ensure all viewsets have filter and search and add tests (#2946)

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

authentik/core/api/applications.py

@@ -89,6 +89,7 @@ class ApplicationViewSet(UsedByMixin, ModelViewSet):
         "group",
     ]
     lookup_field = "slug"
+    filterset_fields = ["name", "slug"]
     ordering = ["name"]
 
     def _filter_queryset_for_list(self, queryset: QuerySet) -> QuerySet:

authentik/core/api/sources.py

@@ -66,6 +66,7 @@ class SourceViewSet(
     queryset = Source.objects.none()
     serializer_class = SourceSerializer
     lookup_field = "slug"
+    search_fields = ["slug", "name"]
 
     def get_queryset(self):  # pragma: no cover
         return Source.objects.select_subclasses()