使用带有页面对象模型框架的Browserstack

Question

您好我正在尝试将我们的自动化测试集成到浏览器堆栈中。不幸的是有任何网上的东西可以帮助我使用POM框架。

我有seen this这是有用的，但它的基本模板，并没有使用页面对象模型来传递驱动程序。 我不断收到'对象引用未设置为对象的实例'错误。

using Macmillan.Specflow.Support.Models; 
using OpenQA.Selenium; 
using OpenQA.Selenium.Remote; 
using System; 
using System.Configuration; 
using System.Diagnostics; 
using TechTalk.SpecFlow; 

namespace Macmillan.Specflow.Support.Steps 
{ 
    [Binding] 
    public class BaseSteps 
    { 
     public IWebDriver Driver { get; private set; } 

     [BeforeScenario] 
     public void BeforeScenario() 
     { 
      if (Process.GetProcessesByName("BrowserStackLocal").Length == 0) 
       new Process 
       { 
        StartInfo = new ProcessStartInfo 
        { 
         FileName = "BrowserStackLocal.exe", 
         Arguments = ConfigurationManager.AppSettings["browserstack.key"] + " -forcelocal" 
        } 
       }.Start(); 

      var capabilities = new DesiredCapabilities(); 

      capabilities.SetCapability(CapabilityType.Version, "33"); 
      capabilities.SetCapability("os", "windows"); 
      capabilities.SetCapability("os_version", "8"); 
      capabilities.SetCapability("browserName", "firefox"); 

      capabilities.SetCapability("browserstack.user", ConfigurationManager.AppSettings["browserstack.user"]); 
      capabilities.SetCapability("browserstack.key", ConfigurationManager.AppSettings["browserstack.key"]); 

      capabilities.SetCapability("project", "LCI"); 
      capabilities.SetCapability("name", ScenarioContext.Current.ScenarioInfo.Title); 

      capabilities.SetCapability("browserstack.local", true); 


      Driver = new RemoteWebDriver(new Uri(ConfigurationManager.AppSettings["browserstack.hub"]), capabilities); 
      Driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(1)); 
      ScenarioContext.Current["driver"] = Driver; 
     } 


     [AfterScenario] 
     public void AfterScenario() 
     { 
      Driver.Quit(); 
     } 
    } 


using Macmillan.Specflow.Support.Models; 
using OpenQA.Selenium; 
using TechTalk.SpecFlow; 

namespace Macmillan.Specflow.Steps.Steps 
{ 
    public class BaseSteps : Support.Steps.BaseSteps 
    { 
     #region Properties 

     public HomePage HomePage { get; private set; } 
     public EnglandPage EnglandPage { get; set; } 

     #endregion 

     #region Methods 

     [Given(@"I browse to Home page")] 
     public void GivenIBrowseToHomePage() 
     { 
      HomePage = new HomePage(Driver).BrowseTo(); 
     } 

     [Given(@"I navigate to England Page")] 
     public void GivenINavigateToEnglandPage() 
     { 
      EnglandPage = HomePage.HomePageMenuBar.NavigateToEnglandPage(); 
     } 



     #endregion 
    } 
} 


using Macmillan.Specflow.Support.Models.Partials; 
using OpenQA.Selenium; 
using OpenQA.Selenium.Remote; 
using OpenQA.Selenium.Support.PageObjects; 
using System.Configuration; 
using TechTalk.SpecFlow; 

namespace Macmillan.Specflow.Support.Models 
{ 
    public class HomePage 
    { 
     #region Constructors 

     public HomePage(IWebDriver driver) 
     { 
      Driver = driver; 
      Driver = (IWebDriver)ScenarioContext.Current["driver"]; 
      PageFactory.InitElements(Driver, this); 

      HeaderNavigation = new HeaderNavigation(Driver); 
      HomePageMenuBar = new HomePageMenuBar(Driver); 
     } 

     #endregion 

     #region fields 
     [FindsBy(How = How.ClassName, Using = "text-headline")] 
     private IWebElement _header; 

     #endregion 

     #region properties 
     public HomePageMenuBar HomePageMenuBar { get; } 
     public HeaderNavigation HeaderNavigation { get; } 

     public IWebDriver Driver { get; set; } 

     #endregion 


     #region Methods 

     /// <summary> 
     /// Use the browser to browse to the Home Page. 
     /// </summary> 
     /// <returns>An instance of the Home page.</returns> 
     public HomePage BrowseTo() 
     { 
      Driver.Navigate().GoToUrl(ConfigurationManager.AppSettings["baseUrl"]); 
      return this; 
     } 

     #endregion Methods 
    } 
} 

using Macmillan.Specflow.Support.Models; 
using NUnit.Framework; 
using System; 
using System.Text.RegularExpressions; 
using TechTalk.SpecFlow; 

namespace Macmillan.Specflow.Steps.Steps 
{ 
    [Binding] 
    public class LCIEnglandSteps : BaseSteps 
    { 
     #region properties 

     public AboutPage AboutPage { get; set; } 
     public ContactUsPage ContactUsPage { get; set; } 
     public FAQSPage FAQSPage { get; set; } 
     public IncidenceDetailsPage IncidenceDetailsPage { get; set; } 
     public MortalityDetailsPage MortalityDetailsPage { get; set; } 
     public PrevalenceDetailsPage PrevalenceDetailsPage { get; set; } 

     #endregion properties 

     #region methods 

     #region Givens 

     [Given(@"I navigate to the Macmillan Homepage")] 
     public void GivenINavigateToTheMacmillanHomepage() 
     { 
      HomePage.HeaderNavigation.NavigateToMacmillanPage(); 
     } 

     [Given(@"I want to contact Macmillan")] 
     public void GivenIWantToContactMacmillan() 
     { 
      ContactUsPage = EnglandPage.EnglandPageMenuBar.NavigateToContactUs(); 
     } 

     [Given(@"I want to filter the data by both CCG (.*) and Cancer (.*)")] 
     public void GivenIWantToFilterTheDataByBothCCGAndCancer(string p0, string p1) 
     { 
      EnglandPage.CcgFilter = p0; 
      EnglandPage.NavigateIteminCCGList(p0); 
      EnglandPage.CancerTypeFilter = p1; 
      EnglandPage.NavigateIteminCancerTypeList(p1); 
      EnglandPage.ApplyFilter(); 
     } 

     [Given(@"I want to filter the data by Cancer (.*)")] 
     public void GivenIWantToFilterTheDataByCancer(string p0) 
    `enter code here` {`enter code here` 
      EnglandPage.CancerTypeFilter = p0; 
      EnglandPage.NavigateIteminCancerTypeList(p0); 
      EnglandPage.ApplyFilter(); 
     } 

Answer 1

你的问题是，你创建新的驱动程序实例，而不是将现有的驱动程序实例来

public HomePage(IWebDriver driver) 
    { 
     Driver = driver; 
     Driver = (IWebDriver)ScenarioContext.Current["driver"]; 
     PageFactory.InitElements(Driver, this); 

     HeaderNavigation = new HeaderNavigation(Driver); 
     HomePageMenuBar = new HomePageMenuBar(Driver); 
    } 

我以前https://github.com/browserstack/specflow-browserstack/blob/master/SpecFlow-BrowserStack/BrowserStack.cs

而且有一条线，这使得IWebDriver为私有，所以你不能通过它，将其公开并传递给你的页面对象。

public MainPageObjects(BrowserStackDriver driver) 
    { 

     PageFactory.InitElements(driver.driver, this); 

    }