def test_fixAltitude(self):
        """
        The NMEA representation of an altitude (above mean sea level)
        is correctly converted.
        """
        key, value = 'altitude', '545.4'
        altitude = base.Altitude(float(value))
        self._fixerTest({key: value}, {key: altitude})

        The NMEA representation of an altitude (above mean sea level)
        is correctly converted.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/positioning/test/test_nmea.py