mockito：Void类型不抛出异常

Question

我是jUnit和mockito的新手。对于虚空的嘲弄是如何发挥作用的，我完全感到困惑。在这里，如果名称是“hello”，则函数抛出一个异常。但当我测试它时，它并没有抛出异常...

Class MyService{

    void validate(MyData data){
        if(data.name.equals("hello"))
            throw new InvalidInput(HttpStatus.BAD_REQUEST,"invalid");

        ResponseEntity<Object> response= // ...RestTemplate call;
        if(response.getStatusCodeValue()!=200) throw Exception....
    }

}

测试

Class MyTesting{

  @Mock
  RestTemplate template;
 
  @BeforeEach
  void setup(){

    //mockitio init..
  }
  

  @Test
  void TestingMyFunc(){
     MyData data = new MyData();

     MyService service=mock(MyService.class);

     data.setName("hello");

     //mocking rest call
     when(template.postForEntity(..).then(..));

     doThrow(new InvalidInput(HttpStatus.BAD_REQUEST,"invalid")).when(service).validate(data);     
   }

}

Answer 1

不应该模拟MyService如果您正在测试类内部的方法，则应该只模拟MyService的依赖项，如RestTemplate

Class MyTesting{

 MyService service = new MyService();

 @Mock
 RestTemplate template;

 @BeforeEach
 void setup(){

     //mockitio init..
  }


 @Test
 void TestingMyFunc(){
     MyData data = new MyData();

     data.setName("hello");

     //mocking rest call
     when(template.postForEntity(..).then(..));

     service.validate(data);

  }
}