feat(devops): public feature flag endpoint pagination limited to 20 results

ref: #673 closes #663

.vscode/settings.json

@@ -20,5 +20,4 @@
     "cSpell.language": "en-AU",
     "jest.enable": false,
     "pylint.enabled": true,
-    "pylint.importStrategy": "fromEnvironment",
 }

app/api/viewsets/common.py

@@ -1,7 +1,7 @@
 import importlib
 from django.utils.safestring import mark_safe
 
-from rest_framework import viewsets
+from rest_framework import viewsets, pagination
 from rest_framework_json_api.metadata import JSONAPIMetadata
 from rest_framework.exceptions import APIException
 from rest_framework.permissions import IsAuthenticated, IsAuthenticatedOrReadOnly
@@ -802,6 +802,20 @@ class IndexViewset(
     ]
 
 
+class StaticPageNumbering(
+    pagination.PageNumberPagination
+):
+    """Enforce Page Numbering
+
+    Enfore results per page min/max to static value that cant be changed.
+    """
+
+    page_size = 20
+
+    max_page_size = 20
+
+
+
 class PublicReadOnlyViewSet(
     ReadOnlyListModelViewSet
 ):
@@ -817,6 +831,8 @@ class PublicReadOnlyViewSet(
         ReadOnlyModelViewSet (ViewSet): Common Read-Only Viewset
     """
 
+    pagination_class = StaticPageNumbering
+
     permission_classes = [
         IsAuthenticatedOrReadOnly,
     ]

app/devops/tests/unit/public_feature_flag/test_unit_public_feature_flag_viewset.py

@@ -8,7 +8,8 @@ from rest_framework.reverse import reverse
 from access.models.organization import Organization
 
 from api.tests.abstract.viewsets import ViewSetModel
-from api.viewsets.common import PublicReadOnlyViewSet
+from api.viewsets.common import PublicReadOnlyViewSet, StaticPageNumbering
+
 
 from devops.models.software_enable_feature_flag import SoftwareEnableFeatureFlag
 from devops.viewsets.public_feature_flag import ViewSet
@@ -115,3 +116,14 @@ class ViewsetList(
         view_set = self.viewset()
     
         assert view_set.metadata_class is JSONAPIMetadata
+
+
+    def test_view_attr_pagination_class_value(self):
+        """Attribute Test
+    
+        Attribute `pagination_class` must be metadata class `StaticPageNumbering`
+        """
+    
+        view_set = self.viewset()
+    
+        assert view_set.pagination_class is StaticPageNumbering