public void HasPathSumTest()
{
var root = new TreeNode(5);
root.left = new TreeNode(4);
root.left.left = new TreeNode(11);
root.left.left.left = new TreeNode(7);
root.left.left.right = new TreeNode(2);
root.right = new TreeNode(8);
root.right.left = new TreeNode(13);
root.right.right = new TreeNode(4);
root.right.right.right = new TreeNode(1);
var expected = true;
var actual = _target.HasPathSum(root, 22);
Assert.Equal(expected, actual);
}
