@Test
public void save_gets_data_from_screen_and_save_to_repository() {
when(view.fillBill(any(Bill.class))).thenReturn(new Bill());
when(repository.save(any(Bill.class))).thenReturn(new OperationResult());
presenter.save();
verify(view, times(1)).fillBill(any(Bill.class));
verify(repository, times(1)).save(any(Bill.class));
verify(view, times(1)).finishView();
}
@Test
public void call_view_with_errors() {
OperationResult result = new OperationResult();
result.addError(ValidationError.NAME);
when(view.fillBill(any(Bill.class))).thenReturn(new Bill());
when(repository.save(any(Bill.class))).thenReturn(result);
presenter.save();
verify(view, times(1)).showError(ValidationError.NAME);
}