Question

我遇到了用mockito + junit编写的测试用例在这里找到相同的帮助。方案如下

Class Application{
//property 1 
//property 2
ForeignCollection<Key> keys; //Key class contains multiple keys for same application id and this field does not exist in application Table 
}

这是我想要创建我的测试用例的方法

  class ClassService{
    public Response method(Request request){
    //some lines of code
    verifyKey(request,Application app); //a private method of same class
    }

   private void verifyKey(Request r,Application a){
        boolean matched = false;
        Iterable<Key> keys = application.getSecretKeys().getWrappedIterable();
        for(Key key : keys )
        if(request.headers("Key").equals(key.getKey())) secretKeyMatched=true;
        if(!secretKeyMatched)  throw new InvalidSecretKeyException(request.headers("Secret-Key"),"INVALID SECRET KEY");
     }
   }

以下是测试用例

 Class TestClass{
       @Mock
       private ForeignCollection<Key> keyForeignCollection;
       @Mock
       Request request;
       @Mock
       Response response;
       @Mock
       ClassService classService;
       //below are not mocked
       private CloseableWrappedIterable<Key> closeableWrappedIterableOfKey;
       private Iterable<Key> IterableOfKey;
    @Before
    public void setUp(){
      keyForeignCollection.add(Key object);
      keyFoerignCollection.add(Key object);
      }
    public void shouldMethod(){
    keyForeignCollection.add(make(a(keyMaker.ApplicationSecretKey)));
    application.setkeys(keyForeignCollection);
   when(applicationSecretKeyForeignCollection.size()).thenReturn(2);
   when(application.getKeys().getWrappedIterable()).thenReturn(closeableWrappedIterableOfKey);
  when(request.headers("Key")).thenReturn("some-key"); when(application.getKeys().getWrappedIterable()).thenReturn(keyForeignCollection.getWrappedIterable());
//
Response response = clasService.method(request);
Map<String, String> responseBody = (Map<String, String>) response.getBody();

    }
}

每当从测试用例调用该方法时，由于调用内部方法即验证（Request，Application），它会抛出空指针异常;

帮助！

Answer 1

假设您的目标是绕过对verifyKey方法的调用，而不是测试它;你可以use a Spy。使用@Spy注释classService并模拟ClassService :: verifyKey（Request，Application）方法。

要模拟一个void方法，只需编写

Mockito.doNothing().when(classService ).verifyKey(x, y);

Official doc about spies

在循环中模拟集合和逻辑

1 个答案: