断言selenium webdriver节点js

我试图运行断言用selenium webdriver通过节点js进行测试，但它说未定义，我得到页面标题，这是页面的URL然后断言它，看起来我必须导入......断言，请帮助，也请告诉我，如果selenium与节点js工作正常这里是我的代码：

var webdriver = require('selenium-webdriver'),
//var test = require('selenium-webdriver/testing'),
nodeThen = require('node-then');
var assert = require('assert');
//var jsdom = require("jsdom");
//var document = require('jquery');
var xpath = require('xpath');
//var driver = new webdriver.Builder().
 // withCapabilities(webdriver.Capabilities.chrome()).
 //build();

function createDriver() {
    var driver = new webdriver.Builder()
        .usingServer('link')
        .withCapabilities(webdriver.Capabilities.chrome())
        .build();
    driver.manage().timeouts().setScriptTimeout(10000);
    return driver;
}

var driver = createDriver();
var By = webdriver.By;


driver.get("URL")
    .then(function(){
        driver.sleep(10000);
        var element=driver.findElement(By.id("get-started"));
        element.click();

    })
    .then(function(){`enter code here`
        return driver.getTitle();
    })
    .then(function(title) {
         //console.log(title);
         //driver.manage().timeouts().setScriptTimeout(50000);
        if (title == ('URL')) {
       console.log("pass");
        }
//

我正在寻找相同的问题，我发现这个片段对我有用

driver.findElement(By.id('elementId'))
      .getText().then(textValue => {
        assert.equal('tested string', textValue);
      });

我在selenium-webdriver的github repo的示例文件中找到了它