Added UTs for resourceregistry in pkg/generated

pkg/generated/listers/search/v1alpha1/resourceregistry_test.go

@@ -0,0 +1,104 @@
+/*
+Copyright The Karmada Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	"errors"
+	"testing"
+
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/client-go/tools/cache"
+
+	"github.com/karmada-io/karmada/pkg/apis/search/v1alpha1"
+)
+
+type mockIndexer struct {
+	cache.Indexer
+}
+
+func (m *mockIndexer) GetByKey(string) (interface{}, bool, error) {
+	return nil, false, errors.New("mock error")
+}
+
+func TestResourceRegistryLister_List(t *testing.T) {
+	indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{})
+	lister := NewResourceRegistryLister(indexer)
+
+	registries, err := lister.List(labels.Everything())
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	if len(registries) != 0 {
+		t.Fatalf("expected empty list, got %v", registries)
+	}
+
+	registry := &v1alpha1.ResourceRegistry{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "default",
+		},
+	}
+	err = indexer.Add(registry)
+	if err != nil {
+		return
+	}
+
+	registries, err = lister.List(labels.Everything())
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	if len(registries) != 1 {
+		t.Fatalf("expected list of length 1, got %v", len(registries))
+	}
+}
+
+func TestResourceRegistryLister_Get(t *testing.T) {
+	indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{})
+	lister := NewResourceRegistryLister(indexer)
+
+	_, err := lister.Get("non-existent")
+	if !apierrors.IsNotFound(err) {
+		t.Fatalf("expected NotFound error, got %v", err)
+	}
+
+	registry := &v1alpha1.ResourceRegistry{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "default",
+		},
+	}
+	err = indexer.Add(registry)
+	if err != nil {
+		return
+	}
+
+	obj, err := lister.Get("default")
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	if obj == nil {
+		t.Fatalf("expected a ResourceRegistry, got nil")
+	}
+
+	mockIndexer := &mockIndexer{Indexer: indexer}
+	listerWithMock := NewResourceRegistryLister(mockIndexer)
+
+	_, err = listerWithMock.Get("default")
+	if err == nil || err.Error() != "mock error" {
+		t.Fatalf("expected mock error, got %v", err)
+	}
+}