def test_valid_action(self):
        """
        Test the action method with a valid action.

        @raise AssertionError: If the test fails.
        """
        self.assertEquals("Temperature raised by 5 degrees", self.thermostat.action('raise_temp', 5))
        self.assertEquals("Temperature lowered by 5 degrees", self.thermostat.action('lower_temp', 5))

        Test the action method with a valid action.

        @raise AssertionError: If the test fails.
        
tests/behavioral_tests/test_command.py