public void InorderTraversal_PrintsList()
        {
            BinaryNode<int> root = new BinaryNode<int>(4);
            BinaryNode<int> node1 = new BinaryNode<int>(1);
            BinaryNode<int> node2 = new BinaryNode<int>(2);
            BinaryNode<int> node3 = new BinaryNode<int>(3);
            BinaryNode<int> node5 = new BinaryNode<int>(5);
            BinaryNode<int> node6 = new BinaryNode<int>(6);
            BinaryNode<int> node7 = new BinaryNode<int>(7);
            BinaryNode<int> node8 = new BinaryNode<int>(8);
            root.LeftChild = node2;
            root.RightChild = node5;
            node2.LeftChild = node1;
            node2.RightChild = node3;
            node5.RightChild = node7;
            node7.LeftChild = node6;
            node7.RightChild = node8;

            root.TraverseInorderRecursively();
            List<int> expected = new List<int>() { 1, 2, 3, 4, 5, 6, 7, 8 };
            List<int> dummy = new List<int>() { 1, 2, 3, 4, 5, 6, 7, 8 };

            Assert.AreEqual(expected, dummy);
        }