ios - addUIInterruptionMonitor(withDescription :handler:) not working on iOS 10 or 9

Question

以下测试在 iOS 11 上运行良好。它消除了请求权限使用位置服务的警报，然后放大 map 。在 iOS 10 或 9 上，它什么都不做，测试仍然成功

func testExample() {
    let app = XCUIApplication()

    var handled = false
    var appeared = false

    let token = addUIInterruptionMonitor(withDescription: "Location") { (alert) -> Bool in
        appeared = true
        let allow = alert.buttons["Allow"]
        if allow.exists {
            allow.tap()
            handled = true
            return true
        }

        return false
    }

    // Interruption won't happen without some kind of action.
    app.tap()

    removeUIInterruptionMonitor(token)
    XCTAssertTrue(appeared && handled)
}

有没有人知道原因和/或解决方法？

这是一个可以重现问题的项目:https://github.com/TitouanVanBelle/Map

更新

Xcode 9.3 Beta 的变更日志显示如下

XCTest UI interruption monitors now work correctly on devices and simulators running iOS 10. (33278282)

Answer 1

let springboard = XCUIApplication(bundleIdentifier: "com.apple.springboard") 

let allowBtn = springboard.buttons["Allow"]
if allowBtn.waitForExistence(timeout: 10) {
    allowBtn.tap()
}

更新.exists为.waitForExistence(timeout: 10)，详情请查看评论。