public void RemovingLastTailIsShiftedToNewValue()
{
var list = new CircularlyLinkedList <int>();
list.AddFirst(1);
list.AddLast(2);
list.AddLast(3);
list.AddLast(4);
list.RemoveLast();
Assert.Equal(3, list.Tail.Value);
}
public void AddingAndRemovingIncrementsAndDecrementsTheCount()
{
var list = new CircularlyLinkedList <int>();
list.AddFirst(1);
list.AddAfter(list.Find(1), 3);
list.AddBefore(list.Find(3), 2);
list.AddLast(4);
Assert.Equal(4, list.Count);
list.RemoveFirst();
list.RemoveLast();
list.Remove(3);
Assert.Equal(1, list.Count);
}