public void TestExpressoWithSize()
 {
     BeverageSize beverageSize = BeverageSize.GRANDE;
     Beverage beverage = new Expresso();
     beverage.Size = beverageSize;
     beverage = new Mocha(beverage);
     beverage.Size = beverageSize;
     Assert.AreEqual("Expresso, Mocha $1.9",beverage.GetDescription() +
         " $" + beverage.Cost());
 }
 public void TestExpresso()
 {
     Beverage beverage = new Expresso();
     Assert.AreEqual("Expresso $1.5",beverage.GetDescription() +
         " $" + beverage.Cost());
 }