added testcases for Permission denied exceptions

tests/test_views.py

@@ -11,6 +11,8 @@ from rest_framework.response import Response
 from rest_framework.settings import api_settings
 from rest_framework.test import APIRequestFactory
 from rest_framework.views import APIView
+from rest_framework.exceptions import PermissionDenied
+from django.core.exceptions import PermissionDenied as DjangoPermissionDenied
 
 factory = APIRequestFactory()
 
@@ -50,6 +52,25 @@ def error_view(request):
     raise Exception
 
 
+@api_view(['GET'])
+def permissiondenied_instance_view(request):
+    return PermissionDenied()
+    raise PermissionDenied()
+
+@api_view(['GET'])
+def permissiondenied_class_view(request):
+    raise PermissionDenied
+
+@api_view(['GET'])
+def django_permissiondenied_instance_view(request):
+    raise DjangoPermissionDenied()
+
+@api_view(['GET'])
+def django_permissiondenied_class_view(request):
+    raise DjangoPermissionDenied
+
+
+
 def sanitise_json_error(error_dict):
     """
     Exact contents of JSON error messages depend on the installed version
@@ -89,6 +110,59 @@ class FunctionBasedViewIntegrationTests(TestCase):
         self.assertEqual(sanitise_json_error(response.data), expected)
 
 
+class FuncionBasedPermissionDeniedTests(TestCase):
+
+
+    def setUp(self):
+        self.authentication_classes = api_settings.DEFAULT_AUTHENTICATION_CLASSES
+        api_settings.DEFAULT_AUTHENTICATION_CLASSES = 'rest_framework.permissions.IsAuthenticated'
+
+    def tearDown(self):
+         api_settings.DEFAULT_AUTHENTICATION_CLASSES = self.authentication_classes
+
+    def test_permission_denied_instance_error(self):
+        self.view = permissiondenied_instance_view
+        request = factory.get('/', content_type='application/json')
+        response = self.view(request)
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+        expected = {
+            'detail': 'You do not have permission to perform this action.'
+        }
+        self.assertEqual(sanitise_json_error(response.data), expected)
+
+    def test_permission_denied_class_error(self):
+        self.view = permissiondenied_class_view
+
+        request = factory.get('/', content_type='application/json')
+        response = self.view(request)
+        expected = {
+            'detail': 'You do not have permission to perform this action.'
+        }
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+        self.assertEqual(sanitise_json_error(response.data), expected)
+
+    def test_django_permission_denied_instance_error(self):
+        self.view = django_permissiondenied_instance_view
+        request = factory.get('/', content_type='application/json')
+        response = self.view(request)
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+        expected = {
+            'detail': u'Permission denied.'
+        }
+        self.assertEqual(sanitise_json_error(response.data), expected)
+
+    def test_django_permission_denied_class_error(self):
+        self.view = django_permissiondenied_class_view
+        request = factory.get('/', content_type='application/json')
+        response = self.view(request)
+        expected = {
+            'detail': u'Permission denied.'
+        }
+        self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
+        self.assertEqual(sanitise_json_error(response.data), expected)
+
+
+
 class TestCustomExceptionHandler(TestCase):
     def setUp(self):
         self.DEFAULT_HANDLER = api_settings.EXCEPTION_HANDLER