測試prepareForSegue是否符合預期的方法

Question

我不確定如何在單元測試中執行segue，以便prepareForSegue運行。

盡我所能用單元測試覆蓋所有內容，這就是我正在嘗試的內容：

- (void)setUp {

    [super setUp];
    _mainVC = [[UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil]
                      instantiateViewControllerWithIdentifier:kMainVC];
    _detailsVC = [[UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil]
                      instantiateViewControllerWithIdentifier:kDetailsVC];
}

- (void)test_prepareForSegue_will_set_confNumber_on_DetailsVC {

   UIStoryboardSegue *segue = [UIStoryboardSegue segueWithIdentifier:kDetailsSegueId source:_mainVC destination:_detailsVC performHandler:^{
        // do anything here ???
    }];

    [segue perform];
    expect(_detailsVC.textFieldStr).to.equal(@"123456abc");
}

我注意到，當我放入斷點時，主視圖控制器中的prepareForSegue永遠不會被擊中。

Answer 1

DUH。

只需在正在測試的ViewController上調用prepareForSegue :)

UIStoryboardSegue *segue = [UIStoryboardSegue segueWithIdentifier:kDetailsSegueId source:_mainVC destination:_detailsVC performHandler:^{
        // do nothing here
    }];

[_mainVC prepareForSegue:segue sender:self];
expect(_detailsVC.confNumber).to.equal(@"123456abc");