public void ListAfterInsertingAndRemovingNode_ShouldBeEmpty()
{
var list = new DblLinkedList <int>();
var node = DblLinkedList.CreateNode(1);
list.InsertTail(node);
list.Remove(node);
list.IsEmpty().Should().BeTrue();
}
public void AfterRemovingHeadNode_HeadShouldBeChanged()
{
var list = new DblLinkedList <int>();
var node1 = DblLinkedList.CreateNode(1);
var node2 = DblLinkedList.CreateNode(2);
list.InsertHead(node1);
list.InsertHead(node2);
list.Remove(node2);
list.Head.Value.Should().Be(node1.Value);
}