public void TestDuplicateRemoval() { var ll = new LinkedList <int>(); ll.Push(1).Push(1).Push(2).Push(2).Push(3).Push(3).Push(4).Push(4); var uniqueLl = RemoveDuplicates <int> .Go(ll); Assert.Equal("1 -> 2 -> 3 -> 4 -> <null>", uniqueLl.ToString()); }