public void TestHouseBlend()
        {
            Beverage beverage = new HouseBlend();

            beverage = new Mocha(beverage);
            beverage = new SteamedMilk(beverage);
            Assert.AreEqual("House Blend Coffee, Mocha, Steamed Milk $1.19", beverage.GetDescription() +
                            " $" + beverage.Cost());
        }