def METHOD_NAME(self, geoip_db):
    loc = Location(100000.0)
    valid_regions = GEOCODER.valid_regions
    mapped_regions = set(
        [geoip.GEOIP_GENC_MAP.get(r, r) for r in geoip.REGION_SCORE.keys()]
    )
    assert mapped_regions - valid_regions == set()
    for region in mapped_regions:
        radius, region_radius = geoip_db.radius(region, loc, default=None)
        assert radius is not None
        assert region_radius is not None