Mockito：構造函數中的間諜調用（Java）

Question

這不是Test class with a new() call in it with Mockito的重複。我試圖編寫一個測試來驗證某些方法在我的間諜對象（mockToyFacade）的構造函數中被調用。

被測試的類是ToyFactoryFacade。這個想法是客戶端與ToyFactoryFacade（包裝一個ToyFactory）進行交互以生成ToyFacade，它本身就是Toy對象的一個​​包裝。

我想用Mockito驗證什麼？

我想驗證addToyName（toyName）和addCreationTime（creationTimestamp）正在呼籲ToyFacade。這兩個方法都在ToyFacade的構造函數中調用。

這是什麼問題？

當我試圖窺探ToyFacade，並驗證上述兩種方法都被調用時，我收到一個錯誤，它說「實際上，這個模擬與零交互。」當我單獨調用方法（即不通過構造函數）時，驗證檢查正確。 我不確定我做錯了什麼。

測試代碼

public class ToyFactoryFacadeTest { 
    private Toy mockToy; 
    private ToyFacade mockToyFacade; 
    // System under test. 
    private ToyFactoryFacade toyFactoryFacade; 
    private ToyFactory mockToyFactory; 
    @Before 
    public void setup() { 
     mockToy = mock(Toy.class); 
     mockToyFacade = spy(new ToyFacade(mockToy, "Phone", System.currentTimeMillis())); 
     mockToyFactory = mock(ToyFactory.class); 
     toyFactoryFacade = new ToyFactoryFacade(mockToyFactory) { 
      @Override 
      public Toy getToyFacade(String toyName, long creationTimestamp){ 
       return mockToyFacade; 
      } 
     }; 
    } 

    @Test 
    public void testToyFactoryFacade() { 
     toyFactoryFacade.initializeAndGetToy("Phone", System.currentTimeMillis()); 
     verify(mockToyFacade).addToyName("Phone"); 
     verify(mockToyFacade).addCreationTime(anyLong()); 
    } 
} 

源代碼

public class ToyFactoryFacade { 
    private final ToyFactory toyFactory; 
    public ToyFactoryFacade(ToyFactory toyFactory) { 
     this.toyFactory = toyFactory; 
    } 

    public ToyFacade initializeAndGetToy(String toyName, long creationTimestamp) 
    { 
     getToyFacade(toyName, creationTimestamp); 
    } 

    // For testing. 
    protected ToyFacade getToyFacade(String toyName, long creationTimestamp 
    { 
     return new ToyFacade(toyFactory.newToy(), toyName, creationTimestamp); 
    } 
} 

public class ToyFactory { 
    public Toy newToy() { 
    return new Toy(); 
    } 
} 

public class ToyFacade { 
    private final Toy toy; 
    public ToyFacade(Toy toy, String toyName, long creationTimeStamp) { 
     this.toy = toy; 
     addToyName(toyName); 
     addCreationTime(creationTimestamp); 
    } 

    public void addToyName(String name) { 
     toy.addToyName(toyName); 
    } 

    public void addCreationTime(long timestamp) { 
     toy.addCreationTime(timestamp); 
    } 
} 

public class Toy { 
    public String toyName; 
    public String creationTimestamp; 
    public void addToyName(String name) { 
     toyName = name; 
    } 

    public void addCreationTime(long timestamp) { 
     creationTimestamp = timestamp; 
    } 
} 

Answer 1

您的測試沒有做你所期望的，因爲該方法調用你想驗證你創建之前已經發生你的間諜。你真正想做的是測試這兩個方法調用的效果，而不是調用本身。這看起來像

verify(mockToy).addToyName("Phone"); 
verify(mockToy).addCreationTime(timestamp); 

其中timestamp是無論你在setUp方法傳遞。