public void FindLastNode()
{
string[] words =
{ "the", "fox", "jumps", "over", "jumps", "the", "dog" };
CircularDoubleLinkedListCollection <string> listTest = new CircularDoubleLinkedListCollection <string>(words);
ArrayCRUD.LinkedListNode <string> foundNode = listTest.FindLast("jumps");
Assert.Equal(listTest.Last.Previous.Previous.Value, foundNode.Value);
}
public void AddItemAfterNodeArgumentNullException()
{
string[] words =
{ "the", "fox", "jumps", "over", "the", "dog" };
CircularDoubleLinkedListCollection <string> listTest = new CircularDoubleLinkedListCollection <string>(words);
ArrayCRUD.LinkedListNode <string> node = null;
Action act = () => listTest.AddAfter(node, "old");
var exception = Assert.Throws <ArgumentNullException>(act);
Assert.Equal("node", exception.ParamName);
}
public void AddItemAfterNode()
{
string[] words =
{ "the", "fox", "jumps", "over", "the", "dog" };
CircularDoubleLinkedListCollection <string> listTest = new CircularDoubleLinkedListCollection <string>(words);
ArrayCRUD.LinkedListNode <string> first = listTest.First;
listTest.AddAfter(first, "old");
ArrayCRUD.LinkedListNode <string> addedNode = listTest.First.Next;
Assert.Contains("old", listTest);
Assert.Equal("old", addedNode.Value);
}
public void AddLastNode()
{
string[] words =
{ "the", "fox", "jumps", "over", "the", "dog" };
CircularDoubleLinkedListCollection <string> listTest = new CircularDoubleLinkedListCollection <string>(words);
ArrayCRUD.LinkedListNode <string> addedNode = new ArrayCRUD.LinkedListNode <string>("last added node");
listTest.AddLast(addedNode);
Assert.Equal("last added node", listTest.Last.Value);
Assert.Equal("the", listTest.Last.Next.Value);
Assert.Equal("last added node", listTest.First.Previous.Value);
}
public void AddNodeBeforeNode()
{
string[] words =
{ "the", "fox", "jumps", "over", "the", "dog" };
CircularDoubleLinkedListCollection <string> listTest = new CircularDoubleLinkedListCollection <string>(words);
ArrayCRUD.LinkedListNode <string> second = listTest.First.Next;
ArrayCRUD.LinkedListNode <string> addedNode = new ArrayCRUD.LinkedListNode <string>("nice");
listTest.AddBefore(second, addedNode);
ArrayCRUD.LinkedListNode <string> newAddedNode = listTest.First.Next;
Assert.Contains("nice", listTest);
Assert.Equal("nice", newAddedNode.Value);
}
public void AddNodeAfterNodeInvalidOperationException()
{
string[] anotherListElements =
{ "crazy", "lazy" };
string[] words =
{ "the", "fox", "jumps", "over", "the", "dog" };
CircularDoubleLinkedListCollection <string> listTest = new CircularDoubleLinkedListCollection <string>(words);
CircularDoubleLinkedListCollection <string> anotherList = new CircularDoubleLinkedListCollection <string>(anotherListElements);
ArrayCRUD.LinkedListNode <string> addedNode = anotherList.First;
Action act = () => listTest.AddAfter(listTest.First, addedNode);
var exception = Assert.Throws <InvalidOperationException>(act);
Assert.Equal("node belongs to another list", exception.Message);
}
