def test_add_subuser(self):

        self.api.action('add_subuser', {
             'username': 'test.user.1',
             'password': 'test.user.1'
        })

        response = self.api.execute()

        self.assertIsInstance(response, ApiResponse)
        self.assertEqual(response.username, self.api_username % '%s_test.user.1')
dataset/ETHPy150Open smsapi/smsapi-python-client/tests/client.py/ServiceClientTestCase.test_add_subuser/swapped operands of `%`