XCUITest Class teardown isnt deleting the app. But works if its instance teardown. What am I doing wrong?

Question

I have a class teardown which is trying to remove the app, but it doesn't recognize app.terminate().

class DeviceSettingsUtilities : UITestUtilities {
func removeApp(productName:String){
        print("in teardown")
        let springboard = XCUIApplication(bundleIdentifier: "com.apple.springboard")
        XCUIApplication().terminate() // this does nothing
        XCUIApplication(bundleIdentifier: "com.xxx.xxxx").terminate()//this does nothing too, but this works when called as an instance teardown
        sleep(5)
        springboard.activate()
        let icon = springboard.icons.matching(identifier: productName).firstMatch
// icon.exists is false when called as a class teardown
// icon.exists is true when called as an instance teardown
        if icon.exists {
            let iconFrame = icon.frame
            let springboardFrame = springboard.frame
            icon.press(forDuration:1.3)
            springboard.coordinate(withNormalizedOffset: CGVector(dx: ((iconFrame.minX + 3) / springboardFrame.maxX), dy:((iconFrame.minY + 3) / springboardFrame.maxY))).tap()
            sleep(5)
            springboard.buttons["Delete"].firstMatch.tap()
            sleep(5)
        }
        XCUIApplication().terminate()
    }

}

This is being called in the test case class teardown method as shown below

override class func tearDown() {
    super.tearDown()
    let deviceSettings = DeviceSettingsUtilities()
    deviceSettings.removeApp(productName: ProductName.rawValue)
}

This just doesnt delete the app, But if i change class func tearDown() to func tearDown() , it deletes the app with no problem. Not sure what i am missing. Any suggestions ?

Answer 1

This seems like a bug in latest Xcode 10. XCUIApplication.terminate() doesn't seem to work in tearDown() when declared as class.

This can be solved in two ways:

The first option is to use:

override func tearDown() {
    XCUIApplication().terminate()
    super.tearDown()
}

instead of:

override class func tearDown() {…} 

Or, terminate the app differently (press home button, open different app...). However, I would use the first way.

Also consider reporting this to Apple, so they can fix it.

Edit: This has nothing to do with app state (XCUIApplication().state.rawValue), since it is same in test and in tearDown() (4 = running foreground). Also - official documentation says that .terminate() will terminate app, which has a debug session with Xcode, but the debug session is active in tearDown() as well. So it is really probably a bug in Xcode.