static void Main(string[] args)
{
IBeverage beverage = new DarkRoast();
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Soy(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Whip(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Mocha(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Mocha(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Whip(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Whip(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Whip(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Whip(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Whip(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
beverage = new Whip(beverage);
System.Console.WriteLine($"{beverage.GetDescription()}: ${beverage.GetCost()}\n");
Console.ReadLine();
}
/// <summary>
/// # Motivation
/// I can now attach responsibilities to an object dynamically to add behaviour at runtime.
///
/// # Structure
/// Beverage
/// --> base class so all objects are of same type
/// CondimentDecorator : Bevarage
/// --> interchangeable with Beverage
///
/// # Sample Problem
/// A coffee shop wants to make an ordering system for all their drinks. Ofcourse there are a lot of combination with condiments/roasts.
/// We could create a base class and let all possible combinations inherit from the superclass and override their behaviour, but that would quickly become a mess.
///
/// # Solution
/// By creating a Decorator class which inherits from the baseclass (to effectively swap between types), I can now dynamically create composite objects at runtime.
/// To add a drink to the system:
/// 1. inherit from the base class, set instance fields in constructor
/// 2. override the 'Cost()' method to return desired cost
/// To add a condiment to the system:
/// 1. inherit from 'CondimentDecorator' (indirectly from base class as well
/// 2. add instance field from type Beverage
/// 3. initialize in constructor
/// 4. override GetDescription() and Cost() accordingly
/// To create a composite object at runtime:
/// 1. Create a new instance of a drink (Beverage)
/// 2. To add a condiment, assign the instance to a new instance of the condiment with itself as param
/// A. Beverage darkRoast = new DarkRoast();
/// B. darkRoast = new Mocha(darkRoast);
/// </summary>
public void Test()
{
Beverage beverage = new Espresso();
Console.WriteLine($"{beverage.GetDescription()} ${beverage.Cost()}");
Beverage beverage1 = new DarkRoast();
beverage1 = new Mocha(beverage1);
Console.WriteLine($"{beverage1.GetDescription()} ${beverage1.Cost()}");
Beverage beverage2 = new DarkRoast();
beverage2 = new Mocha(beverage2);
Console.WriteLine($"{beverage2.GetDescription()} ${beverage2.Cost()}");
beverage2 = new Mocha(beverage2);
Console.WriteLine($"{beverage2.GetDescription()} ${beverage2.Cost()}");
beverage2 = new Whip(beverage2);
Console.WriteLine($"{beverage2.GetDescription()} ${beverage2.Cost()}");
Beverage beverage3 = new HouseBlend();
beverage3 = new Soy(beverage3);
beverage3 = new Mocha(beverage3);
beverage3 = new Whip(beverage3);
Console.WriteLine($"{beverage3.GetDescription()} ${beverage3.Cost()}");
}
public void CostShouldReturnCorrectValue()
{
var expectedValue = 0.99M;
var expresso = new DarkRoast();
expresso.Cost().Should().Be(expectedValue);
}
public void add_milk_should_add_milk_to_coffee()
{
var darkRoast = new DarkRoast();
var coffee = new AddMilkCommand().Execute(darkRoast);
coffee.ShouldBeType<MilkDecorator>();
}
public void add_sugar_should_add_sugar_to_coffee()
