def test_execute_commit_false(self):
        with TRN:
            sql = """INSERT INTO ag.test_table (str_column, int_column)
                     VALUES (%s, %s) RETURNING str_column, int_column"""
            args = [['insert1', 1], ['insert2', 2], ['insert3', 3]]
            TRN.add(sql, args, many=True)

            obs = TRN.execute()
            exp = [[['insert1', 1]], [['insert2', 2]], [['insert3', 3]]]
            self.assertEqual(obs, exp)

            self._assert_sql_equal([])

            TRN.commit()

            self._assert_sql_equal([('insert1', True, 1), ('insert2', True, 2),
                                    ('insert3', True, 3)])
    def test_execute_commit_false(self):
        with TRN:
            sql = """INSERT INTO ag.test_table (str_column, int_column)
                     VALUES (%s, %s) RETURNING str_column, int_column"""
            args = [['insert1', 1], ['insert2', 2], ['insert3', 3]]
            TRN.add(sql, args, many=True)

            obs = TRN.execute()
            exp = [[['insert1', 1]], [['insert2', 2]], [['insert3', 3]]]
            self.assertEqual(obs, exp)

            self._assert_sql_equal([])

            TRN.commit()

            self._assert_sql_equal([('insert1', True, 1), ('insert2', True, 2),
                                    ('insert3', True, 3)])
    def test_context_manager_checker(self):
        with self.assertRaises(RuntimeError):
            TRN.add("SELECT 42")

        with self.assertRaises(RuntimeError):
            TRN.execute()

        with self.assertRaises(RuntimeError):
            TRN.commit()

        with self.assertRaises(RuntimeError):
            TRN.rollback()

        with TRN:
            TRN.add("SELECT 42")

        with self.assertRaises(RuntimeError):
            TRN.execute()
    def test_context_manager_checker(self):
        with self.assertRaises(RuntimeError):
            TRN.add("SELECT 42")

        with self.assertRaises(RuntimeError):
            TRN.execute()

        with self.assertRaises(RuntimeError):
            TRN.commit()

        with self.assertRaises(RuntimeError):
            TRN.rollback()

        with TRN:
            TRN.add("SELECT 42")

        with self.assertRaises(RuntimeError):
            TRN.execute()