使用带有页面对象模型框架的Browserstack

Question

嗨，我正在尝试将自动化测试集成到浏览器堆栈中。不幸的是，有任何在线可以帮助我使用POM框架。

我有seen this这是有用的，但它是一个基本模板，不使用页面对象模型来传递驱动程序。我不断得到'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

您的问题是您创建新的驱动程序实例而不是将现有的驱动程序实例传递给

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

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

我用过https://github.com/browserstack/specflow-browserstack/blob/master/SpecFlow-BrowserStack/BrowserStack.cs

并且有一行使IWebDriver成为私有，因此您无法传递它，将其公开并将其传递给您的Page对象。

public MainPageObjects(BrowserStackDriver driver)
    {

       PageFactory.InitElements(driver.driver, this);

    }