{
var darkRoast = new DarkRoast();
var coffee = new AddSugarCommand().Execute(darkRoast);
coffee.ShouldBeType<SugarDecorator>();
}
public void CostIsComputedWithMocha()
{
DarkRoast darkRoast = new DarkRoast();
CondimentDecorator darkRoastWithMocha = new Mocha(darkRoast);
Assert.That(darkRoastWithMocha.Cost(), Is.EqualTo(2.5));
}
static void Main(string[] args)
{
Beverage beverage = new Expresso();
Console.WriteLine("Beverage #1: " + beverage.getDescription() + " $" + beverage.cost());
Beverage beverage2 = new DarkRoast();
beverage2 = new Mocha(beverage2);
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine("\nBeverage #2: " + beverage2.getDescription() + " $" + beverage2.cost());
Beverage beverage3 = new HouseBlend();
beverage3 = new Soy(beverage3);
beverage3 = new Mocha(beverage3);
beverage3 = new Whip(beverage3);
Console.WriteLine("\nBeverage #3: " + beverage3.getDescription() + " $" + beverage3.cost());
//keep window open
Console.ReadLine();
}
static void Main(string[] args)
{
Beverage beverage1 = new Espresso();
Console.WriteLine(beverage1);
Beverage beverage1Small = new Espresso();
beverage1Small.SetSize(CupSize.Small);
Console.WriteLine(beverage1Small);
Beverage beverage2 = new DarkRoast();
beverage2 = new Mocha(beverage2);
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine(beverage2);
Beverage beverage3 = new HouseBlend();
beverage3 = new Soy(beverage3);
beverage3 = new Mocha(beverage3);
beverage3 = new Whip(beverage3);
Console.WriteLine(beverage3);
Beverage beverage3Big = new HouseBlend(CupSize.Big);
beverage3Big = new Soy(beverage3Big);
beverage3Big = new Mocha(beverage3Big);
beverage3Big = new Whip(beverage3Big);
Console.WriteLine(beverage3Big);
}
static void Main(string[] args)
{
Beverage beverage = new Expresso();
Console.WriteLine(beverage.GetDescription() + " R$" + beverage.Cost());
Console.WriteLine();
Beverage beverage2 = new DarkRoast();
beverage2 = new Mocha(beverage2);
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine(beverage2.GetDescription() + " R$" + beverage2.Cost());
Console.WriteLine();
Beverage beverage3 = new HouseBlend();
beverage3 = new Soy(beverage3);
beverage3 = new Mocha(beverage3);
beverage3 = new Whip(beverage3);
Console.WriteLine(beverage3.GetDescription() + " R$" + beverage3.Cost());
Console.WriteLine();
Console.ReadKey();
}
public void DecoratorTest()
{
DIServiceLocator.Current.RegisterInstance(typeof(ITextProvider));
Support.Configure();
Beverage beverage = new Espresso();
beverage = new Mocha(beverage);
Assert.AreEqual(beverage.Description, "Espresso, Mocha");
Assert.AreEqual(beverage.Cost(), 2.19);
Beverage beverage2 = new DarkRoast();
beverage2 = beverage2.AddComponent <Mocha>();
beverage2 = beverage2.AddComponent <Mocha>();
beverage2 = beverage2.AddComponent <Whip>();
Assert.AreEqual(beverage2.Description, "Dark Roast, Mocha, Mocha, Whip");
Assert.AreEqual(beverage2.Cost(), 1.49);
Beverage beverage3 = new HouseBlend();
SupportExtensions.AddComponent <Soy>(ref beverage3);
SupportExtensions.AddComponent <Mocha>(ref beverage3);
SupportExtensions.AddComponent <Whip>(ref beverage3);
Assert.AreEqual(beverage3.Description, "House Blend Coffee, Soy, Mocha, Whip");
Assert.AreEqual(beverage3.Cost(), 1.34);
}
public void DescriptionWithMochaAndEspresso()
{
DarkRoast darkRoast = new DarkRoast();
CondimentDecorator darkRoastWithMocha = new Mocha(darkRoast);
CondimentDecorator darkRoastWithMochaAndMilk = new Milk(darkRoastWithMocha);
