使用 Mockito 进行 Android MVP 演示者单元测试会导致“需要但未调用”错误

如何解决使用 Mockito 进行 Android MVP 演示者单元测试会导致“需要但未调用”错误

我知道之前有人问过这个问题，但我目前正在深入测试，我很难用 Mockito 以 MVP 模式对演示者进行单元测试

我的代码设置：
物品类别

public class ItemJSON {

   @Serializedname("title")
    String textHolder;

    @Serializedname("id")
    int factNumber;

    public ItemJSON(String factText,int factNumber) {
        this.textHolder = factText;
        this.factNumber = factNumber;
    }

   //getters and setters
}

承包商：

public interface Contractor {

    interface Presenter {
        void getPosts();
    }

    interface View {
     //parse data to recyclerview on Succesfull call. 
        void parseDataToRecyclerView(List<ItemJSON> listCall);

        void onResponseFailure(Throwable throwable);
    }

    interface Interactor {

        interface onGetPostsListener {
            void onSuccessGetPostCall(List<ItemJSON> listCall);
            void onFailure(Throwable t);
        }


        void getPosts(onGetPostsListener onGetPostsListener);

    }
}

API 类：

 @GET("posts")
    Call<List<ItemJSON>> getPost();

交互类：

public class InteractorImpl implements Contractor.Interactor{

    @Override
    public void getPosts(onGetPostsListener onGetPostsListener) {
// NetworkService responsible for seting up Retrofit2
        NetworkService.getInstance().getJSONApi().getPost().enqueue(new Callback<List<ItemJSON>> () {
            @Override
            public void onResponse(@NonNull Call<List<ItemJSON>> call,@NonNull Response<List<ItemJSON>> response) {
                Log.d("OPERATION @GET","CALLBACK SUCCESSFUL");
                onGetPostsListener.onSuccessGetPostCall (response.body ());
            }

            @Override
            public void onFailure(@NonNull Call<List<ItemJSON>>call,@NonNull Throwable t) {
                Log.d("OPERATION @GET","CALLBACK FAILURE");
                onGetPostsListener.onFailure (t);
            }
        });
    }

主讲课：

public class PresenterImpl implements Contractor.Presenter,Contractor.Interactor.onGetPostsListener {

    private final Contractor.View view;
    private final Contractor.Interactor interactor;

    public PresenterImpl (Contractor.View view,Contractor.Interactor interactor){
        this.view = view;
        this.interactor = interactor;
    }

    @Override
    public void getPosts() {
            interactor.getPosts (this);
    }


@Override
public void onSuccessGetPostCall(List<ItemJSON> listCall) {
    view.parseDataToRecyclerView (listCall);
}
}

所以我尝试在 Presenter 上运行一些单元测试，但它们总是失败并且我不断收到下一个错误

Wanted but not invoked Actually,there were zero interactions with this mock

单元测试类：

@RunWith (MockitoJUnitRunner.class)
public class ApiMockTest{

    @Mock
    Contractor.View view;

    private PresenterImpl presenter;

    @Captor
    ArgumentCaptor<List<ItemJSON>> jsons;

    @Before
    public void setUp() {
        MockitoAnnotations.openMocks (this);
        presenter = new PresenterImpl (view,new InteractorImpl ());
    }

    @Test
    public void loadPost() {
        presenter.getPosts ();
        verify(view).parseDataToRecyclerView (jsons.capture ());
        Assert.assertEquals (2,jsons.capture ().size ());
    }
}

我试图了解我做错了什么以及如何解决这个问题，但至于现在我已经没有想法了。我会感谢任何帮助。提前致谢

UPD：在所有情况下，主活动演示者都会在 onClick 中被调用主要活动类：

public class MainActivity extends AppCompatActivity implements Contractor.View {
public Contractor.Presenter presenter;
  @Override
    protected void onCreate(Bundle savedInstanceState) {
presenter = new PresenterImpl (this,new InteractorImpl ());
        binding.getButton.setonClickListener(view ->presenter.getPosts () );
...//code

  @Override
    public void parseDataToRecyclerView(List<ItemJSON> listCall) {
        adapter.updateList(listCall); //diff call to put data into recyclerview adapter
    }
}
}

解决方法

我也遇到过这种情况，即使使用了 mockk 库。问题是你的方法是一个接口方法。您需要从实现此接口的视图中实际调用它。