def test_is_not_bst(self): tree = BSTNode(3) tree.left_branch = BSTNode(2) tree.right_branch = BSTNode(1) self.assertFalse(is_BST(tree))
def test_is_bst(self): tree = BSTNode(2) tree.left_branch = BSTNode(1) tree.right_branch = BSTNode(3) self.assertTrue(is_BST(tree))