static void Main(string[] args)
{
Console.WriteLine("Chain of Responsibility");
Console.WriteLine("Fashion Shop Example");
var discountApplier = new DiscountApplier();
AddDiscounts(discountApplier);
var shirt = new Shirt(discountApplier, 10m);
var jeans = new Jeans(discountApplier, 30m);
var sunglasses = new Sunglasses(discountApplier, 35m);
PrintPrice();
void PrintPrice()
{
var sw = new Stopwatch();
sw.Start();
while (sw.ElapsedMilliseconds < 20000)
{
Console.SetCursorPosition(0, 3);
Console.WriteLine($"\r{shirt._name} price: $ {shirt.Price} ");
Console.WriteLine($"\r{jeans._name} price: $ {jeans.Price} ");
Console.WriteLine($"\r{sunglasses._name} price: $ {sunglasses.Price} ");
Thread.Sleep(500);
}
sw.Stop();
}
}
public void Should_notify_user_when_apply_discount()
{
List <User> users = new List <User> {
new User()
};
var notifier = new VerifyNotifier();;
DiscountApplier discountApplier = new DiscountApplier(notifier, users);
var item = new Item();
discountApplier.Apply(item, 20);
Assert.IsTrue(notifier.IsCalledForAll(users));
}
public void Should_notify_user_when_apply_discount()
{
List <User> users = new List <User> {
new User(), new User()
};
var notifier = Substitute.For <INotifier>();
DiscountApplier discountApplier = new DiscountApplier(notifier, users);
var item = new Item();
discountApplier.Apply(item, 20);
users.ForEach(
user => notifier.Received().Notify(user));
}
private static void AddDiscounts(DiscountApplier discountApplier)
{
var firstPurchaseDiscount = new FirstPurchaseDiscount(discountApplier);
firstPurchaseDiscount.Add();
var flashSale = new FlashSale(discountApplier, 5000);
flashSale.Add();
var dailySale = new DailySale(discountApplier);
dailySale.Add();
}
public void Should_Notify_twice_when_having_two_users_to_notify()
{
List <User> users = new List <User>
{
new User(),
new User()
};
var notifier = Substitute.For <INotifier>();
DiscountApplier discountApplier = new DiscountApplier(notifier, users);
var item = new Item();
discountApplier.Apply(item, 20);
notifier.Received(users.Count).Notify(Arg.Any <User>());
}
public void Should_Notify_twice_when_having_two_users_to_notify()
{
List <User> users = new List <User>
{
new User(),
new User()
};
var notifier = new CounterNotifier();;
DiscountApplier discountApplier = new DiscountApplier(notifier, users);
var item = new Item();
discountApplier.Apply(item, 20);
Assert.AreEqual(users.Count, notifier.CallCount);
}
public void TestProperyPatternAgainstOldStyleCode()
{
ZonalClient[] clients = new[]
{
new ZonalClient {
Purchases = 141, Zone = Zones.Z2, Company = Companies.C1
},
new ZonalClient {
Purchases = 14, Zone = Zones.Z3, Company = Companies.C2
},
new ZonalClient {
Purchases = 400, Zone = Zones.Z2, Company = Companies.C3
},
new ZonalClient {
Purchases = 600, Zone = Zones.Z3, Company = Companies.C2
},
new ZonalClient {
Purchases = 55, Zone = Zones.Z1, Company = Companies.C1
}
};
var applier = new DiscountApplier();
Assert.All(clients, c => Assert.Equal(applier.OldStyle(c), applier.PropertyPattern(c)));
}
public Sunglasses(DiscountApplier discountApplier, decimal price) : base(discountApplier)
{
_price = price;
_name = ItemNames.Sunglasses;
}
public Shirt(DiscountApplier discountApplier, decimal price) : base(discountApplier)
{
_price = price;
_name = ItemNames.Shirt;
}
public Jeans(DiscountApplier discountApplier, decimal price) : base(discountApplier)
{
_price = price;
_name = ItemNames.Jeans;
}
public Item(DiscountApplier discountApplier)
{
_discountApplier = discountApplier;
}