Assert.That(darkRoastWithMochaAndMilk.Description, Is.EqualTo("The Best Dark Roast, mocha, milk"));
}
public void CostIsComputedWithMochaAndEspresso()
{
DarkRoast darkRoast = new DarkRoast();
CondimentDecorator darkRoastWithMocha = new Mocha(darkRoast);
CondimentDecorator darkRoastWithMochaAndMilk = new Milk(darkRoastWithMocha);
Assert.That(darkRoastWithMochaAndMilk.Cost(), Is.EqualTo(3.25));
}
public void DarkRoastWithMochaWithWhipWithMilk()
{
DarkRoast beverage = new DarkRoast();
beverage.HasMocha = true;
beverage.HasWhip = true;
beverage.HasMilk = true;
Assert.AreEqual(1.39, beverage.Cost(), DELTA);
}
public void should_save_dark_roast()
{
var darkRoast = new DarkRoast();
darkRoast.Save();
Repository<DarkRoast>.LastItemSaved.ShouldBe(darkRoast);
}
public void GetDescriptionShouldReturnDescriptionWithTextSettedInConstructor()
{
var expectedValue = "Dark Roast Coffee";
var expresso = new DarkRoast();
expresso.GetDescription().Should()
.Be(expectedValue);
}
public void DarkRoastWithMochaWithWhipWithMilk()
{
Beverage beverage = new DarkRoast();
beverage = new Mocha(beverage);
beverage = new Whip(beverage);
beverage = new Milk(beverage);
Assert.AreEqual(1.39, beverage.Cost(),DELTA);
}
public void Cost_WithoutCondiments_ReturnNinetyNineCents()
{
var darkRoastCoffee = new DarkRoast();
var cost = darkRoastCoffee.Cost();
cost.Should().Be(0.99m);
}
public void price_should_be_7()
{
var darkRoast = new DarkRoast();
var price = darkRoast.GetPrice();
Assert.AreEqual(7m, price);
}
public void description_should_be_dark_roast()
{
var darkRoast = new DarkRoast();
var desc = darkRoast.GetDescription();
Assert.AreEqual("Dark Roast", desc);
}
public void DarkRoastWithMochaWithWhipWithMilk()
{
DarkRoast beverage = new DarkRoast();
beverage.HasMocha = true;
beverage.HasWhip = true;
beverage.HasMilk = true;
Assert.AreEqual(1.39, beverage.Cost(), DELTA);
}
public void TestDarkRoast()
{
Beverage beverage = new DarkRoast();
beverage = new Mocha(beverage);
beverage = new Soy(beverage);
Assert.AreEqual("Dark Roast Coffee, Mocha, Soy $1.34", beverage.GetDescription() +
" $" + beverage.Cost());
}
static void Main(string[] args)
{
Beverage beverage1 = new DarkRoast();
beverage1 = new Milk(beverage1);
beverage1 = new Whip(beverage1);
Console.WriteLine("Total Price: {0}, Description: {1}",
beverage1.Cost(), beverage1.GetDescription);
}
public void should_be_able_to_make_dark_roast_and_add_milk_with_delegate_command()
{
ICoffee coffee = new DarkRoast();
coffee = new DelegateCommand(c => c.AddSugar()).Execute(coffee);
coffee = new DelegateCommand(c => c.AddMilk()).Execute(coffee);
coffee.ShouldBeType<MilkDecorator>();
}
public void DarkRoastWithMochaWithWhipWithMilk()
{
Beverage beverage = new DarkRoast();
beverage = new Mocha(beverage);
beverage = new Whip(beverage);
beverage = new Milk(beverage);
Assert.AreEqual(1.39, beverage.Cost(), DELTA);
}
public void DarkRoastMochaWithWhip()
{
IBeverage roast = new DarkRoast(BeverageSize.Large);
roast = new Mocha(roast);
roast = new Whip(roast);
Debug.WriteLine(roast.Description);
Debug.WriteLine("Cost: " + roast.Cost);
}
public void Cost_WithMocha_ReturnOneDollarAndNineteenCents()
{
Beverage darkRoastCoffee = new DarkRoast();
darkRoastCoffee = new Mocha(darkRoastCoffee);
var cost = darkRoastCoffee.Cost();
cost.Should().Be(1.19m);
}
public void Main()
{
Beverage beverage = new Espresso();
Console.WriteLine(beverage.GetDescription() + " $" + beverage.Cost());
Beverage beverage1 = new DarkRoast();
beverage1 = new Mocha(beverage1);
}
