@Test
 public void testSave() {
   when(mockTravelDetailsView.validate()).thenReturn(true);
   presenter.save();
   verify(mockTravelDetailsView).validate();
   verify(mockTravelDetailsView).showLoading();
   verify(mockSaveTravelInteractor).execute(any(Callback.class));
 }
 @Before
 public void setUp() {
   MockitoAnnotations.initMocks(this);
   presenter =
       new TravelDetailPresenter(
           mockNavigator,
           mockSaveTravelInteractor,
           mockGetTravelInteractor,
           mockTravelModelConverter);
   presenter.setView(mockTravelDetailsView);
 }
 @Test
 public void testLoadModel() {
   presenter.loadModel(0L);
   verify(mockTravelDetailsView).showLoading();
   verify(mockGetTravelInteractor).execute(any(Callback.class));
 }