Inherit from faked classes in tests to satisfy mypy (#8859)

* tests: inherit FakeResolverMatcher from django.urls.ResolverMatcher in tests/test_versioning.py

* tests: inherit from rest_framework.versioning.BaseVersioning in tests/test_reverse.py

* fix: isort

---------

Co-authored-by: Piotr Szyma <pszyma@opera.com>

tests/test_reverse.py

@@ -3,6 +3,7 @@
 
 from rest_framework.reverse import reverse
 from rest_framework.test import APIRequestFactory
+from rest_framework.versioning import BaseVersioning
 
 factory = APIRequestFactory()
 
@@ -16,7 +17,7 @@ def null_view(request):
 ]
 
 
-class MockVersioningScheme:
+class MockVersioningScheme(BaseVersioning):
 
     def __init__(self, raise_error=False):
         self.raise_error = raise_error

tests/test_versioning.py

@@ -1,6 +1,6 @@
 import pytest
 from django.test import override_settings
-from django.urls import include, path, re_path
+from django.urls import ResolverMatch, include, path, re_path
 
 from rest_framework import serializers, status, versioning
 from rest_framework.decorators import APIView
@@ -126,7 +126,7 @@ def test_url_path_versioning(self):
         assert response.data == {'version': None}
 
     def test_namespace_versioning(self):
-        class FakeResolverMatch:
+        class FakeResolverMatch(ResolverMatch):
             namespace = 'v1'
 
         scheme = versioning.NamespaceVersioning
@@ -199,7 +199,7 @@ def test_reverse_url_path_versioning(self):
         assert response.data == {'url': 'http://testserver/another/'}
 
     def test_reverse_namespace_versioning(self):
-        class FakeResolverMatch:
+        class FakeResolverMatch(ResolverMatch):
             namespace = 'v1'
 
         scheme = versioning.NamespaceVersioning
@@ -250,7 +250,7 @@ def test_invalid_url_path_versioning(self):
         assert response.status_code == status.HTTP_404_NOT_FOUND
 
     def test_invalid_namespace_versioning(self):
-        class FakeResolverMatch:
+        class FakeResolverMatch(ResolverMatch):
             namespace = 'v3'
 
         scheme = versioning.NamespaceVersioning