ios - 使用 XCTest 测试 PresentedViewController

Question

我有我想测试的方法：

- (void)sendMailToContact:(Contact *)conact
{
    self.contact = conact;

    if ([self isSendingAvaiable]) {

        MFMailComposeViewController *mailViewController = [[MFMailComposeViewController alloc] init];
        mailViewController.mailComposeDelegate = self;
        [mailViewController setToRecipients:@[self.contact.email]];

        [self.parentViewController presentViewController:mailViewController animated:YES completion:nil];
    }
}

考试...

- (void)testSendMailToContact_itShouldShowMFMailComposeViewController
{
    UIViewController *mockViewController = [[UIViewController alloc] init];
    [mockViewController viewDidLoad];

    MailComposer *mockMailComposer = [MailComposer sharedComposerWithController:mockViewController];

    [mockMailComposer sendMailToContact:[self mockContact]];

    XCTAssertTrue([mockViewController.presentedViewController isKindOfClass:[MFMailComposeViewController class]], @"");
}

但它不能正常工作。我应该有 MFMailComposeViewController 作为presentViewController，但我有空。我不知道该怎么办。请帮忙！

score 11 · Accepted Answer

问题是mockViewController不在UIWindow层次结构中。尝试：

[UIApplication sharedApplication].keyWindow.rootViewController = mockViewController;

然后你也可以摆脱viewDidLoad呼叫。

score 2 · Accepted Answer

在测试之前将你的根 ViewController 实例添加到 UIWindow，不需要UIApplication.shared.keyWindow?.rootViewController像上面提到的那样使用。

let window = UIWindow()
window.rootViewController = yourRootViewController
window.makeKeyAndVisible()


XCTAssert(yourRootViewController.presentedViewController is YourModalViewController)

score 2 · Accepted Answer

这是 Swift 4 解决方案：

let vc = UIViewController()
UIApplication.shared.keyWindow?.rootViewController = vc

在你的测试中……</p>

XCTAssert(vc.presentedViewController is MyCustomViewController)

score 0 · Accepted Answer

您的测试用例包含一些问题。您正在展示MFMailComposeViewControllerfrom MailComposer。所以你应该调用presentedViewControlleron mockMailComposernot on mockViewController。

将其更改为：

- (void)testSendMailToContact_itShouldShowMFMailComposeViewController
{
    MailComposer *mockMailComposer = [MailComposer sharedComposerWithController:mockViewController];

    [mockMailComposer sendMailToContact:[self mockContact]];

    XCTAssertTrue([mockMailComposer.presentedViewController isKindOfClass:[MFMailComposeViewController class]], @"");
}

score 0 · Accepted Answer

看起来您的测试需要 2 个部分（或 2 个单独的测试）。第一部分应确保isSendingAvaiableisNO并测试 that mockViewController.presentedViewControlleris nil。第二部分应确保它isSendingAvaiable是YES并测试它mockViewController.presentedViewController是适当的类。

当测试失败时，重要的是要确定错误是出在正在测试的代码上还是出在测试本身上。

也许问题isSendingAvaiable是NO。

ios - 使用 XCTest 测试 PresentedViewController

5 回答 5

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