def METHOD_NAME(self):
    tags = ["replaygain_reference_loudness", "replaygain_algorithm",
            "replaygain_album_range", "replaygain_track_range"]
    for tag in tags:
        self.song[tag] = u"foo"
    rgs = self.mod.RGSong(self.song)
    rgs.done = True
    rgs._write(0.0, 0.0)
    for tag in tags:
        self.assertFalse(self.song(tag))