public static void Run()
{
Beverage beverage = new Espresso();
Console.WriteLine(beverage.description + " $" + beverage.cost());
Console.WriteLine();
Beverage beverage2 = new DarkRoast();
beverage2 = new Mocha(beverage2);
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine(beverage2.description + " $" + beverage2.cost());
Console.WriteLine();
Beverage beverage3 = new HouseBlend();
beverage3 = new Soy(beverage3);
beverage3 = new Mocha(beverage3);
beverage3 = new Whip(beverage3);
Console.WriteLine(beverage3.description + " $" + beverage3.cost());
Console.WriteLine();
Beverage beverage4 = new HouseBlend();
beverage4.size = Beverage.Size.GRANDE;
Console.WriteLine("Setting size to: {0}", beverage4.size);
beverage4 = new Soy(beverage4);
beverage4 = new Mocha(beverage4);
beverage4 = new Whip(beverage4);
Console.WriteLine(beverage4.description + " $" + beverage4.cost());
Console.WriteLine();
Beverage beverage5 = new HouseBlend();
beverage5.size = Beverage.Size.TALL;
Console.WriteLine("Setting size to: {0}", beverage5.size);
beverage5 = new Soy(beverage5);
beverage5 = new Mocha(beverage5);
beverage5 = new Whip(beverage5);
Console.WriteLine(beverage5.description + " $" + beverage5.cost());
Console.WriteLine();
Beverage beverage6 = new HouseBlend();
beverage6.size = Beverage.Size.VENTI;
Console.WriteLine("Setting size to: {0}", beverage6.size);
beverage6 = new Soy(beverage6);
beverage6 = new Mocha(beverage6);
beverage6 = new Whip(beverage6);
Console.WriteLine(beverage6.description + " $" + beverage6.cost());
Console.WriteLine();
Console.ReadKey();
}
public void Test()
{
DarkRoast darkRoast = new DarkRoast();
Milk milk = new Milk(darkRoast);
Mocha mocha = new Mocha(milk);
Soy soy = new Soy(mocha);
Whip whip = new Whip(soy);
Assert.Equal("Dark Roast, Milk, Mocha, Soy, Whip",
whip.GetDescription());
}
public void DarkRoastPriceTest()
{
//Arrange
Beverage bev = new DarkRoast();
decimal price;
//Act
price = bev.GetPrice();
//Assert
Assert.AreEqual(price, 0.99m);
}
static void Main(string[] args)
{
var houseBlend = new HouseBlend();
houseBlend.Prepare();
Console.ReadLine();
var darkRoast = new DarkRoast();
darkRoast.Prepare();
Console.ReadLine();
}
public void DecoratorTest()
{
{
var m = new ConcreteComponent();
var decoratorA = new DecoratorA(m);
// decoratorA.Work();
var decoratorB = new DecoratorB(decoratorA);
decoratorB.Work();
}
{
// 我买了个苹果手机
Phone phone = new ApplePhone();
// 现在想贴膜了
var applePhoneWithSticker = new Sticker(phone);
// 扩展贴膜行为
applePhoneWithSticker.Print();
// 现在我想有挂件了
var applePhoneWithAccessories = new Accessories(phone);
// 扩展手机挂件行为
applePhoneWithAccessories.Print();
Console.WriteLine("----------------------");
// 现在我同时有贴膜和手机挂件了
var sticker = new Sticker(phone);
var applePhoneWithAccessoriesAndSticker = new Accessories(sticker);
applePhoneWithAccessoriesAndSticker.Print();
}
// {
// AbstractMessage message = new SqlMessage();
// var de = new CheckUserWrapper(message);
// Console.WriteLine(de.Get()[0].Message);
//
// var d2 = new CheckInputWrapper(message);
// Console.WriteLine(d2.Get()[0].Message);
//
// var m3 = new CheckUserWrapper(message);
// var m4 = new CheckInputWrapper(m3);
// Console.WriteLine(m4.Get()[0].Message);
// }
{
var dark = new DarkRoast("黑咖啡");
var sugar = new Sugar("加糖", dark);
Console.WriteLine($"{sugar.GetDescription()}{sugar.Cost()}元");;
var milk = new Milk("加奶", sugar);
Console.WriteLine($"{milk.GetDescription()}{milk.Cost()}元");;
}
}
public void DifferentSizesOfSoy_ShouldHaveDifferentCosts()
