def METHOD_NAME(self):
    test_params = {
        "uprns": ["1", "3", "4", "5", "6", "7"],
        "addressbase": [
            {"address": "Haringey Park, London", "uprn": "1", "postcode": "N8 9JG"},
            # uprn '2' in addresses.csv but wasn't in addressbase so not in uprntocouncil either
            {
                "address": "36 Abbots Park, London",
                "uprn": "3",
                "postcode": "SW2 3QD",
            },
            {"address": "3 Factory Rd, Poole", "uprn": "4", "postcode": "BH16 5HT"},
            {
                "address": "5-6 Mickleton Dr, Southport",
                "uprn": "5",
                "postcode": "PR8 2QX",
            },
            {
                "address": "80 Pine Vale Cres, Bournemouth",
                "uprn": "6",
                "postcode": "BH10 6BJ",
            },
            {
                "address": "4 Factory Rd, Poole",
                "uprn": "7",
                "postcode": "BH16 5HT",  # postcode is 'BH17 5HT' in csv
            },
        ],
        "addresses_name": "addresses.csv",
    }
    self.set_up(**test_params)
    imported_uprns = (
        UprnToCouncil.objects.filter(lad="X01000000")
        .exclude(polling_station_id="")
        .order_by("uprn")
        .values_list("uprn", "polling_station_id")
    )
    self.assertEqual(3, len(imported_uprns))
    expected = {("3", "3"), ("4", "1"), ("6", "2")}
    self.assertEqual(set(imported_uprns), expected)