[Test]

        public void DriverExtension_Wait()

        {

            var driver = new FirefoxDriver();



            driver.Navigate().GoToUrl("http://www.baidu.com");

            driver.FindElement(By.Id("kw")).SendKeys("selenium");

            driver.FindElement(By.Id("su")).Submit();

            driver.WaitTitleContains("selenium");

            Assert.True(driver.Title.Contains("selenium"));





            driver.Navigate().GoToUrl("http://docs.seleniumhq.org/docs/03_webdriver.jsp");

            driver.WaitElementExist(By.Id("additional-resources"));

            var ele = driver.FindElement(By.Id("additional-resources"));//接收這個元素，類似于判斷





            driver.Navigate().GoToUrl("https://www.mozilla.org/en-US/about/");

            driver.WaitUnit<bool>(

              p => p.FindElement(By.Id("masthead")).Text == "Mozilla");



        }



        [Test]

        public void DriverExtension_ExeJavascript()

        {

            var driver = Helper.WebDriverInstance;

            driver.Navigate().GoToUrl("http://www.baidu.com");

            driver.ExecJavascript("document.getEelementById('kw').value='selenium'");

            driver.ExecJavascript("document.getEelementById('su').Click()");

            Assert.True(driver.Title.Contains("selenium"));

            

            }