public void SetHandlerSuccessor_WhenSetSuccessorIsCalled()
{
var concreteHandlerOne = new ConcreteHandlerOne();
var concreteHandlerTwo = new ConcreteHandlerTwo();
concreteHandlerOne.SetSuccessor(concreteHandlerTwo);
concreteHandlerOne.Successor.Should().Be(concreteHandlerTwo);
}
public void ReturnMinusOneIfSuccessorIsNotSet_WhenHandleRequestIsCalled()
{
var requestType = 3;
var expectedConcreteHandlerNumber = -1;
var concreteHandlerTwo = new ConcreteHandlerTwo();
var handledBy = concreteHandlerTwo.Handle(requestType);
handledBy.Should().Be(expectedConcreteHandlerNumber);
}
private static void ChainOfResponsibilityExample()
{
var handlerOne = new ConcreteHandlerOne();
var handlerTwo = new ConcreteHandlerTwo();
handlerOne.SetSuccessor(handlerTwo);
handlerTwo.SetSuccessor(handlerOne);
handlerOne.HandleRequest("PrintDate");
handlerOne.HandleRequest("PrintGreeting");
}
public void ReturnTwoForRequestsOfTypeTwo_WhenHandleRequestIsCalled()
{
var requestType = 2;
var expectedConcreteHandlerNumber = 2;
var concreteHandlerOne = new ConcreteHandlerOne();
var concreteHandlerTwo = new ConcreteHandlerTwo();
concreteHandlerOne.SetSuccessor(concreteHandlerTwo);
var handledBy = concreteHandlerOne.Handle(requestType);
handledBy.Should().Be(expectedConcreteHandlerNumber);
}
public List <int> ProcessRequests(List <int> requestTypes)
{
var handlers = new List <int>();
var concreteHandlerOne = new ConcreteHandlerOne();
var concreteHandlerTwo = new ConcreteHandlerTwo();
var concreteHandlerThree = new ConcreteHandlerThree();
concreteHandlerOne.SetSuccessor(concreteHandlerTwo);
concreteHandlerTwo.SetSuccessor(concreteHandlerThree);
foreach (var requestType in requestTypes)
{
handlers.Add(concreteHandlerOne.Handle(requestType));
}
return(handlers);
}
static void Main(string[] args)
{
// Setup Chain of Responsibility
Handler h1 = new ConcreteHandlerOne();
Handler h2 = new ConcreteHandlerTwo();
Handler h3 = new ConcreteHandlerThree();
h1.setSuccessor(h2);
h2.setSuccessor(h3);
// Send requests to the chain
h1.handleRequest(new Request("Negative Value", -1));
h1.handleRequest(new Request("Zero Value", 0));
h1.handleRequest(new Request("Positive Value", 1));
h1.handleRequest(new Request("Positive Value", 2));
h1.handleRequest(new Request("Negative Value", -5));
Console.ReadKey();
}
static void Main(string[] args)
{
// Setup Chain of Responsibility
Handler h1 = new ConcreteHandlerOne();
Handler h2 = new ConcreteHandlerTwo();
Handler h3 = new ConcreteHandlerThree();
h1.setSuccessor(h2);
h2.setSuccessor(h3);
// Send requests to the chain
h1.handleRequest(new Request("Negative Value", -1));
h1.handleRequest(new Request("Zero Value", 0));
h1.handleRequest(new Request("Positive Value", 1));
h1.handleRequest(new Request("Positive Value", 2));
h1.handleRequest(new Request("Negative Value", -5));
Console.ReadKey();
}
