using System;

using OpenQA.Selenium;

using OpenQA.Selenium.Chrome;

using OpenQA.Selenium.Support.UI;

using SeleniumExtras.WaitHelpers;

using NUnit.Framework;

using System.Collections.ObjectModel;

// Creating BasePage class

public class BasePage

{

    protected readonly IWebDriver driver;

    protected readonly WebDriverWait wait;

    // Locating Header Elements

    protected readonly By homeLogoButton = By.XPath("//div[@class='container container-xl p-0']//a");

    protected readonly By locator = By.XPath("");

    protected readonly By element = By.XPath("");

    public BasePage(IWebDriver driver)

    {

        this.driver = driver;

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

    }

    protected IWebElement FindElement(By by)

    {

        return wait.Until(ExpectedConditions.ElementIsVisible(by));

    }

    protected ReadOnlyCollection<IWebElement> FindElements(By by)

    {

        return driver.FindElements(by);

    }

    protected void Type(By by, string text) 

    {

        var element = FindElement(by);

        element.Clear();

        element.SendKeys(text);

    }

    protected void Click(By by)

    {

        FindElement(by).Click();

    }

    protected string GetText(By by)

    {

        return FindElement(by).Text;

    }

}

// Creating HomePage class

public class HomePage : BasePage

{

    public HomePage(IWebDriver driver) : base(driver)

    {

    }

    protected readonly By elementName = By.XPath("");

}

// Creating InventoryPage class

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// Creating BaseTest class --------------------------------

public class BaseTest

{

    protected IWebDriver driver;

    protected HomePage homePage;

    [SetUp]

    public void SetUp()

    {

        var chromeOptions = new ChromeOptions();

        chromeOptions.AddUserProfilePreference("profile.password_manager_enabled", false);

        driver = new ChromeDriver(chromeOptions);

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

        driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(5);

        homePage = new HomePage(driver);

    }

    [TearDown]

    public void TearDown()

    {

        if(driver != null)

        {

            driver.Quit();

            driver.Dispose();

        }

    }

    protected void Login(string username, string password)

    {

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

        loginPage.InputUsername(username);

        loginPage.InputPassword(password);

        loginPage.ClickLoginButton();

    }

}

// Creating LoginTests class

public class LoginTests : BaseTest

{

    [Test, Order (1)]

    public void TestLoginWithValidCredentials()

    {

        Login("standard_user", "secret_sauce");

        Assert.IsTrue(inventoryPage.IsPageLoaded(), "The login is not successfully after login with valid credentials.");

    }

    [Test, Order (2)]

    public void TestLoginWithInvalidCredentials()

    {

        Login("invalid_user123", "secret_sauce");

        Assert.That(loginPage.GetErrorMessage().Contains("Username and password do not match any user in this service"), "The error message was not as expected after login with invalid credentials.");

    }

    [Test, Order (3)]

    public void TestLoginWithLockedOutUser()

    {

        Login("locked_out_user", "secret_sauce");

        Assert.That(loginPage.GetErrorMessage().Contains("Sorry, this user has been locked out."), "The error message was not as expected after login with locked user.");

    }

}

// Creating InventoryTests class

public class InventoryTests : BaseTest

{

    [SetUp]

    public void InventoryTestsSetUp()

    {

        Login("standard_user", "secret_sauce");

    }

    [Test, Order (1)]

    public void TestInventoryDisplay()

    {

        Assert.IsTrue(inventoryPage.IsInventoryDisplayed(), "The items are not displayed as expected.");

        Assert.IsTrue(inventoryPage.IsPageLoaded(), "The inventory page is not loaded as expected.");

    }

    [Test, Order (2)]

    public void TestAddToCartByIndex()

    {

        inventoryPage.AddToCartByIndex(1);

        inventoryPage.ClickCartLink();

        Assert.That(driver.PageSource.Contains("Sauce Labs Bike Light"), "The page does not contains the title of the added item");

        Assert.IsTrue(cartPage.IsCartItemDisplayed(),"The cart items section is empty after adding item by index");

    }

    [Test, Order (3)]

    public void TestAddToCartByName()

    {

        inventoryPage.AddToCartByName("Sauce Labs Bike Light");

        inventoryPage.ClickCartLink();

        Assert.That(driver.PageSource.Contains("Sauce Labs Bike Light"), "The page does not contains the title of the added item.");

        Assert.IsTrue(cartPage.IsCartItemDisplayed(),"The cart items section is empty after adding item by name.");

    }

    [Test, Order (4)]

    public void TestInventoryPageTitle()

    {

        Assert.That(inventoryPage.IsPageLoaded(), Is.True, "Inventory page is not loaded as expected.");

    }

}

// Creating CartTests class

public class CartTests : BaseTest

{

    [SetUp]

    public void CartTestsSetUp()

    {

        Login("standard_user", "secret_sauce");

        inventoryPage.AddToCartByName("Sauce Labs Bike Light");

        inventoryPage.ClickCartLink();

    }

    [Test, Order (1)]

    public void TestCartItemDisplayed()

    {   

        Assert.IsTrue(cartPage.IsCartItemDisplayed(), "The added item is not displayed in the cart as expected.");

    }

    [Test, Order (2)]

    public void TestClickCheckout()

    {

        cartPage.ClickCheckout();

        Assert.IsTrue(driver.Url.Contains("checkout-step-one.html"), "The checkout page is not loaded as expected.");

    }

}

// Creating CheckoutTests class

public class CheckoutTests : BaseTest

{

    [SetUp]

    public void CheckoutTestsSetUp()

    {

        Login("standard_user", "secret_sauce");

        inventoryPage.AddToCartByIndex(1);

        inventoryPage.ClickCartLink();

        cartPage.ClickCheckout();

    }

    [Test]

    public void TestCheckoutPageLoaded()

    {

        Assert.IsTrue(driver.Url.Contains("checkout-step-one.html"), "The checkout page is not loaded as expected.");

    }

    public void TestContinueToNextStep()

    {

        checkoutPage.EnterFirstName("TestFirstName");

        checkoutPage.EnterLastName("TestLastName");

        checkoutPage.EnterPostalCode("1234");

        checkoutPage.ClickContinueButton();

        Assert.IsTrue(driver.Url.Contains("checkout-step-two.html"), "The second checkout page is not loaded after pressing the 'continue' button.");

    }

    public void TestCompleteOrder()

    {

        checkoutPage.EnterFirstName("TestFirstName");

        checkoutPage.EnterLastName("TestLastName");

        checkoutPage.EnterPostalCode("1234");

        checkoutPage.ClickContinueButton();

        checkoutPage.ClickFinishButton();

        Assert.IsTrue(driver.Url.Contains("checkout-complete.html"), "The complete page is not loaded after pressing the 'finish' button.");

        Assert.IsTrue(checkoutPage.IsPageComplete(), "The order is not completed and the finish page is not loaded.");

    }

}

// Creating HiddenMenuTests class

public class HiddenMenuTests : BaseTest

{

    [SetUp]

    public void HiddenMenuTestsSetUp()

    {

        Login("standard_user", "secret_sauce");

    }

    [Test]

    public void TestOpenMenu()

    {

        hiddenMenuPage.ClickMenuButton();

        Assert.IsTrue(hiddenMenuPage.IsMenuOpen(), "The hidden menu is not open as expected.");

    }

    [Test]

    public void TestLogout()

    {

        hiddenMenuPage.ClickMenuButton();

        hiddenMenuPage.ClickLogoutButton();

        Assert.IsTrue(driver.Url.Equals("https://www.saucedemo.com/"));

    }

}

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