BeforeRefactoring.swift

  func test_should_display_error_message_for_missing_required_fields() {
      let app = XCUIApplication()
      continueAfterFailure = false
      app.launch()

      let usernameTextField = app.textFields["usernameTextField"]
      usernameTextField.tap()
      usernameTextField.typeText("")

      let passwordTextField = app.textFields["passwordTextField"]
      passwordTextField.tap()
      passwordTextField.typeText("")

      let loginButton = app.buttons["loginButton"]
      loginButton.tap()

      let messageText = app.staticTexts["messageText"]
      XCTAssertEqual(messageText.label, "Required fields are missing")
  }