AddPrinterPresenter extends UseCasePresenter<AddPrinterScreen> { public void onAddPrinterClicked(final AddPrinterModel addPrinterModel) { showLoading(true); mAddPrinterModelMapper.execute(new TransformSubscriber(), addPrinterModel); } @Inject  AddPrinterPresenter(AddPrinterModelMapper addPrinterModelMapper,
                               AddPrinterDetails addPrinterDetails); void onAddPrinterClicked(final AddPrinterModel addPrinterModel);  }
@Test public void testOnAddPrinterClicked() { mAddPrinterPresenter.onAddPrinterClicked(mAddPrinterModel); verify(mAddPrinterModelMapper).execute(any(Subscriber.class), any(AddPrinterModel.class)); noInteractions(); }