policies: fix test API not working, add tests

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/policies/api/policies.py

@@ -1,6 +1,5 @@
 """policy API Views"""
 from django.core.cache import cache
-from django.http.response import HttpResponseBadRequest
 from django.urls import reverse
 from drf_yasg.utils import no_body, swagger_auto_schema
 from guardian.shortcuts import get_objects_for_user
@@ -127,8 +126,6 @@ class PolicyViewSet(
     @action(detail=False, methods=["POST"])
     def cache_clear(self, request: Request) -> Response:
         """Clear policy cache"""
-        if not request.user.is_superuser:
-            return HttpResponseBadRequest()
         keys = cache.keys("policy_*")
         cache.delete_many(keys)
         LOGGER.debug("Cleared Policy cache", keys=len(keys))
@@ -143,16 +140,17 @@ class PolicyViewSet(
         responses={200: PolicyTestResultSerializer()},
     )
     @action(detail=True, methods=["POST"])
-    def test(self, request: Request) -> Response:
+    # pylint: disable=unused-argument, invalid-name
+    def test(self, request: Request, pk: str) -> Response:
         """Test policy"""
         policy = self.get_object()
-        test_params = PolicyTestSerializer(request.data)
+        test_params = PolicyTestSerializer(data=request.data)
         if not test_params.is_valid():
             return Response(test_params.errors, status=400)
 
         # User permission check, only allow policy testing for users that are readable
         users = get_objects_for_user(request.user, "authentik_core.view_user").filter(
-            pk=test_params["user"]
+            pk=test_params.validated_data["user"].pk
         )
         if not users.exists():
             raise PermissionDenied()
@@ -165,4 +163,4 @@ class PolicyViewSet(
         proc = PolicyProcess(PolicyBinding(policy=policy), p_request, None)
         result = proc.execute()
         response = PolicyTestResultSerializer(result)
-        return Response(response)
+        return Response(response.data)

authentik/policies/tests/test_api.py

@@ -0,0 +1,28 @@
+"""Test policies API"""
+from django.urls import reverse
+from rest_framework.test import APITestCase
+
+from authentik.core.models import User
+from authentik.policies.dummy.models import DummyPolicy
+
+
+class TestPoliciesAPI(APITestCase):
+    """Test policies API"""
+
+    def setUp(self) -> None:
+        super().setUp()
+        self.policy = DummyPolicy.objects.create(name="dummy", result=True)
+        self.user = User.objects.get(username="akadmin")
+        self.client.force_login(self.user)
+
+    def test_test_call(self):
+        """Test Policy's test endpoint"""
+        response = self.client.post(
+            reverse("authentik_api:policy-test", kwargs={"pk": self.policy.pk}),
+            data={
+                "user": self.user.pk,
+            },
+        )
+        self.assertJSONEqual(
+            response.content.decode(), {"passing": True, "messages": ["dummy"]}
+        )