Xcode 7 UI Testing: Dismiss Push and Location alerts

Question

I encountered a problem with Xcode 7 UI Testing.

The app displays two alerts after my user logs in, the Request Location Alert and the Push

Answer 1

class BaseTest: XCTestCase {
    let pushSent = NSNotification.Name.init("alert.pushSent")
    var notificationMonitor: NSObjectProtocol?

    override func setUp() {
        listenNotifications()
        let app = XCUIApplication()

        notificationMonitor = addUIInterruptionMonitor(withDescription: "Push Notifications") { [unowned self] (alert) -> Bool in
            let btnAllow = app.buttons["Allow"]
            //1:
            if btnAllow.exists {
                btnAllow.tap()
                NotificationCenter.default.post(name: self.pushSent, object: nil)
                return true
            }
            //2:
            //takeScreenshot
            XCTFail("Unexpected System Alert")
            return false
        }
        //3:
        //add code for "Request Location" monitor

        app.launchEnvironment = ["UITEST_DISABLE_ANIMATIONS" : "YES"]
        //4:
        app.launch()

    }

    func listenNotifications() {
        NotificationCenter.default.addObserver(forName: pushSent, object: nil, queue: nil) { (notification) in
            if let locationDialogHandeler = self.notificationMonitor {
                //5:
                self.removeUIInterruptionMonitor(locationDialogHandeler)
            }
        }
    }
}

1: Check if you're in the correct alert, tap the button and find a way to remove the monitor (I'm using NotificationCenter)

2: If you enter a monitor and can not find the right button, it means it's an unexpected flow. Fail the test (but take a screenshot first).

3: Add other monitors

4: I am adding monitor even before launching the app. If you add a monitor after the alert appears, it will not be triggered.

5: Remove the monitor, that way when a new alert appears, the next monitor in the stack will be called.

P.S: You should add monitors in reverse order, therefore, add "Request Location" after "Push Notifications"