test: add field indexer for spec.nodeName

Fixes CI failure by registering field indexer in fake client to support
field selector queries on spec.nodeName.

Author: Nakshatra Sharma

pkg/controllers/gameserver/topology_rater_test.go

@@ -7,14 +7,20 @@ import (
 	gameKruiseV1alpha1 "github.com/openkruise/kruise-game/apis/v1alpha1"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/client/fake"
 )
 
 // TestTopologyRater_Basic covers the main happy-path calculation using defaults.
 func TestTopologyRater_Basic(t *testing.T) {
 	ctx := context.TODO()
 
+	scheme := runtime.NewScheme()
+	_ = corev1.AddToScheme(scheme)
+	_ = gameKruiseV1alpha1.AddToScheme(scheme)
+
 	pod := &corev1.Pod{
 		ObjectMeta: metav1.ObjectMeta{
 			Namespace: "default",
@@ -28,7 +34,14 @@ func TestTopologyRater_Basic(t *testing.T) {
 		},
 	}
 
-	cl := fake.NewClientBuilder().WithScheme(scheme).WithObjects(pod).Build()
+	cl := fake.NewClientBuilder().
+		WithScheme(scheme).
+		WithObjects(pod).
+		WithIndex(&corev1.Pod{}, "spec.nodeName", func(obj client.Object) []string {
+			pod := obj.(*corev1.Pod)
+			return []string{pod.Spec.NodeName}
+		}).
+		Build()
 	rater := NewTopologyRater(cl)
 
 	cfg := &gameKruiseV1alpha1.TopologyDeletionPriorityConfig{}
@@ -47,4 +60,3 @@ func TestTopologyRater_Basic(t *testing.T) {
 		t.Fatalf("unexpected priority: got=%d want=%d", got.IntVal, 85)
 	}
 }
-