Cleanup router tests urlpatterns

tests/test_routers.py

@@ -14,7 +14,7 @@ from rest_framework.compat import get_regex_pattern
 from rest_framework.decorators import detail_route, list_route
 from rest_framework.response import Response
 from rest_framework.routers import DefaultRouter, SimpleRouter
-from rest_framework.test import APIRequestFactory
+from rest_framework.test import APIRequestFactory, URLPatternsTestCase
 from rest_framework.utils import json
 
 factory = APIRequestFactory()
@@ -90,23 +90,10 @@ namespaced_router.register(r'example', MockViewSet, base_name='example')
 
 empty_prefix_router = SimpleRouter()
 empty_prefix_router.register(r'', EmptyPrefixViewSet, base_name='empty_prefix')
-empty_prefix_urls = [
-    url(r'^', include(empty_prefix_router.urls)),
-]
 
 regex_url_path_router = SimpleRouter()
 regex_url_path_router.register(r'', RegexUrlPathViewSet, base_name='regex')
 
-urlpatterns = [
-    url(r'^non-namespaced/', include(namespaced_router.urls)),
-    url(r'^namespaced/', include((namespaced_router.urls, 'example'), namespace='example')),
-    url(r'^example/', include(notes_router.urls)),
-    url(r'^example2/', include(kwarged_notes_router.urls)),
-
-    url(r'^empty-prefix/', include(empty_prefix_urls)),
-    url(r'^regex/', include(regex_url_path_router.urls))
-]
-
 
 class BasicViewSet(viewsets.ViewSet):
     def list(self, request, *args, **kwargs):
@@ -156,8 +143,12 @@ class TestSimpleRouter(TestCase):
                 assert route.mapping[method] == endpoint
 
 
-@override_settings(ROOT_URLCONF='tests.test_routers')
-class TestRootView(TestCase):
+class TestRootView(URLPatternsTestCase, TestCase):
+    urlpatterns = [
+        url(r'^non-namespaced/', include(namespaced_router.urls)),
+        url(r'^namespaced/', include((namespaced_router.urls, 'namespaced'), namespace='namespaced')),
+    ]
+
     def test_retrieve_namespaced_root(self):
         response = self.client.get('/namespaced/')
         assert response.data == {"example": "http://testserver/namespaced/example/"}
@@ -167,11 +158,15 @@ class TestRootView(TestCase):
         assert response.data == {"example": "http://testserver/non-namespaced/example/"}
 
 
-@override_settings(ROOT_URLCONF='tests.test_routers')
-class TestCustomLookupFields(TestCase):
+class TestCustomLookupFields(URLPatternsTestCase, TestCase):
     """
     Ensure that custom lookup fields are correctly routed.
     """
+    urlpatterns = [
+        url(r'^example/', include(notes_router.urls)),
+        url(r'^example2/', include(kwarged_notes_router.urls)),
+    ]
+
     def setUp(self):
         RouterTestModel.objects.create(uuid='123', text='foo bar')
         RouterTestModel.objects.create(uuid='a b', text='baz qux')
@@ -219,12 +214,17 @@ class TestLookupValueRegex(TestCase):
 
 
 @override_settings(ROOT_URLCONF='tests.test_routers')
-class TestLookupUrlKwargs(TestCase):
+class TestLookupUrlKwargs(URLPatternsTestCase, TestCase):
     """
     Ensure the router honors lookup_url_kwarg.
 
     Setup a deep lookup_field, but map it to a simple URL kwarg.
     """
+    urlpatterns = [
+        url(r'^example/', include(notes_router.urls)),
+        url(r'^example2/', include(kwarged_notes_router.urls)),
+    ]
+
     def setUp(self):
         RouterTestModel.objects.create(uuid='123', text='foo bar')
 
@@ -408,8 +408,11 @@ class TestDynamicListAndDetailRouter(TestCase):
         self._test_list_and_detail_route_decorators(SubDynamicListAndDetailViewSet)
 
 
-@override_settings(ROOT_URLCONF='tests.test_routers')
-class TestEmptyPrefix(TestCase):
+class TestEmptyPrefix(URLPatternsTestCase, TestCase):
+    urlpatterns = [
+        url(r'^empty-prefix/', include(empty_prefix_router.urls)),
+    ]
+
     def test_empty_prefix_list(self):
         response = self.client.get('/empty-prefix/')
         assert response.status_code == 200
@@ -422,8 +425,11 @@ class TestEmptyPrefix(TestCase):
         assert json.loads(response.content.decode('utf-8')) == {'uuid': '111', 'text': 'First'}
 
 
-@override_settings(ROOT_URLCONF='tests.test_routers')
-class TestRegexUrlPath(TestCase):
+class TestRegexUrlPath(URLPatternsTestCase, TestCase):
+    urlpatterns = [
+        url(r'^regex/', include(regex_url_path_router.urls)),
+    ]
+
     def test_regex_url_path_list(self):
         kwarg = '1234'
         response = self.client.get('/regex/list/{}/'.format(kwarg))
@@ -438,8 +444,11 @@ class TestRegexUrlPath(TestCase):
         assert json.loads(response.content.decode('utf-8')) == {'pk': pk, 'kwarg': kwarg}
 
 
-@override_settings(ROOT_URLCONF='tests.test_routers')
-class TestViewInitkwargs(TestCase):
+class TestViewInitkwargs(URLPatternsTestCase, TestCase):
+    urlpatterns = [
+        url(r'^example/', include(notes_router.urls)),
+    ]
+
     def test_suffix(self):
         match = resolve('/example/notes/')
         initkwargs = match.func.initkwargs