CreatePostPresenter { @Nonnull Observer<Object> sendObservable() { return sendSubject; } CreatePostPresenter(@Nonnull final PostsDao postsDao,
                               @Nonnull final Scheduler uiScheduler);   }
@Test public void testClickSendWithoutData_postIsNotSend() throws Exception { postPresenter.sendObservable().onNext(null); verify(postsDao, never()).postRequestObserver(any(AddPost.class)); }