use pofk_algorithm::tree_algorithms::binary_tree_traversal::*;
use pofk_algorithm::tree_algorithms::zigzag_traversal::zigzag_traversal;
fn make_test_tree() -> Option<Box<TreeNode<i32>>> {
let mut root = Box::new(TreeNode::new(1));
let mut left = Box::new(TreeNode::new(2));
left.left = Some(Box::new(TreeNode::new(4)));
left.right = Some(Box::new(TreeNode::new(5)));
root.left = Some(left);
root.right = Some(Box::new(TreeNode::new(3)));
Some(root)
}
#[test]
fn test_zigzag_traversal() {
let tree = make_test_tree();
let levels = zigzag_traversal(&tree);
assert_eq!(levels, vec![vec![1], vec![3, 2], vec![4, 5]]);
}