Question

我正在运行我的登录单元测试，该测试不断返回错误：

Feb 22, 2019 7:59:55 PM hudson.remoting.SynchronousCommandTransport$ReaderThread run
INFO: I/O error in channel channel
java.io.IOException: Unexpected termination of the channel
        at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:77)
Caused by: java.io.EOFException
        at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2353)
        at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2822)
        at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:804)
        at java.io.ObjectInputStream.<init>(ObjectInputStream.java:301)
        at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:49)
        at hudson.remoting.Command.readFrom(Command.java:140)
        at hudson.remoting.Command.readFrom(Command.java:126)
        at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:36)
        at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:63)

即使由于上述原因测试仍然失败，即使我交叉检查了所有内容，我也不知道为什么会抛出该错误。这是我的代码： LoginPresenterTest：

org.mockito.exceptions.misusing.WrongTypeOfReturnValue: 
ObservableJust cannot be returned by doServerLoginApiCall()
doServerLoginApiCall() should return Single
***
If you're unsure why you're getting above error read on.
Due to the nature of the syntax above problem might occur because:
1. This exception *might* occur in wrongly written multi-threaded tests.
   Please refer to Mockito FAQ on limitations of concurrency testing.
2. A spy is stubbed using when(spy.foo()).then() syntax. It is safer to stub spies - 
   - with doReturn|Throw() family of methods. More in javadocs for Mockito.spy() method.

这是我的testscheduleprovider：

@RunWith(MockitoJUnitRunner.class)
public class LoginPresenterTest {

    @Mock
    LoginMvpView mMockLoginMvpView;
    @Mock
    DataManager mMockDataManager;

    private LoginPresenter<LoginMvpView> mLoginPresenter;
    private TestScheduler mTestScheduler;

    @BeforeClass
    public static void onlyOnce() throws Exception {
    }

    @Before
    public void setUp() throws Exception {
        CompositeDisposable compositeDisposable = new CompositeDisposable();
        mTestScheduler = new TestScheduler();
        TestSchedulerProvider testSchedulerProvider = new TestSchedulerProvider(mTestScheduler);
        mLoginPresenter = new LoginPresenter<>(
            mMockDataManager,
            testSchedulerProvider,
            compositeDisposable);
        mLoginPresenter.onAttach(mMockLoginMvpView);
    }

    @Test
    public void testServerLoginSuccess() {

        String email = "dummy@gmail.com";
        String password = "password";

        LoginResponse loginResponse = new LoginResponse();

        doReturn(Observable.just(loginResponse))
                .when(mMockDataManager)
                .doServerLoginApiCall(new LoginRequest
                        .ServerLoginRequest(email, password));

        mLoginPresenter.onServerLoginClick(email, password);

        mTestScheduler.triggerActions();

        verify(mMockLoginMvpView).showLoading();
        verify(mMockLoginMvpView).hideLoading();
        verify(mMockLoginMvpView).openMainActivity();
    }


    @After
    public void tearDown() throws Exception {
        mLoginPresenter.onDetach();
    }

在LoginPresentertest的第

行抛出了错误

public class TestSchedulerProvider implements SchedulerProvider {

    private final TestScheduler mTestScheduler;

    public TestSchedulerProvider(TestScheduler testScheduler) {
        this.mTestScheduler = testScheduler;
    }

    @Override
    public Scheduler ui() {
        return mTestScheduler;
    }

    @Override
    public Scheduler computation() {
        return mTestScheduler;
    }

    @Override
    public Scheduler io() {
        return mTestScheduler;
    }

}

有什么主意我可以改变它的方法吗？

谢谢！

Answer 1

显然，您的doServerLoginApiCall返回单，但您尝试使用Observable.just(loginResponse)对其进行模拟。应该是Single.just(loginResponse)

当参数正确时，为什么Mockito会抱怨misuse.WrongTypeOfReturnValue？

1 个答案: