Don't derive from unittest.TestCase when not necessary

Author: akx

tests/database_test.py

@@ -1,6 +1,5 @@
 import ipaddress
 import re
-import unittest
 from unittest.mock import patch, MagicMock
 
 import pytest
@@ -15,7 +14,7 @@
     maxminddb.extension = None  # type: ignore
 
 
-class TestReader(unittest.TestCase):
+class TestReader:
     def test_language_list(self) -> None:
         reader = geoip2.database.Reader(
             "tests/data/test-data/GeoIP2-Country-Test.mmdb",

tests/models_test.py

@@ -2,12 +2,11 @@
 
 import pytest
 from typing import Dict
-import unittest
 
 import geoip2.models
 
 
-class TestModels(unittest.TestCase):
+class TestModels:
     def test_insights_full(self) -> None:
         raw = {
             "city": {
@@ -313,7 +312,7 @@ def test_unknown_keys(self) -> None:
         assert model.traits.ip_address == "1.2.3.4", "correct ip"
 
 
-class TestNames(unittest.TestCase):
+class TestNames:
     raw: Dict = {
         "continent": {
             "code": "NA",