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
}
/// <summary>
/// Returns the right FileHandler according to specified file.
/// </summary>
/// <param name="fileName">file name</param>
/// <returns>RegulardHandler instance if it's from an unsupported type</returns>
public static FileHandler GetHandler(string fileName)
{
// TDU File
TduFile tduFile = TduFile.GetFile(fileName);
FileHandler handler = new RegularHandler();
// New mapping management
// DB
if (Regex.IsMatch(fileName, DB.FILENAME_PATTERN, RegexOptions.IgnoreCase))
{
handler = new DBHandler();
}
// BNK
else if (Regex.IsMatch(fileName, BNK.FILENAME_PATTERN, RegexOptions.IgnoreCase))
{
handler = new BNKHandler();
}
// DDS
else if (Regex.IsMatch(fileName, DDS.FILENAME_PATTERN, RegexOptions.IgnoreCase))
{
handler = new DDSHandler();
}
// 2DB
else if (Regex.IsMatch(fileName, _2DB.FILENAME_PATTERN, RegexOptions.IgnoreCase))
{
handler = new _2DBHandler();
}
// MAP
else if (Regex.IsMatch(fileName, MAP.FILENAME_PATTERN, RegexOptions.IgnoreCase))
{
handler = new MAPHandler();
}
// PCH
else if (Regex.IsMatch(fileName, PCH.FILENAME_PATTERN, RegexOptions.IgnoreCase))
{
handler = new PCHHandler();
}
// DB Resources
else if (Regex.IsMatch(fileName, DBResource.FILENAME_PATTERN, RegexOptions.IgnoreCase))
{
handler = new DBResourceHandler();
}
// DFE/IGE
/*else if (Regex.IsMatch(fileName, DFE.FILENAME_PATTERN, RegexOptions.IgnoreCase)
|| Regex.IsMatch(fileName, IGE.FILENAME_PATTERN, RegexOptions.IgnoreCase))
|| handler = new TrackHandler();*/
handler._TheTDUFile = tduFile;
return(handler);
}
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 BeforeEachTest()
{
_sut = new RegularHandler();
}
