public void TestMethod12()
{
DNode head = null;
head = DoublyLinkedListOps.AddTail(head, 1);
head = DoublyLinkedListOps.DeleteFirstOf(head, 1);
Assert.IsNull(head);
}
public void TestMethod14()
{
DNode head = null;
head = DoublyLinkedListOps.AddTail(head, 1);
head = DoublyLinkedListOps.AddTail(head, 2);
head = DoublyLinkedListOps.DeleteFirstOf(head, 2);
ValidateList(head, new List <int> {
1
});
}