public void Test()
{
// 生成操作对象实例
IHandler handler1 = new InternalHandler();
IHandler handler2 = new DiscountHandler();
IHandler handler3 = new MailHandler();
IHandler handler4 = new RegularHandler();
// 组装链式的结构 internal-> mail-> discount-> regular-> null
handler1.Successor = handler3;
handler3.Successor = handler2;
handler2.Successor = handler4;
IHandler head = handler1;
Request request = new Request(20, PurchaseType.Mail);
head.HandleRequest(request);
Assert.AreEqual <double>(20 * 1.3, request.Price);
// 重新组织链表结构
handler1.Successor = handler1.Successor.Successor; // 短路掉Discount
request = new Request(20, PurchaseType.Discount);
head.HandleRequest(new Request(20, PurchaseType.Discount));
Assert.AreEqual <double>(20, request.Price); // 确认被短路的部分无法生效
}
static void Main()
{
double saleAmount;
char code;
DiscountHandler firstDel, secondDel, thirdDel;
firstDel = new DiscountHandler(StandardDiscount);
secondDel = new DiscountHandler(PreferredDiscount);
thirdDel = firstDel + secondDel;
Write("Enter amount of sale: ");
saleAmount = Convert.ToDouble(ReadLine());
Write("Enter \'S\' for standard discount, \'P\' for preferred discount,\nor \'X\' for eXtreme discount: ");
code = Convert.ToChar(ReadLine());
if (code == 'S')
{
firstDel(ref saleAmount);
}
else
{
if (code == 'P')
{
secondDel(ref saleAmount);
}
else
{
thirdDel(ref saleAmount);
}
}
WriteLine("New sale amount int: {0}", saleAmount.ToString("C2"));
}
public void ApplyDiscount(IDiscount discount, ref IArticle article)
{
ValidateInput(discount, article);
string userInput = GetUserInput();
var discountHandler = new DiscountHandler(r => userInput == "Yes", ExecuteDiscount);
discountHandler.Discount(discount, article);
}
public void ApplyDiscount(IDiscount discount, ref IArticle article)
{
ValidateInput(discount, article);
var castedDiscount = discount as PeriodDiscount;
var discountHandler = new DiscountHandler(r => IsBetweenDate(castedDiscount.StartDate, castedDiscount.EndDate), ExecuteDiscount);
discountHandler.Discount(discount, article);
}
public void ProductStorageLifeEnd(object source, DiscountHandler e)
{
if (e.StorageLife == 0)
{
JournalEntryProduct je = new JournalEntryProduct(e.Message, e.Price, e.Discount, e.StorageLife, e.Product);
DeadProducts.Add(je);
}
}
public static void Execute()
{
var handler3 = new DiscountHandler("3", 200, 6000);
var handler2 = new DiscountHandler("2", 100, 8000, handler3);
var handler1 = new DiscountHandler("1", 100, 10000, handler2);
Console.WriteLine(handler1.Discount(250, 8000));
Console.WriteLine(handler1.Discount(1000, 16000));
Console.WriteLine(handler3.Discount(300, 10000));
}
private void IncrementDiscountCounter(int _ProfileID, int _CouponID)
{
try
{
DiscountHandler handler = new DiscountHandler();
handler.IncrementDiscountCounter(_ProfileID, _CouponID);
}
catch (Exception ex)
{
}
}
private void IncrementDiscountCounter(int _ProfileID, int _CouponID)
{
try
{
DiscountHandler handler = new DiscountHandler();
handler.IncrementDiscountCounter(_ProfileID, _CouponID);
}
catch (Exception ex)
{
lblSystemMessage.Text = ex.Message;
}
}
public void EligibleForDiscount_NameNotStartsWithA_ReturnsFalse()
{
DiscountHandler handler = new DiscountHandler();
string name1 = "Bob Anthony";
string name2 = " curt Alanson";
bool discounted1 = handler.EligibleForDiscount(name1);
bool discounted2 = handler.EligibleForDiscount(name2);
Assert.IsFalse(discounted1, $"Expected name: {name1} to not be eligible for a discount");
Assert.IsFalse(discounted2, $"Expected name: {name2} to not be eligible for a discount");
}
public void EligibleForDiscount_NameStartsWithA_ReturnsTrue()
{
DiscountHandler handler = new DiscountHandler();
string name1 = "Adam Smith";
string name2 = " alan Curtis ";
bool discounted1 = handler.EligibleForDiscount(name1);
bool discounted2 = handler.EligibleForDiscount(name2);
Assert.IsTrue(discounted1, $"Expected name: {name1} to be eligible for a discount");
Assert.IsTrue(discounted2, $"Expected name: {name2} to be eligible for a discount");
}
public void StartDiscountFunctionsTest()
{
// Arrange
IDiscountHandler discountHandler = new DiscountHandler();
IDiscountHandler discountHandlerSec = new DiscountHandler(10M);
ShipmentHandler shipmentHandler = new ShipmentHandler();
var shipment = shipmentHandler.CreateShipment("2015-02-01 S MR");
var shipmentSec = shipmentHandler.CreateShipment("2015-02-01 S MR");
// Act
discountHandler.StartDiscountFunctions(shipment, 3M);
discountHandlerSec.StartDiscountFunctions(shipmentSec, 3M);
// Assert
Assert.AreEqual(shipment.ToString(), shipmentSec.ToString());
}
public void Test()
{
// 生成操作对象实例
IHandler handler1 = new InternalHandler();
IHandler handler2 = new DiscountHandler();
IHandler handler3 = new MailHandler();
IHandler handler4 = new RegularHandler();
//// 组装链式的结构 internal-> mail-> discount-> regular-> null
handler1.AddSuccessor(handler2);
handler2.AddSuccessor(handler3);
handler2.AddSuccessor(handler4);
IHandler head = handler1;
Request request = new Request(20, PurchaseType.Mail);
head.HandleRequest(request);
Assert.AreEqual <double>(20 * 1.3, request.Price);
}
static void Main(string[] args)
{
IHandler handler1 = new InternalHandler();
IHandler handler2 = new DiscountHandler();
IHandler handler3 = new MailHandler();
IHandler handler4 = new RegularHandler();
handler1.Next = handler3;
handler3.Next = handler2;
handler2.Next = handler4;
IHandler head = handler1;
Request request = new Request(20, PurchaseType.Mail);
head.HandleRequest(request);
Console.Write(request.Price); //26
//将MailHandler短路
handler1.Next = handler1.Next.Next;
request = new Request(20, PurchaseType.Mail);
head.HandleRequest(request);
Console.Write(request.Price); //20
}
public void Test()
{
// 生成操作对象实例、组装链式结构
IHandler handler1 = new InternalHandler();
IHandler handler2 = new DiscountHandler();
IHandler handler3 = new MailHandler();
IHandler handler4 = new RegularHandler();
handler1.Successor = handler3;
handler3.Successor = handler2;
handler2.Successor = handler4;
IHandler head = handler1;
handler1.HasBreakPoint = true;
handler1.Break += this.Break;
handler3.HasBreakPoint = true;
handler3.Break += this.Break;
Request request = new Request(20, PurchaseType.Regular);
head.HandleRequest(request);
currentType = PurchaseType.Internal; // 为第一个断点做的准备
Assert.AreEqual <double>(20, request.Price);
}
public void ProductDiscountChanged(object source, DiscountHandler e)
{
JournalEntryProduct je = new JournalEntryProduct(e.Message, e.Price, e.Discount, e.StorageLife, e.Product);
JournalEntryProducts.Add(je);
}