{
IBeverage tallBeverage = new DarkRoast();
tallBeverage = new Soy(tallBeverage);
Assert.AreEqual(1.09, tallBeverage.Cost()); //.99 + .10
IBeverage grandeBeverage = new DarkRoast();
grandeBeverage.Size = BeverageSize.Grande;
grandeBeverage = new Soy(tallBeverage);
Assert.AreEqual(1.14, tallBeverage.Cost()); //.99 + .15
}
public void DarkRoastWithSoyPriceTest()
{
//Arrange
Beverage bev = new DarkRoast();
bev = new Soy(bev);
decimal price;
//Act
price = bev.GetPrice();
//Assert
Assert.AreEqual(price, 1.14m);
}
public void DarkRoastWithMochaPriceTest()
{
//Arrange
Beverage bev = new DarkRoast();
bev = new SteamedMilk(bev);
decimal price;
//Act
price = bev.GetPrice();
//Assert
Assert.AreEqual(price, 1.09m);
}
static void DecoratorInvoke()
{
Beverage beverage = new DarkRoast(); // 焦烤咖啡
Console.WriteLine(beverage.GetDescription() + " $" + beverage.Cost());
beverage = new Mocha(beverage); //添加摩卡
Console.WriteLine(beverage.GetDescription() + " $" + beverage.Cost());
beverage = new Milk(beverage); //添加牛奶
Console.WriteLine(beverage.GetDescription() + " $" + beverage.Cost());
Beverage beverage2 = new Milk(new HouseBlend()); // 家庭混合咖啡加摩卡加牛奶
Console.WriteLine(beverage2.GetDescription() + " $" + beverage2.Cost());
}
public void DarkRoast_ShouldBeExpressoAndCostNinetyNineCents_WhenIsInstantiate()
{
//Arrange
Beverage beverage = new DarkRoast();
//Act
var description = beverage.GetDescription();
var cost = beverage.Cost();
//Assert
description.Should().Be("Dark Roast Coffee");
cost.Should().Be(.99);
}
public void BeverageObjectDescription_ReturnsCorrectName()
{
IBeverage roast = new DarkRoast();
Assert.AreEqual("Dark Roast Coffee", roast.Description);
IBeverage coffee = new SimpleCoffee();
Assert.AreEqual("Simple Black Coffee", coffee.Description);
IBeverage espresso = new Espresso();
Assert.AreEqual("Espresso", espresso.Description);
}
static void Main(string[] args)
{
Beverage beverage = new Espresso();
System.Console.WriteLine(beverage.getDescription() + " $" + beverage.cost());
Beverage beverage2 = new DarkRoast();
beverage2 = new Mocha(beverage2);
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
System.Console.WriteLine(beverage2.getDescription() + " $" + beverage2.cost());
}
public IBeverage GetCoffee(StoreType storeType, BeverageType beverageType)
{
IBeverage coffee = null;
switch(storeType)
{
case StoreType.RegularStore :
switch (beverageType)
{
case BeverageType.HouseBlend:
coffee = new HouseBlend();
break;
case BeverageType.Roast:
coffee = new DarkRoast();
break;
}
break;
case StoreType.ExoticStore:
switch (beverageType)
{
case BeverageType.HouseBlend:
coffee = new SpecialHouseBlend();
break;
case BeverageType.Roast:
coffee = new AmazonRoast();
break;
}
break;
}
return coffee;
}
private static void WithDecorator()
{
IBeverage roast = new DarkRoast();
Console.WriteLine("{0} cost {1}", roast.GetDescription(), roast.GetPrice());
Console.ReadLine();
roast = new MilkDecorator(roast);
Console.WriteLine("{0} cost {1}", roast.GetDescription(), roast.GetPrice());
Console.ReadLine();
roast = new SugarDecorator(roast);
Console.WriteLine("{0} cost {1}", roast.GetDescription(), roast.GetPrice());
Console.ReadLine();
IBeverage house = new HouseBlend();
house = new MilkDecorator(house);
Console.WriteLine("{0} cost {1}", house.GetDescription(), house.GetPrice());
Console.ReadLine();
}
public void adding_milk_using_extension_should_update_dark_roast_price()
{
var darkRoast = new DarkRoast().AddMilk();
darkRoast.GetPrice().ShouldBe(7.5m);
}
