public void LLCanAddBefore(object value)
{
Node node1 = new Node(10);
Node node2 = new Node(null);
Node node3 = new Node("Dune");
Node node4 = new Node(value);
LL LL = new LL(node1);
LL.Append(node2);
LL.Append(node3);
LL.AddBefore(node4, node3);
Assert.Equal(node3, node4.Next);
}
