Reorganize tests.

tests/test_relations.py

 from .utils import mock_reverse, fail_reverse, BadType, MockObject, MockQueryset
-from django.conf.urls import patterns, url, include
-from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
+from django.core.exceptions import ImproperlyConfigured
 from django.utils.datastructures import MultiValueDict
 from rest_framework import serializers
 from rest_framework.fields import empty
-from rest_framework.test import APISimpleTestCase, APIRequestFactory
-from rest_framework.versioning import NamespaceVersioning
+from rest_framework.test import APISimpleTestCase
 import pytest
 
-factory = APIRequestFactory()
-
-dummy_view = lambda request, pk: None
-
-included_patterns = [
-    url(r'^example/(?P<pk>\d+)/$', dummy_view, name='example-detail')
-]
-
-urlpatterns = patterns(
-    '',
-    url(r'^v1/', include(included_patterns, namespace='v1')),
-    url(r'^example/(?P<pk>\d+)/$', dummy_view, name='example-detail')
-)
-
 
 class TestStringRelatedField(APISimpleTestCase):
     def setUp(self):
@@ -64,35 +48,6 @@ class TestPrimaryKeyRelatedField(APISimpleTestCase):
         assert representation == self.instance.pk
 
 
-class TestHyperlinkedRelatedField(APISimpleTestCase):
-    urls = 'tests.test_relations'
-
-    def setUp(self):
-        class HyperlinkedMockQueryset(MockQueryset):
-            def get(self, **lookup):
-                for item in self.items:
-                    if item.pk == int(lookup.get('pk', -1)):
-                        return item
-                raise ObjectDoesNotExist()
-
-        self.queryset = HyperlinkedMockQueryset([
-            MockObject(pk=1, name='foo'),
-            MockObject(pk=2, name='bar'),
-            MockObject(pk=3, name='baz')
-        ])
-        self.field = serializers.HyperlinkedRelatedField(
-            view_name='example-detail',
-            queryset=self.queryset
-        )
-        request = factory.post('/')
-        request.versioning_scheme = NamespaceVersioning()
-        self.field._context = {'request': request}
-
-    def test_bug_2489(self):
-        self.field.to_internal_value('/example/3/')
-        self.field.to_internal_value('/v1/example/3/')
-
-
 class TestHyperlinkedIdentityField(APISimpleTestCase):
     def setUp(self):
         self.instance = MockObject(pk=1, name='foo')

tests/test_versioning.py

+from .utils import MockObject, MockQueryset
 from django.conf.urls import include, url
+from django.core.exceptions import ObjectDoesNotExist
+from rest_framework import serializers
 from rest_framework import status, versioning
 from rest_framework.decorators import APIView
 from rest_framework.response import Response
 from rest_framework.reverse import reverse
-from rest_framework.test import APIRequestFactory, APITestCase
+from rest_framework.test import APIRequestFactory, APITestCase, APISimpleTestCase
+from rest_framework.versioning import NamespaceVersioning
 
 
 class RequestVersionView(APIView):
@@ -29,15 +33,18 @@ class RequestInvalidVersionView(APIView):
 factory = APIRequestFactory()
 
 mock_view = lambda request: None
+dummy_view = lambda request, pk: None
 
 included_patterns = [
     url(r'^namespaced/$', mock_view, name='another'),
+    url(r'^example/(?P<pk>\d+)/$', dummy_view, name='example-detail')
 ]
 
 urlpatterns = [
     url(r'^v1/', include(included_patterns, namespace='v1')),
     url(r'^another/$', mock_view, name='another'),
-    url(r'^(?P<version>[^/]+)/another/$', mock_view, name='another')
+    url(r'^(?P<version>[^/]+)/another/$', mock_view, name='another'),
+    url(r'^example/(?P<pk>\d+)/$', dummy_view, name='example-detail')
 ]
 
 
@@ -221,3 +228,33 @@ class TestInvalidVersion:
         request.resolver_match = FakeResolverMatch
         response = view(request, version='v3')
         assert response.status_code == status.HTTP_404_NOT_FOUND
+
+
+class TestHyperlinkedRelatedField(APISimpleTestCase):
+    urls = 'tests.test_versioning'
+
+    def setUp(self):
+
+        class HyperlinkedMockQueryset(MockQueryset):
+            def get(self, **lookup):
+                for item in self.items:
+                    if item.pk == int(lookup.get('pk', -1)):
+                        return item
+                raise ObjectDoesNotExist()
+
+        self.queryset = HyperlinkedMockQueryset([
+            MockObject(pk=1, name='foo'),
+            MockObject(pk=2, name='bar'),
+            MockObject(pk=3, name='baz')
+        ])
+        self.field = serializers.HyperlinkedRelatedField(
+            view_name='example-detail',
+            queryset=self.queryset
+        )
+        request = factory.post('/', urlconf='tests.test_versioning')
+        request.versioning_scheme = NamespaceVersioning()
+        self.field._context = {'request': request}
+
+    def test_bug_2489(self):
+        self.field.to_internal_value('/example/3/')
+        self.field.to_internal_value('/v1/example/3/')

tests/urls.py

 """
 Blank URLConf just to keep the test suite happy
 """
-from tests import test_relations
+from django.conf.urls import patterns
 
-urlpatterns = test_relations.urlpatterns
+urlpatterns = patterns('')