test: Update tests to also test forgiving JWT Auth.

Run all the existing tests with both forgiving and original JWT Auth
behaviors.  Only one test needed to be modified.  Previously we were
raising an exception when CSRF checks failed within the authentication
process but with forgiving auth, we no longer rais an exception so we
update the one test to handle both cases for now.

This will get cleaned when we hopefully move forward with only having
the forgiving JWT auth flow in the future.

edx_rest_framework_extensions/auth/jwt/tests/test_authentication.py

@@ -11,11 +11,14 @@
 from edx_rest_framework_extensions.auth.jwt import authentication
 from edx_rest_framework_extensions.auth.jwt.authentication import JwtAuthentication
 from edx_rest_framework_extensions.auth.jwt.constants import USE_JWT_COOKIE_HEADER
+from edx_rest_framework_extensions.auth.jwt.cookies import jwt_cookie_name
 from edx_rest_framework_extensions.auth.jwt.decoder import jwt_decode_handler
 from edx_rest_framework_extensions.auth.jwt.tests.utils import (
     generate_jwt_token,
     generate_latest_version_payload,
 )
+from edx_rest_framework_extensions.config import ENABLE_FORGIVING_JWT_COOKIES
+from edx_rest_framework_extensions.settings import get_setting
 from edx_rest_framework_extensions.tests import factories
 
 
@@ -180,12 +183,20 @@ def test_authenticate_csrf_protected(self, mock_set_custom_attribute):
         request = RequestFactory().post('/')
 
         request.META[USE_JWT_COOKIE_HEADER] = 'true'
+        # Set a sample JWT cookie. We mock the auth response but we still want
+        # to ensure that there is jwt set because there is other logic that
+        # checks for the jwt to be set before moving forward with CSRF checks.
+        request.COOKIES[jwt_cookie_name()] = 'foo'
 
         with mock.patch.object(JSONWebTokenAuthentication, 'authenticate', return_value=('mock-user', "mock-auth")):
-            with self.assertRaises(PermissionDenied) as context_manager:
-                JwtAuthentication().authenticate(request)
+            if get_setting(ENABLE_FORGIVING_JWT_COOKIES):
+                assert JwtAuthentication().authenticate(request) is None
+            else:
+                with self.assertRaises(PermissionDenied) as context_manager:
+                    JwtAuthentication().authenticate(request)
+
+                assert context_manager.exception.detail.startswith('CSRF Failed')
 
-        assert context_manager.exception.detail.startswith('CSRF Failed')
         mock_set_custom_attribute.assert_called_with(
             'jwt_auth_failed',
             "Exception:PermissionDenied('CSRF Failed: CSRF cookie not set.')",
@@ -235,3 +246,8 @@ def _get_test_jwt_token(self):
         payload = generate_latest_version_payload(user)
         jwt_token = generate_jwt_token(payload)
         return jwt_token
+
+
+@override_settings(EDX_DRF_EXTENSIONS={ENABLE_FORGIVING_JWT_COOKIES: True})
+class ForgivingJwtAuthenticationTests(JwtAuthenticationTests):
+    pass