public void FindNext_Returns_Null_When_The_Last_Node_Is_Supplied()
{
var node = new RequestChainNode(firstRequestChainPart.GetType());
var next = findNextRequestChainPart.FindNext(node, firstRequestChainPart, resolveDependencies, request);
next.ShouldBeNull();
}
public void AddAfter(RequestChainNode requestChainPart)
{
if (requestChainPart == null) return;
requestChainPart.Previous = this;
requestChainPart.Next = Next;
Next = requestChainPart;
}
public void FindNext_Returns_Second_When_First_Is_Supplied()
{
var node = new RequestChainNode(firstRequestChainPart.GetType());
node.AddAfter(new RequestChainNode(thirdRequestChainPart.GetType()));
node.AddAfter(new RequestChainNode(secondRequestChainPart.GetType()));
var next = findNextRequestChainPart.FindNext(node, firstRequestChainPart, resolveDependencies, request);
next.ShouldEqual(secondRequestChainPart);
}
public void FindNext_Returns_ThirdNode_When_Second_Node_Isnt_Used()
{
secondRequestChainPart.ShouldUseValue = false;
var node = new RequestChainNode(firstRequestChainPart.GetType());
node.AddAfter(new RequestChainNode(thirdRequestChainPart.GetType()));
node.AddAfter(new RequestChainNode(secondRequestChainPart.GetType()));
var next = findNextRequestChainPart.FindNext(node, firstRequestChainPart, resolveDependencies, request);
next.ShouldEqual(thirdRequestChainPart);
}
public void FindNext_Returns_Null_When_Second_Is_Supplied_And_Third_Isnt_Used()
{
thirdRequestChainPart.ShouldUseValue = false;
var node = new RequestChainNode(firstRequestChainPart.GetType());
node.AddAfter(new RequestChainNode(thirdRequestChainPart.GetType()));
node.AddAfter(new RequestChainNode(secondRequestChainPart.GetType()));
var next = findNextRequestChainPart.FindNext(node, secondRequestChainPart, resolveDependencies, request);
next.ShouldBeNull();
}
public IRequestChainPart FindNext(RequestChainNode firstNode, IRequestChainPart requestChainPart, IResolveDependencies resolveDependencies, IRequest request)
{
if (requestChainPart != null)
{
firstNode = firstNode.Find(requestChainPart.GetType()).Next;
if (firstNode == null)
return null;
}
var currentRequestChainPart = (IRequestChainPart)resolveDependencies.Resolve(firstNode.Item);
while (!currentRequestChainPart.ShouldUse(request))
{
firstNode = firstNode.Find(currentRequestChainPart.GetType()).Next;
if (firstNode == null) return null;
currentRequestChainPart = (IRequestChainPart)resolveDependencies.Resolve(firstNode.Item);
}
return currentRequestChainPart;
}
