Mockito 输出“想要但未调用，实际上与此模拟的交互为零”

Question

我收到此错误：

Wanted but not invoked:
view.showPlayerActivity(null);
Actually, there were zero interactions with this mock.

我有这个代码：

@RunWith(PowerMockRunner.class)
@PrepareForTest(Log.class)
public class MyDriverPresenterTest  {

    @Mock
    private MyDriveRepository mydriveRepository;

    private MyDrivePresenter drivePresenter;

    private Drive drive;

    private List<Drive> driveList;

    @Before
    public void setUpMyRecrdingsPresenter(){

        PowerMockito.mockStatic(Log.class);
        MockitoAnnotations.initMocks(this);

        drivePresenter = new MyDrivePresenter();

        drive = new Drive("Roar",false,1521708960,11);
        driveList.add(drive);

    }

    @Test
    public void testDriveClicked(){
        Uri uri=mydriveRepository.
        getMyDriveItemSelectedPathUri(drive.toFile().getName());
        verify(view).showPlayerActivity(uri);       
    }

}

MyDrivePresenter 类有方法

@Override
    public void onDriveClicked(Drive drive) {
        Uri uri = mydriveRepository.getMyDriveItemSelectedPathUri(drive.toFile().getName());
        Log.i("TAG", "onRecordingClicked: "+uri);
        view.showPlayerActivity(uri);
    }

和 MyDriveRepository 有方法

public Uri getMyDriveItemSelectedPathUri(String name){
        Uri pathUri;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            pathUri = FileProvider.getUriForFile(context,"com.mypackagename",new File(getUserMixDir(),name));
        }else{
            pathUri = Uri.parse("file://"+new File(getUserMixDir(),name));
        }

        return pathUri;
    }

mydriveRepository.getMyDriveItemSelectedPathUri 不断返回 null。我尝试查看以下链接/sf/ask/1438634851/?rq=1，但无法真正找到解决我的问题的方法。

Answer 1

看起来您正在嘲笑您的存储库，因此您需要为演示者调用存储库方法时提供一种行为：

when(mydriveRepository.getMyDriveItemSelectedPathUri(anyString())).thenReturn(mockedUri);

所以你的测试将如下所示：

@Mock
MyDriveRepository mydriveRepository;

@Mock
Uri mockedUri;


@Test
public void testDriveClicked() {
    String filePath = "aPAth";

    presenter.onDriveClicked(drive);
    Uri uri = mydriveRepository.getMyDriveItemSelectedPathUri(filePath);
    verify(view).showPlayerActivity(uri);
}

所以基本上在这里您将测试演示者是否使用伪生成的 URI 调用该视图方法。当演示者调用存储库上的 getMyDriveItemSelectedPathUri 方法时，您告诉框架 (mockito) 返回模拟的 URI。然后，当您测试视图中的方法是否由演示者调用时，真正的测试就来了。