       app.buttons["Clear text"].tap()
       passwordTextfieldSecureTextField.typeText("123456")
       XCTAssert(submitButton.isEnabled)
+    } else {
+      // Fallback on earlier versions
+      XCTAssert(false)
     }
     
+  }
+  
 }

import XCTest

class TKFormTextFieldDemoUITests: XCTestCase {
        
    override func setUp() {
        super.setUp()
        
        // Put setup code here. This method is called before the invocation of each test method in the class.
        
        // In UI tests it is usually best to stop immediately when a failure occurs.
        continueAfterFailure = false
        // UI tests must launch the application that they test. Doing this in setup will make sure it happens for each test method.
        XCUIApplication().launch()

        // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this.
    }
    
    override func tearDown() {
        // Put teardown code here. This method is called after the invocation of each test method in the class.
        super.tearDown()
    }
    
    func testExample() {
        // Use recording to get started writing UI tests.
      
      let app = XCUIApplication()
      let submitButton = app.buttons["submit-button"]
      

      emailTextfieldTextField.typeText("bademail")
      XCTAssertFalse(submitButton.isEnabled)
      
      //      app.typeText("\r")
      // Somehow I still cannot find the error label T_T
      //      XCTAssert(emailTextfieldTextField.staticTexts["Email is invalid."].exists)
      
      emailTextfieldTextField.tap()
      app.buttons["Clear text"].tap()
