public void RemovedLast()
{
for (int i = 1; i <= 1000; i++)
{
circularDoublyLinkedList.AddLast(i);
}
circularDoublyLinkedList.RemoveLast();
Assert.AreEqual(circularDoublyLinkedList.Count(), 999, "invalid count");
Assert.AreEqual(circularDoublyLinkedList.GetFirst(), 1, "invalid head element");
Assert.AreEqual(circularDoublyLinkedList.GetLast(), 999, "invalid tail element");
}
public void AddNullItem()
{
var list = new CircularDoublyLinkedList <string>();
list.AddFirst(null);
list.AddLast(null);
list.AddAfter(null, null);
list.AddBefore(null, null);
Assert.AreEqual(list.Count(), 4, "invalid count");
list.Remove(null);
list.RemoveFirst();
list.RemoveLast();
Assert.AreEqual(list.Count(), 1, "invalid count");
}
