public void ChangeQuantity_CorrectValue()
        {
            shoppingCartPage.UpdateQuantity(shoppingCartBO);
            String expectedResult = "Success: You have modified your shopping cart!\r\n×";

            Assert.AreEqual(expectedResult, shoppingCartPage.SuccessfullyUpdatedText);
            Double expectedTotal = Math.Round(shoppingCartPage.CalculateLineTotal(shoppingCartBO), 0);
            Double actualTotal   = Math.Round(shoppingCartPage.GetTotal(shoppingCartBO), 0);

            Assert.AreEqual(expectedTotal, actualTotal);
        }