def main():
    tree = BinarySearchTree()
    tree.create(7)
    tree.create(3)
    tree.create(10)
    tree.create(2)
    tree.create(8)
    tree.create(9)
    tree.create(6)
    tree.create(5)
    print("root node:", tree.root.info)
    print("left child node:", tree.root.left)
    print("right child node:", tree.root.right)

    print(maxDepth(tree.root))
 def test1(self):
     tree = BinarySearchTree()
     tree.create(5)
     self.assertEqual(tree.root.info, 5, msg="Values not equal")