nunit with c#

To add extent reports to the existing code, you need to include the ExtentReports and ExtentTest libraries, initialize the ExtentReports object, and create ExtentTest instances for reporting the test status. Here's an updated version of the code with Extent Reports integration:

```csharp

using NUnit.Framework;

using OpenQA.Selenium;

using OpenQA.Selenium.Chrome;

using AventStack.ExtentReports;

using AventStack.ExtentReports.Reporter;

using System.Threading;

namespace FacebookTests

{

    [TestFixture]

    [Parallelizable(ParallelScope.Fixtures)]

    public class FacebookBaseTest

    {

        protected IWebDriver driver;

        protected ExtentReports extent;

        protected ExtentTest test;

        [OneTimeSetUp]

        public void OneTimeSetup()

        {

            // Initialize ExtentReports with HTML reporter

            var htmlReporter = new ExtentHtmlReporter("TestReport.html");

            extent = new ExtentReports();

            extent.AttachReporter(htmlReporter);

        }

        [OneTimeTearDown]

        public void OneTimeCleanup()

        {

            // Flush the ExtentReports instance to generate the report

            extent.Flush();

        }

        [SetUp]

        public void Setup()

        {

            // Initialize ChromeDriver

            driver = new ChromeDriver();

            // Maximize the browser window

            driver.Manage().Window.Maximize();

            // Create a new ExtentTest for the current test

            test = extent.CreateTest(TestContext.CurrentContext.Test.Name);

        }

        [TearDown]

        public void Cleanup()

        {

            // Close the browser

            driver.Quit();

            // End the ExtentTest for the current test

            test.Log(Status.Info, "Test completed");

            // Get the result of the test and log it accordingly

            var result = TestContext.CurrentContext.Result.Outcome;

            if (result == ResultState.Success)

                test.Pass("Test Passed");

            else if (result == ResultState.Failure)

            {

                test.Fail("Test Failed");

                test.AddScreenCaptureFromPath(CaptureScreenshot());

            }

            else if (result == ResultState.Inconclusive || result == ResultState.Skipped)

                test.Skip("Test Skipped");

        }

        protected string CaptureScreenshot()

        {

            // Capture and save a screenshot of the current browser window

            var screenshot = ((ITakesScreenshot)driver).GetScreenshot();

            var screenshotPath = $"Screenshots/{TestContext.CurrentContext.Test.Name}.png";

            screenshot.SaveAsFile(screenshotPath, ScreenshotImageFormat.Png);

            return screenshotPath;

        }

        protected void WaitForElementDisplayed(By locator)

        {

            // Wait for an element to be displayed on the page

            var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));

            wait.Until(SeleniumExtras.WaitHelpers.ExpectedConditions.ElementIsVisible(locator));

        }

    }

    public class FacebookPostTests : FacebookBaseTest

    {

        private LoginPage loginPage;

        private HomePage homePage;

        [SetUp]

        public void TestSetup()

        {

            // Initialize page objects

            loginPage = new LoginPage(driver);

            homePage = new HomePage(driver);

        }

        [Test]

        public void PostOnFacebookTest()

        {

            // Navigate to Facebook

            driver.Navigate().GoToUrl("https://www.facebook.com");

            // Perform login

            loginPage.Login("your_username", "your_password");

            // Post a message on Facebook

            homePage.PostStatus("Hello, Facebook!");

            // Wait for the post to be created

            WaitForElementDisplayed(By.XPath($"//*[contains(text(), 'Hello, Facebook!')]"));

            // Assert that the post was successfully created

            Assert.IsTrue(homePage.IsPost