K8s/Folders: Fix tests for creating folders (#94192)

* Add feature toggle grafanaAPIServerTestingWithExperimentalAPIs
* Customise registration of FolderAPIBuilder for tests and fix tests

pkg/services/featuremgmt/registry.go

@@ -750,6 +750,12 @@ var (
 			Stage:       FeatureStageExperimental,
 			Owner:       grafanaSearchAndStorageSquad,
 		},
+		{
+			Name:        "grafanaAPIServerTestingWithExperimentalAPIs",
+			Description: "Facilitate integration testing of experimental APIs",
+			Stage:       FeatureStageExperimental,
+			Owner:       grafanaSearchAndStorageSquad,
+		},
 		{
 			Name:            "datasourceQueryTypes",
 			Description:     "Show query type endpoints in datasource API servers (currently hardcoded for testdata, expressions, and prometheus)",

pkg/services/featuremgmt/toggles_gen.csv

@@ -98,6 +98,7 @@ kubernetesPlaylists,GA,@grafana/grafana-app-platform-squad,false,true,false
 kubernetesSnapshots,experimental,@grafana/grafana-app-platform-squad,false,true,false
 kubernetesDashboards,experimental,@grafana/grafana-app-platform-squad,false,false,true
 kubernetesFolders,experimental,@grafana/search-and-storage,false,false,false
+grafanaAPIServerTestingWithExperimentalAPIs,experimental,@grafana/search-and-storage,false,false,false
 datasourceQueryTypes,experimental,@grafana/grafana-app-platform-squad,false,true,false
 queryService,experimental,@grafana/grafana-app-platform-squad,false,true,false
 queryServiceRewrite,experimental,@grafana/grafana-app-platform-squad,false,true,false

pkg/services/featuremgmt/toggles_gen.go

@@ -403,6 +403,10 @@ const (
 	// Use the kubernetes API in the frontend for folders, and route /api/folders requests to k8s
 	FlagKubernetesFolders = "kubernetesFolders"
 
+	// FlagGrafanaAPIServerTestingWithExperimentalAPIs
+	// Facilitate integration testing of experimental APIs
+	FlagGrafanaAPIServerTestingWithExperimentalAPIs = "grafanaAPIServerTestingWithExperimentalAPIs"
+
 	// FlagDatasourceQueryTypes
 	// Show query type endpoints in datasource API servers (currently hardcoded for testdata, expressions, and prometheus)
 	FlagDatasourceQueryTypes = "datasourceQueryTypes"

pkg/services/featuremgmt/toggles_gen.json

@@ -1384,6 +1384,18 @@
         "requiresRestart": true
       }
     },
+    {
+      "metadata": {
+        "name": "grafanaAPIServerTestingWithExperimentalAPIs",
+        "resourceVersion": "1727945615419",
+        "creationTimestamp": "2024-10-03T08:53:35Z"
+      },
+      "spec": {
+        "description": "Facilitate integration testing of experimental APIs",
+        "stage": "experimental",
+        "codeowner": "@grafana/search-and-storage"
+      }
+    },
     {
       "metadata": {
         "name": "grafanaAPIServerWithExperimentalAPIs",