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 #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() + " $" + beverage3.cost());
//keep window open
Console.ReadLine();
}
public void CostShouldReturnEigthyNineCents()
{
var expectedValue = 0.89M;
var houseBlend = new HouseBlend();
houseBlend.Cost().Should().Be(expectedValue);
}
/// <summary>
/// # Motivation
/// I can now attach responsibilities to an object dynamically to add behaviour at runtime.
///
/// # Structure
/// Beverage
/// --> base class so all objects are of same type
/// CondimentDecorator : Bevarage
/// --> interchangeable with Beverage
///
/// # Sample Problem
/// A coffee shop wants to make an ordering system for all their drinks. Ofcourse there are a lot of combination with condiments/roasts.
/// We could create a base class and let all possible combinations inherit from the superclass and override their behaviour, but that would quickly become a mess.
///
/// # Solution
/// By creating a Decorator class which inherits from the baseclass (to effectively swap between types), I can now dynamically create composite objects at runtime.
/// To add a drink to the system:
/// 1. inherit from the base class, set instance fields in constructor
/// 2. override the 'Cost()' method to return desired cost
/// To add a condiment to the system:
/// 1. inherit from 'CondimentDecorator' (indirectly from base class as well
/// 2. add instance field from type Beverage
/// 3. initialize in constructor
/// 4. override GetDescription() and Cost() accordingly
/// To create a composite object at runtime:
/// 1. Create a new instance of a drink (Beverage)
/// 2. To add a condiment, assign the instance to a new instance of the condiment with itself as param
/// A. Beverage darkRoast = new DarkRoast();
/// B. darkRoast = new Mocha(darkRoast);
/// </summary>
public void Test()
{
Beverage beverage = new Espresso();
Console.WriteLine($"{beverage.GetDescription()} ${beverage.Cost()}");
Beverage beverage1 = new DarkRoast();
beverage1 = new Mocha(beverage1);
Console.WriteLine($"{beverage1.GetDescription()} ${beverage1.Cost()}");
Beverage beverage2 = new DarkRoast();
beverage2 = new Mocha(beverage2);
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine($"{beverage2.GetDescription()} ${beverage2.Cost()}");
Beverage beverage3 = new HouseBlend();
beverage3 = new Soy(beverage3);
beverage3 = new Mocha(beverage3);
beverage3 = new Whip(beverage3);
Console.WriteLine($"{beverage3.GetDescription()} ${beverage3.Cost()}");
}
static void Main(string[] args)
{
Beverage beverage = new Expresso();
Console.WriteLine(beverage.GetDescription() + " R$" + 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);
}
static void Main(string[] args)
{
Console.WriteLine("Strategy Pattern");
var modelDuck = new ModelDuck();
modelDuck.PerformFly();
modelDuck.PerformQuack();
modelDuck.SetFlyBehavior(new ModelFly());
modelDuck.PerformFly();
Console.WriteLine("Observer Patterns!");
var weatherData = new WeatherData();
var observerone = new OberverElement(weatherData);
observerone.Subscript();
var observertwo = new OberverOtherElement(weatherData);
observertwo.Subscript();
weatherData.SetMeasurementsChanged((float)35.50, (float)20.00, (float)264.00);
observerone.UnSubscript();
weatherData.SetMeasurementsChanged((float)37.50, (float)30.00, (float)260.00);
Console.WriteLine("Decorator Patterns");
var beverage = new Espresso();
Console.WriteLine(beverage.GetDescription());
BeverageBase beverage2 = new HouseBlend();
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine(beverage2.GetDescription() + "$" + beverage2.Cost());
}
public void GetDescriptionShouldReturnDescriptionWithTextSettedInConstructor()
{
var expectedValue = "House Blend Coffee";
var houseBlend = new HouseBlend();
houseBlend.GetDescription().Should()
.Be(expectedValue);
}
public void HouseBlendWithSoyWithMochaWithWhip()
{
Beverage beverage = new HouseBlend();
beverage = new Soy(beverage);
beverage = new Mocha(beverage);
beverage = new Whip(beverage);
Assert.AreEqual(1.34, beverage.Cost(),DELTA);
}
public void HouseBlendWithSoyWithMochaWithWhip()
