def test_data_is_retained(self): expected = TreeNode("4", None, None) bst = BinarySearchTree(["4"]) self.assertTreeEqual(bst.data(), expected)
def test_smaller_number_at_left_node(self): expected = TreeNode("4", TreeNode("3", None, None), None) bst = BinarySearchTree(["4", "3"]) self.assertTreeEqual(bst.data(), expected)