def test_simple_no(self): self.assertTrue(validate_is_search_tree( TreeNode( 5, left=TreeNode(8) ) ))
def test_bigger_yes(self): self.assertTrue(validate_is_search_tree( TreeNode( 3, left=TreeNode(2, left=TreeNode(1)), right=TreeNode(5, left=TreeNode(4), right=TreeNode(6)) ) ))
def test_simple_yes(self): self.assertTrue(validate_is_search_tree( TreeNode(5) ))