如何在 Xcode 中编写涵盖 Facebook 登录的 UI 测试？

我想在 Xcode 中编写一个 UI 测试，涵盖登录FBDSKLoginKit https://cocoapods.org/pods/FBSDKLoginKit.

然而，Facebook iOS SDK 使用SFSafariViewController https://developers.facebook.com/blog/post/2015/10/29/Facebook-Login-iOS9/呈现给用户以验证她的身份，不幸的是，没有办法与之互动SFSafariViewController在 Xcode 7 的 UI 测试中 https://stackoverflow.com/questions/32763010/any-way-to-automate-sfsafariviewcontroller-in-ui-tests.

任何想法如何测试 Facebook 登录而不交互SFSafariViewController?

Swift 3 Xcode 8 解决方案

 func testFacebookLogin() {
    let app = XCUIApplication()

    // set up an expectation predicate to test whether elements exist
    let exists = NSPredicate(format: "exists == true")

    // as soon as your sign in button shows up, press it
    let facebookSignInButton = app.buttons["Login With Facebook"]
    expectation(for: exists, evaluatedWith: facebookSignInButton, handler: nil)
    facebookSignInButton.tap()

    // wait for the "Confirm" title at the top of facebook's sign in screen
    let confirmTitle = app.staticTexts["Confirm"]
    expectation(for: exists, evaluatedWith: confirmTitle, handler: nil)

    // create a reference to the button through the webView and press it
    let webView = app.descendants(matching: .webView)
    webView.buttons["OK"].tap()

    // wait for your app to return and test for expected behavior here
    self.waitForExpectations(timeout: 10, handler: nil)        
}

扩大：

extension XCUIElement {
    func forceTap() {
        if self.isHittable {
            self.tap()
        } else {
            let coordinate: XCUICoordinate = self.coordinate(withNormalizedOffset: .zero)
            coordinate.tap()
        }
    }
}

经过测试和验证，效果很好！