public void BasicCoffeeWithChocolateShouldHaveDescription(string expected)
 {
     var coffee =new  WithChocolate(new BasicCoffee());
        Assert.AreEqual(expected, coffee.Description);
 }
 public void BasicCoffeeWithChocolateShouldHaveCostOf(decimal expected)
 {
     var coffee = new WithChocolate(new BasicCoffee());
     Assert.AreEqual(expected, coffee.CalculateCost());
 }