}
	return p.UpsertPodCacheWithNetns(string(pod.UID), wl), nil
}

// Update the cache with the given Netns. If there is already a Netns for the given uid, we return it, and close the one provided.
func (p *podNetnsCache) UpsertPodCacheWithNetns(uid string, workload WorkloadInfo) Netns {
	// lock current snapshot pod map
	p.mu.Lock()
	defer p.mu.Unlock()
	if existing := p.currentPodCache[uid]; existing.Netns != nil {

	n := NewPodNetnsProcFinder(fakeFs())
	pod := &corev1.Pod{ObjectMeta: metav1.ObjectMeta{
		Name:      "foo",
		Namespace: "bar",
		UID:       types.UID("863b91d4-4b68-4efa-917f-4b560e3e86aa"),
	}}
	podUIDNetns, err := n.FindNetnsForPods(map[types.UID]*corev1.Pod{
		pod.UID: pod,
	})
	if err != nil {
		panic(err)
	}
	defer podUIDNetns.Close()

	if len(podUIDNetns) == 0 {
		t.Fatal("expected to find pod netns")

	"istio.io/istio/pkg/test/util/assert"
)

func TestMeshDataplaneAddsAnnotationOnAdd(t *testing.T) {
	pod := &corev1.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "test",
			Namespace: "test",
			UID:       types.UID("test"),
		},
	}

	fakeCtx := context.Background()
	fakeClientSet := fake.NewSimpleClientset(pod)

	podIP := netip.MustParseAddr("99.9.9.1")
	podIPs := []netip.Addr{podIP}

	server := &fakeServer{}

// (see https://docs.google.com/document/d/1F__vEKeI41P7PPUCMM9PVPYY34pyrvQI5rbTJVnS5c4)
func clusterUID(client kubernetes.Interface) (types.UID, error) {
	kubeSystem, err := client.CoreV1().Namespaces().Get(context.TODO(), "kube-system", metav1.GetOptions{})
	if err != nil {
		return "", err
	}
	return kubeSystem.UID, nil

		ObjectMeta: metav1.ObjectMeta{
			Name: fmt.Sprintf("name-%d", id),
			UID:  types.UID(fmt.Sprintf("uid-%d", id)),
		},
		Spec:   v1.PodSpec{},
		Status: v1.PodStatus{},
	}
	return pod, newFakeNs(devNull.Fd())
}

func connect(ctx context.Context) struct {
	ztunClient *net.UnixConn
	ztunServer *ztunnelServer
	uid        string
} {
	pods := &fakePodCache{}

	pod, ns := podAndNetns()

	pod := &corev1.Pod{ObjectMeta: metav1.ObjectMeta{UID: "testUID"}}
	ns := newFakeNs(inc())
	wl := WorkloadInfo{
		Workload: podToWorkload(pod),
		Netns:    ns,
	}
	netns1 := p.UpsertPodCacheWithNetns(string(pod.UID), wl)
	netnsTaken := p.Take(string(pod.UID))
	if netns1 != netnsTaken {
		t.Fatalf("Expected the original Netns for the same uid, got %p and %p", netns1, ns)
	}
	if nil != p.Take(string(pod.UID)) {

		},
		{
			name:        "custom-uid",
			annotations: map[string]string{annotation.SidecarStatus.Name: "true"},
			customUID:   &customUID,
			customGID:   &customGID,
			golden:      filepath.Join(env.IstioSrc, "cni/pkg/plugin/testdata/custom-uid.txt.golden"),
		},
		{
			name:        "custom-uid-zero",
			annotations: map[string]string{annotation.SidecarStatus.Name: "true"},

type fakeZtunnel struct {
	deletedPods atomic.Int32
	addedPods   atomic.Int32
	addError    error
}

func (f *fakeZtunnel) Run(ctx context.Context) {
}

func (f *fakeZtunnel) PodDeleted(ctx context.Context, uid string) error {
	f.deletedPods.Add(1)
	return nil
}

func (f *fakeZtunnel) PodAdded(ctx context.Context, pod *corev1.Pod, netns Netns) error {
	f.addedPods.Add(1)
	return f.addError
}