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LoginViewController编写cedar规范

cedar-bdd cedar objective-c ios

Damodar · 技术社区 · 8 年前

用户名和密码应满足最小长度4。
如果长度为<4.
想要为这两种情况编写测试用例<4及>4个长度。

这是我的密码:

- (IBAction)loginAction:(id)sender {
    if ([[self.userNameTextField text] length] <=3 ||
        [[self.passwordTextField text] length] <=3 ) {
        UIAlertController *alert = [UIAlertController
                                    alertControllerWithTitle:@"Error"
                                    message:@"Username/Password \n length must be > 4 charecters"
                                    preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction *action = [UIAlertAction
                                 actionWithTitle:@"OK"
                                 style:UIAlertActionStyleDefault
                                 handler:^(UIAlertAction * _Nonnull action) {
            [alert dismissViewControllerAnimated:true completion:nil];
        }];

        [alert addAction:action];
        [self presentViewController:alert animated:true completion:nil];
    } else {
        // success case
    }
}

describe(@"LoginViewController", ^{
    __block LoginViewController *subject;

    context(@"it should show the alert",^{
            beforeEach(^{
                subject = [LoginViewController instanceFromStoryboardForSpecs:subject identifier:@"login"];
                UITextField *txtUserName = [UITextField new];
                subject.userNameTextField = txtUserName;
                subject.userNameTextField.text = @"DA";
                [subject loginAction: nil];
            });

            it(@"it should be charecters < 3 ", ^{
                subject.userNameTextField.text.length should be_lte(3);
            });

            it(@"when be charecters < 3 ", ^{
                subject.presentedViewController should be_instance_of([UIAlertController class]);

                UIAlertController *alertController = (id)subject.presentedViewController;

                alertController.title should equal(@"Error"); // Important for proper styling
                alertController.message should equal(@"Username/Password \n length must be > 4 charecters");
                alertController.actions.count should equal(1);
                alertController.preferredStyle should equal(UIAlertControllerStyleAlert);

                UIAlertAction *cancelAction = alertController.actions.firstObject;
                cancelAction.title should equal(@"OK");


            });
        });

});

subject.presentedViewController应该是([UIAlertController类])的实例;

有人能帮我理解编写测试用例吗?我完成了任务 Cedar WiKi

1 回复 | 直到 8 年前

deekay 8 年前

第一个问题是,你知道什么 instanceFromStoryboardForSpecs presentViewController:animated:completion:

你实例化 LoginViewController UITextField 来自代码?我希望这是沿着视图控制器加载的。

我会分担责任:

// call validateUserName:password:, then either presentError: if needed
- (IBAction)loginAction:(id)sender

// login logic
- (void)loginWithUserName:(NSString *)userName password:(NSString *)password

// validation logic
- (BOOL)validateUserName:(NSString *)userName password:(NSString *)password

// use it every time you want to display error
- (BOOL)presentError:(NSString *)error

有了它,你可以 (使用简单的XCTestCase)验证逻辑,如果需要UI测试错误表示逻辑(可以重用以表示不同类型的错误),或者使用BDD测试用户场景作为一个整体,就像您尝试的那样。