public void InsertLastTwoValues_Expect_CountEqualTwo()
{
var linkedList = new WsDoubleLinkedList();
linkedList.InsertLast(2);
linkedList.InsertLast(3);
Assert.Equal(2, linkedList.Count);
}
public void InsertLastTwoValues_Expect_LastReferencePrevious()
{
var linkedList = new WsDoubleLinkedList();
linkedList.InsertLast(2);
linkedList.InsertLast(3);
Assert.Equal(2, linkedList.Tail.Previous.Value);
}
public void InsertLastTwoValues_Expect_LastEqualTail_FirstEqualHead()
{
var linkedList = new WsDoubleLinkedList();
linkedList.InsertLast(2);
linkedList.InsertLast(3);
Assert.Equal(2, linkedList.Head.Value);
Assert.Equal(3, linkedList.Tail.Value);
}
public void RemoveValue_Expect_CountDecreasesBy1()
{
int valueToBeRemoved = 3;
var linkedList = new WsDoubleLinkedList();
linkedList.InsertLast(2);
linkedList.InsertLast(valueToBeRemoved);
linkedList.Remove(valueToBeRemoved);
Assert.Equal(1, linkedList.Count);
}
public void RemoveValue_Expect_ValueWasRemoved()
{
int valueToBeRemoved = 3;
var linkedList = new WsDoubleLinkedList();
linkedList.InsertLast(2);
linkedList.InsertLast(valueToBeRemoved);
linkedList.Remove(valueToBeRemoved);
var exists = linkedList.ToArray().Any(x => x == valueToBeRemoved);
Assert.False(exists);
}
public void LinkedListToArray_Expect_AllValuesIncluded()
{
var linkedList = new WsDoubleLinkedList();
linkedList.InsertLast(2);
linkedList.InsertLast(3);
linkedList.InsertFirst(6);
var arr = linkedList.ToArray();
Assert.Equal(6, arr[0]);
Assert.Equal(2, arr[1]);
Assert.Equal(3, arr[2]);
}
public void InsertLast_Expect_EqualTail()
{
var linkedList = new WsDoubleLinkedList();
linkedList.InsertLast(2);
Assert.NotNull(linkedList.Tail);
Assert.Equal(2, linkedList.Tail.Value);
}