Consider this
public class UserManager { private final CrudService crudService; @Inject public UserManager(@Nonnull final CrudService crudService) { this.crudService = crudService; } @Nonnull public List<UserPresentation> getUsersByState(@Nonnull final String state) { return UserPresentation.getUserPresentations(new UserQueries(crudService).getUserByState(state)); } } I want to mock out
new UserQueries(crudService) so that I can mock out its behavior
Any ideas?
With PowerMock you can mock constructors. See example
I'm not with an IDE right now, but would be something like this:
UserQueries userQueries = PowerMockito.mock(UserQueries.class); PowerMockito.whenNew(UserQueries.class).withArguments(Mockito.any(CrudService.class)).thenReturn(userQueries); You need to run your test with PowerMockRunner (add these annotations to your test class):
@RunWith(PowerMockRunner.class) @PrepareForTest(UserQueries .class) If you cannot use PowerMock, you have to inject a factory, as it says @Briggo answer.
Hope it helps
You could inject a factory that creates UserQueries.
public class UserManager { private final CrudService crudService; private final UserQueriesFactory queriesFactory; @Inject public UserManager(@Nonnull final CrudService crudService,UserQueriesFactory queriesFactory) { this.crudService = crudService; this.queriesFactory = queriesFactory; } @Nonnull public List<UserPresentation> getUsersByState(@Nonnull final String state) { return UserPresentation.getUserPresentations(queriesFactory.create(crudService).getUserByState(state)); } }
Although it may be better (if you are going to do this) to inject your CrudService into the factory.