{
HouseBlend beverage = new HouseBlend();
beverage.HasSoy = true;
beverage.HasMocha = true;
beverage.HasWhip = true;
Assert.AreEqual(1.34, beverage.Cost(), DELTA);
}
public void TestHouseBlend()
{
Beverage beverage = new HouseBlend();
beverage = new Mocha(beverage);
beverage = new SteamedMilk(beverage);
Assert.AreEqual("House Blend Coffee, Mocha, Steamed Milk $1.09", beverage.GetDescription() +
" $" + beverage.Cost());
}
public void HouseBlendWithSoyWithMochaWithWhip()
{
Beverage beverage = new HouseBlend();
beverage = new Soy(beverage);
beverage = new Mocha(beverage);
beverage = new Whip(beverage);
Assert.AreEqual(1.34, beverage.Cost(), DELTA);
}
public void HouseBlendWithSoyWithMochaWithWhip()
{
HouseBlend beverage = new HouseBlend();
beverage.HasSoy = true;
beverage.HasMocha = true;
beverage.HasWhip = true;
Assert.AreEqual(1.34, beverage.Cost(), DELTA);
}
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 + " $" + beverage6.cost());
Console.WriteLine();
Console.ReadKey();
}
public void HouseBlendSoyMochaWhip()
{
IBeverage houseBlend = new HouseBlend(BeverageSize.Small);
houseBlend = new Soy(houseBlend);
houseBlend = new Whip(houseBlend);
houseBlend = new Mocha(houseBlend);
Debug.WriteLine(houseBlend.Description);
Debug.WriteLine("Cost: " + houseBlend.Cost);
}
public void HouseBlendPriceTest()
{
//Arrange
Beverage bev = new HouseBlend();
decimal price;
//Act
price = bev.GetPrice();
//Assert
Assert.AreEqual(price, 0.89m);
}
public void HouseBlend_WhenAddDecorators_ValueIsIncreased()
{
Beverage houseBlend = new HouseBlend();
decimal value = houseBlend.Value();
houseBlend = new Soy(houseBlend);
houseBlend = new Mocha(houseBlend);
Assert.NotEqual(value, houseBlend.Value());
Assert.Equal(houseBlend.Description, houseBlend.GetDescription());
}
public void CanGetDescriptionOfBeverage()
{
// Arrange
var houseBlend = new HouseBlend();
// Act
var description = houseBlend.Description;
// Assert
Assert.That(description, Is.EqualTo("House Blend"));
}
public void CondimentsDescriptionShouldBeApplied()
{
var expected = "This is a HouseBlend with Almond Milk";
IBeverage houseBlend = new HouseBlend();
houseBlend = new AlmondMilk(houseBlend);
var result = houseBlend.GetDescription();
result.Should().Be(expected);
}
public void DoubleMochaSoyLatteWithWhip()
{
IBeverage houseBlend = new HouseBlend(BeverageSize.Medium);
houseBlend = new Soy(houseBlend);
houseBlend = new Whip(houseBlend);
houseBlend = new Mocha(houseBlend);
houseBlend = new Mocha(houseBlend);
Debug.WriteLine(houseBlend.Description);
Debug.WriteLine("Cost: " + houseBlend.Cost);
}
public void CondimentsCostShouldBeApplied()
{
var expected = 3.2;
IBeverage houseBlend = new HouseBlend();
houseBlend = new AlmondMilk(houseBlend);
var result = houseBlend.Cost();
result.Should().Be(expected);
}
private static void RunDecoratorPattern()
{
Beverage beverage = new Espresso();
Console.WriteLine($"{beverage.GetDescription()} ${beverage.Cost()}");
Beverage beverage1 = new HouseBlend();
beverage1 = new Mocha(beverage1);
beverage1 = new Mocha(beverage1);
beverage1 = new Whip(beverage1);
Console.WriteLine($"{beverage1.GetDescription()} ${beverage1.Cost()}");
}
public void HouseBlend_ShouldBeExpressoAndCostEightyNineCents_WhenIsInstantiate()
{
//Arrange
Beverage beverage = new HouseBlend();
//Act
var description = beverage.GetDescription();
var cost = beverage.Cost();
//Assert
description.Should().Be("House Blend Coffee");
cost.Should().Be(.89);
}
public static void Decorator()
{
var espresso = new Espresso();
Console.WriteLine($"{espresso.Description} ${espresso.Cost()}");
Beverage houseblend = new HouseBlend();
houseblend = new Mocha(houseblend);
houseblend = new Mocha(houseblend);
houseblend = new Soy(houseblend);
Console.WriteLine($"{houseblend.Description} ${houseblend.Cost()}");
}
public void StarBuzzCoffee()
{
Beverage espresso = new Espresso();
Console.WriteLine(espresso.GetDescription() + " $" + espresso.Cost());
Beverage houseBlend = new HouseBlend();
houseBlend = new Soy(houseBlend);
houseBlend = new Mocha(houseBlend);
houseBlend = new Whip(houseBlend);
