static void Main(string[] args)
        {
            LoadingPageTest loadingPageTest = new LoadingPageTest();
            LoginTest       loginTest       = new LoginTest();
            Orders          orders          = new Orders();

            loadingPageTest.LoadPage("https://www.saucedemo.com/"); //load page test

            loginTest.SuccesfulLogIn();                             //succesful login test

            loginTest.UnsuccesfulLogIn();                           //unsuccesful login test

            loginTest.LockedUserLogIn();                            //locked user login test

            loginTest.LogInWithoutTypingLogin();                    //login without login test

            loginTest.LogInWithoutTypingPassword();                 //login without password test

            orders.AddThreeItemsToCart();                           //adding 3 items to cart test

            orders.RemovingItemFromCart();                          //removing item from cart test

            orders.CheckoutAttempt();                               //checkout attempt test

            orders.CheckoutAttemptWithInvalidPostalCode();          //checkout with invalid postal code test

            orders.MakeAnOrder();                                   //making an order test

            orders.CheckIfCorrectItemsAreInCart();                  //checking of correct items test

            orders.CheckIfThereIsCorrectPrice();                    //checking of correct price
        }