chore: added integration test cases for GetChildObjects func

Author: Ash-exp

kubelink/pkg/service/commonHelmService/k8sService.go

@@ -51,7 +51,20 @@ type ClusterConfig struct {
 type K8sService interface {
 	CanHaveChild(gvk schema.GroupVersionKind) bool
 	GetLiveManifest(restConfig *rest.Config, namespace string, gvk *schema.GroupVersionKind, name string) (*unstructured.Unstructured, *schema.GroupVersionResource, error)
+
+	// GetChildObjectsV1 is the old implementation for getting children resource manifests for a parent GVK.
+	// It doesn't support paginated listing,
+	// which can cause high memory consumption if the child GVK are present in a large number.
+	// But as it fetches all the data in a single call, it saves up multiple round trips cost.
+	// This is the deprecated way to get child resources.
+	// Use GetChildObjectsV2 instead.
 	GetChildObjectsV1(restConfig *rest.Config, namespace string, parentGvk schema.GroupVersionKind, parentName string, parentApiVersion string) ([]*unstructured.Unstructured, error)
+
+	// GetChildObjectsV2 is the new implementation for getting children resource manifests for a parent GVK.
+	// It supports paginated listing,
+	// which will optimize memory consumption if the child GVK are present in a large number.
+	// But as it fetches all the data in multiple calls, it will cost multiple round trips.
+	// This is the recommended way to get child resources.
 	GetChildObjectsV2(restConfig *rest.Config, namespace string, parentGvk schema.GroupVersionKind, parentName string) ([]*unstructured.Unstructured, error)
 	PatchResource(ctx context.Context, restConfig *rest.Config, r *bean.KubernetesResourcePatchRequest) error
 }