Console.WriteLine(houseBlend.GetDescription() + " $" + houseBlend.Cost());
}
public void HouseBlendWithMochaPriceTest()
{
//Arrange
Beverage bev = new HouseBlend();
bev = new Mocha(bev);
decimal price;
//Act
price = bev.GetPrice();
//Assert
Assert.AreEqual(price, 1.09m);
}
static void RunDecorator()
{
Beverage beverage = new Expresso();
Console.WriteLine(beverage.GetDescription() + " $ " + beverage.Cost());
Beverage beverage2 = new HouseBlend();
beverage2 = new Mocha(beverage2);
beverage2 = new Soy(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine(beverage2.GetDescription() + " $ " + beverage2.Cost());
}
static void Main(string[] args)
{
var beverage = new DarkRoast();
Console.WriteLine($"Description: {beverage.GetDescription()}; Cost: {beverage.Cost()}");
var beverage2 = new HouseBlend();
var decorator1 = new Mocha(beverage2);
var decorator2 = new Milk(decorator1);
Console.WriteLine($"Description: {decorator2.GetDescription()}; Cost: {decorator2.Cost()}");
Console.ReadKey();
}
static void Main(string[] args)
{
Beverage essp = new Espresso();
Console.WriteLine(essp.GetDiscription() + "\t" + essp.cost().ToString());
Beverage houseB = new HouseBlend();
Console.WriteLine(houseB.GetDiscription() + "\t" + houseB.cost().ToString());
essp = new Whip(essp);
Console.WriteLine(essp.GetDiscription() + "\t" + essp.cost().ToString());
essp = new SteamMilk(essp);
Console.WriteLine(essp.GetDiscription() + "\t" + essp.cost().ToString());
houseB = new Soy(houseB);
Console.WriteLine(houseB.GetDiscription() + "\t" + houseB.cost().ToString());
// Create book
Book book = new Book("Worley", "Inside ASP.NET", 10);
book.Display();
// Create video
Video video = new Video("Spielberg", "Jaws", 23, 92);
video.Display();
// Make video borrowable, then borrow and display
Console.WriteLine("\nMaking video borrowable:");
Borrowable borrowvideo = new Borrowable(video);
borrowvideo.BorrowItem("Customer #1");
borrowvideo.BorrowItem("Customer #2");
borrowvideo.BorrowItem("Customer #3");
borrowvideo.Display();
borrowvideo.ReturnItem("Customer #1");
borrowvideo.ReturnItem("Customer #2");
borrowvideo.Display();
// Wait for user
Console.ReadKey();
while (true)
{
}
}
static void Main(string[] args)
{
Beverage beverage = new Espresso();
Console.WriteLine($"{beverage.GetDescription()} ${beverage.Cost()}");
Beverage beverage1 = new HouseBlend();
beverage1 = new Soy(beverage1);
beverage1 = new Mocha(beverage1);
beverage1 = new Mocha(beverage1);
Console.WriteLine($"{beverage1.GetDescription()} ${beverage1.Cost()}");
Console.ReadLine();
}
public void DoubleMochaSoyLatteWithWhipPriceTest()
{
//Arrange
Beverage bev = new HouseBlend();
bev = new Soy(bev);
bev = new Mocha(bev);
bev = new Mocha(bev);
bev = new Whip(bev);
decimal price;
//Act
price = bev.GetPrice();
//Assert
Assert.AreEqual(price, 1.54m);
}
static void Main(string[] args)
{
Beverage beverage = new Espresso();
Console.WriteLine(beverage.GetDescription() + " $" + beverage.Cost());
Beverage beverage2 = new HouseBlend();
beverage2 = new Mocha(beverage2);
beverage2 = new Soy(beverage2);
beverage2 = new Whip(beverage2);
Console.WriteLine(beverage2.GetDescription() + " $" + beverage2.Cost());
Beverage beverage3 = new DarkRoase();
beverage3 = new Mocha(beverage3);
beverage3 = new Mocha(beverage3);
beverage3 = new Whip(beverage3);
Console.WriteLine(beverage3.GetDescription() + " $" + beverage3.Cost());
//Console.ReadLine();
Console.WriteLine("---------------------\n");
// 我买了个苹果手机
Phone phone = new ApplePhone();
// 现在想贴膜了
Decorator applePhoneWithSticker = new Sticker(phone);
// 扩展贴膜行为
applePhoneWithSticker.Print();
Console.WriteLine("----------------------\n");
// 现在我想有挂件了
Decorator applePhoneWithAccessories = new Accessories(phone);
// 扩展手机挂件行为
applePhoneWithAccessories.Print();
Console.WriteLine("----------------------\n");
// 现在我同时有贴膜和手机挂件了
Sticker sticker = new Sticker(phone);
Accessories applePhoneWithAccessoriesAndSticker = new Accessories(sticker);
applePhoneWithAccessoriesAndSticker.Print();
Console.ReadLine();
}
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();
}
