def METHOD_NAME(self):
    # season membership identifies correct seasons?
    season = "djf"
    ccat.add_season_membership(self.cube, "time", season, name="in_season")
    ccat.add_season(self.cube, "time")
    coord_season = self.cube.coord("season")
    coord_membership = self.cube.coord("in_season")
    season_locations = np.where(coord_season.points == season)[0]
    membership_locations = np.where(coord_membership.points)[0]
    self.assertArrayEqual(membership_locations, season_locations)