def METHOD_NAME(self):
    self.assertFalse(self.__test_instance.is_forecast())
    in_a_year = datetime_to_UNIXtime(datetime.utcnow()) + 31536000
    uvindex = SO2Index(in_a_year,
                       self.__test_location, self.__test_interval,
                       [], self.__test_reception_time)
    self.assertTrue(uvindex.is_forecast())