t.Run(tc.name, func(t *testing.T) {
			var out bytes.Buffer

			client := kube.NewFakeClient(tc.webhooksBefore.DeepCopyObject(), tc.namespaces.DeepCopyObject())
			skipConfirmation = true
			err := setTag(context.Background(), client, tc.tag, tc.revision, "istio-system", false, &out, nil)
			if tc.error == "" && err != nil {
				t.Fatalf("expected no error, got %v", err)
			}
			if tc.error != "" {
				if err == nil {

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"sigs.k8s.io/controller-runtime/pkg/client"

	"istio.io/api/operator/v1alpha1"
	"istio.io/istio/istioctl/pkg/cli"
	"istio.io/istio/istioctl/pkg/clioptions"
	revtag "istio.io/istio/istioctl/pkg/tag"
	"istio.io/istio/istioctl/pkg/util"
	v1alpha12 "istio.io/istio/operator/pkg/apis/istio/v1alpha1"
	"istio.io/istio/operator/pkg/cache"
	"istio.io/istio/operator/pkg/helmreconciler"

		},
	}

	cmd.PersistentFlags().BoolVarP(&skipConfirmation, "skip-confirmation", "y", false, skipConfirmationFlagHelpStr)
	return cmd
}

// setTag creates or modifies a revision tag.
func setTag(ctx context.Context, kubeClient kube.CLIClient, tagName, revision, istioNS string, generate bool, w, stderr io.Writer) error {
	opts := &GenerateOptions{
		Tag:                  tagName,