThrow(exception).when(mock).someVoidMethod();
Hints:
 1. missing thenReturn()
 2. you are trying to stub a final method, you naughty developer!

你能让我知道我在这里想念什么吗?

Can you please let me know what I am missing here?

谢谢

推荐答案

如果void方法不是最终方法，则无需使用PowerMockito！ 另外，我不明白为什么要嘲笑"doNoting()".如果您具有默认的模拟行为，则将使用此方法，当调用void方法时，并且对于特定的测试用例，您希望覆盖此行为时，将引发异常.如果您的情况是这样，将完全删除此行.

If the void method is not a final method, you do not need to use PowerMockito! Also, I don't see why you would mock "doNoting()". This would be used if you had a default mocking behavior, throwing an exception when the void method is called, and when for a specific test case you would want to override this behavior. Ib your case, would remove this line completely.

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