public void Test() { SequenceList <int> list = new SequenceList <int>(5); // 1, 2, 3, 4 list.Add(1); list.Add(2); list.Add(3); list.Add(4); Assert.Equal(4, list.Length); Assert.Equal(2, list[1]); // 1, 2, 3, 4 // 1, 2, 3, 5 list[3] = 5; Assert.Equal(4, list.Length); Assert.Equal(5, list[3]); // 1, 2, 3, 5 // 1, 8, 2, 3, 5 list.Insert(1, 8); Assert.Equal(5, list.Length); Assert.Equal(8, list[1]); Assert.Equal(2, list[2]); // 1, 8, 2, 3, 5 // 1, 2, 3, 5 int removedItem = list.RemoveAt(1); Assert.Equal(4, list.Length); Assert.Equal(8, removedItem); Assert.Equal(2, list[1]); list.Clear(); Assert.Equal(0, list.Length); }