Add tests for OAuth2 authentication

rest_framework/tests/authentication.py

 from __future__ import unicode_literals
+from django.core.urlresolvers import reverse
 from django.contrib.auth.models import User
 from django.http import HttpResponse
 from django.test import Client, TestCase
@@ -6,11 +7,15 @@ from rest_framework import HTTP_HEADER_ENCODING
 from rest_framework import permissions
 from rest_framework import status
 from rest_framework.authtoken.models import Token
-from rest_framework.authentication import TokenAuthentication, BasicAuthentication, SessionAuthentication
-from rest_framework.compat import patterns
+from rest_framework.authentication import TokenAuthentication, BasicAuthentication, SessionAuthentication, OAuth2Authentication
+from rest_framework.compat import patterns, url, include
+from rest_framework.compat import oauth2
+from rest_framework.compat import oauth2_provider
 from rest_framework.views import APIView
 import json
 import base64
+import datetime
+import unittest
 
 
 class MockView(APIView):
@@ -22,11 +27,16 @@ class MockView(APIView):
     def put(self, request):
         return HttpResponse({'a': 1, 'b': 2, 'c': 3})
 
+    def get(self, request):
+        return HttpResponse({'a': 1, 'b': 2, 'c': 3})
+
 urlpatterns = patterns('',
     (r'^session/$', MockView.as_view(authentication_classes=[SessionAuthentication])),
     (r'^basic/$', MockView.as_view(authentication_classes=[BasicAuthentication])),
     (r'^token/$', MockView.as_view(authentication_classes=[TokenAuthentication])),
     (r'^auth-token/$', 'rest_framework.authtoken.views.obtain_auth_token'),
+    url(r'^oauth2/', include('provider.oauth2.urls', namespace = 'oauth2')),
+    url(r'^oauth2-test/$', MockView.as_view(authentication_classes=[OAuth2Authentication])),
 )
 
 
@@ -187,3 +197,99 @@ class TokenAuthTests(TestCase):
                                {'username': self.username, 'password': self.password})
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(json.loads(response.content.decode('ascii'))['token'], self.key)
+
+
+class OAuth2Tests(TestCase):
+    """OAuth 2.0 authentication"""
+    urls = 'rest_framework.tests.authentication'
+
+    def setUp(self):
+        self.csrf_client = Client(enforce_csrf_checks=True)
+        self.username = 'john'
+        self.email = 'lennon@thebeatles.com'
+        self.password = 'password'
+        self.user = User.objects.create_user(self.username, self.email, self.password)
+
+        self.CLIENT_ID = 'client_key'
+        self.CLIENT_SECRET = 'client_secret'
+        self.ACCESS_TOKEN = "access_token"
+        self.REFRESH_TOKEN = "refresh_token"
+
+        self.oauth2_client = oauth2.models.Client.objects.create(
+                client_id=self.CLIENT_ID, 
+                client_secret=self.CLIENT_SECRET,
+                redirect_uri='',
+                client_type=0,
+                name='example', 
+                user=None,
+            )
+
+        self.access_token = oauth2.models.AccessToken.objects.create(
+                token=self.ACCESS_TOKEN,
+                client=self.oauth2_client,
+                user=self.user,
+            )
+        self.refresh_token = oauth2.models.RefreshToken.objects.create(
+                user=self.user,
+                access_token=self.access_token,
+                client=self.oauth2_client
+            )
+
+    def _create_authorization_header(self, token=None):
+        return "Bearer {0}".format(token or self.access_token.token)
+
+    def _client_credentials_params(self):
+        return {'client_id': self.CLIENT_ID, 'client_secret': self.CLIENT_SECRET}
+
+    @unittest.skipUnless(oauth2, 'django-oauth2-provider not installed')
+    def test_get_form_with_wrong_client_data_failing_auth(self):
+        """Ensure GETing form over OAuth with incorrect client credentials fails"""
+        auth = self._create_authorization_header()
+        params = self._client_credentials_params()
+        params['client_id'] += 'a'
+        response = self.csrf_client.get('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        self.assertEqual(response.status_code, 401)
+
+    @unittest.skipUnless(oauth2, 'django-oauth2-provider not installed')
+    def test_get_form_passing_auth(self):
+        """Ensure GETing form over OAuth with correct client credentials succeed"""
+        auth = self._create_authorization_header()
+        params = self._client_credentials_params()
+        response = self.csrf_client.get('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        self.assertEqual(response.status_code, 200)
+
+    @unittest.skipUnless(oauth2, 'django-oauth2-provider not installed')
+    def test_post_form_passing_auth(self):
+        """Ensure POSTing form over OAuth with correct credentials passes and does not require CSRF"""
+        auth = self._create_authorization_header()
+        params = self._client_credentials_params()
+        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        self.assertEqual(response.status_code, 200)
+
+    @unittest.skipUnless(oauth2, 'django-oauth2-provider not installed')
+    def test_post_form_token_removed_failing_auth(self):
+        """Ensure POSTing when there is no OAuth access token in db fails"""
+        self.access_token.delete()
+        auth = self._create_authorization_header()
+        params = self._client_credentials_params()
+        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        self.assertIn(response.status_code, (status.HTTP_401_UNAUTHORIZED, status.HTTP_403_FORBIDDEN))
+
+    @unittest.skipUnless(oauth2, 'django-oauth2-provider not installed')
+    def test_post_form_with_refresh_token_failing_auth(self):
+        """Ensure POSTing with refresh token instead of access token fails"""
+        auth = self._create_authorization_header(token=self.refresh_token.token)
+        params = self._client_credentials_params()
+        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        self.assertIn(response.status_code, (status.HTTP_401_UNAUTHORIZED, status.HTTP_403_FORBIDDEN))
+
+    @unittest.skipUnless(oauth2, 'django-oauth2-provider not installed')
+    def test_post_form_with_expired_access_token_failing_auth(self):
+        """Ensure POSTing with expired access token fails with an 'Invalid token' error"""
+        self.access_token.expires = datetime.datetime.now() - datetime.timedelta(seconds=10)  # 10 seconds late
+        self.access_token.save()
+        auth = self._create_authorization_header()
+        params = self._client_credentials_params()
+        response = self.csrf_client.post('/oauth2-test/', params, HTTP_AUTHORIZATION=auth)
+        self.assertIn(response.status_code, (status.HTTP_401_UNAUTHORIZED, status.HTTP_403_FORBIDDEN))
+        self.assertIn('Invalid token', response.content)