public void dark_roast_with_sugar_and_milk()
 {
     var darkRoast = new SugarDecorator(new MilkDecorator(new DarkRoast()));
     darkRoast.GetPrice().ShouldBe(7.7m);
 }
 public void dark_roast_with_sugar()
 {
     var darkRoast = new SugarDecorator(new DarkRoast());
     darkRoast.GetPrice().ShouldBe(7.2m);
 }