if byID {
			var err error
			idx, err = strconv.Atoi(pool)
			if err != nil {
				// We didn't find any matching pools, invalid input
				writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errInvalidArgument), r.URL)
				return
			}
		} else {
			idx = globalEndpoints.GetPoolIdx(pool)
			if idx == -1 {
				// We didn't find any matching pools, invalid input

		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(),
			strings.Join(c.Args, " "), output, c.ExpectedRegexp)
	}

	if c.GoldenFilename != "" {
		util.CompareContent(t, []byte(output), c.GoldenFilename)
	}

	if c.WantException {
		if fErr == nil {
			t.Fatalf("Wanted an exception for 'istioctl %s', didn't get one, output was %q",
				strings.Join(c.Args, " "), output)

	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(), strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {
			t.Fatalf("Wanted an exception for 'istioctl %s', didn't get one, output was %q",
				strings.Join(c.args, " "), output)
		}
	} else {
		if fErr != nil {

	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(), strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {
			t.Fatalf("Wanted an exception for 'istioctl %s', didn't get one, output was %q",
				strings.Join(c.args, " "), output)
		}
	} else {
		if fErr != nil {

			wlocked <- true
		}
	}()
	for i := 0; i < n; i++ {
		<-rlocked
		rl.Unlock()
		select {
		case <-wlocked:
			t.Fatal("RLocker() didn't read-lock it")
		default:
		}
		rl.Unlock()
		<-wlocked
		select {
		case <-rlocked:
			t.Fatal("RLocker() didn't respect the write lock")
		default:
		}
		wl.Unlock()
	}
}

// Borrowed from rwmutex_test.go
func TestUnlockPanic(t *testing.T) {

	if err := types.LoadArgs(kubeletArgs, &k8sArgs); err != nil {
		t.Fatalf("LoadArgs failed with error: %v", err)
	}

	if string(k8sArgs.K8S_POD_NAMESPACE) == "" || string(k8sArgs.K8S_POD_NAME) == "" {
		t.Fatalf("LoadArgs didn't convert args properly, K8S_POD_NAME=\"%s\";K8S_POD_NAMESPACE=\"%s\"",
			string(k8sArgs.K8S_POD_NAME), string(k8sArgs.K8S_POD_NAMESPACE))
	}

		}

		// If object to validate has no namespace, set it (the validity of a CR
		// may depend on its namespace; for example a VirtualService with exportTo=".")
		if obj.Namespace == "" {
			// If the user didn't specify --namespace, and is validating a CR with no namespace, use "default"
			if defaultNamespace == "" {
				defaultNamespace = metav1.NamespaceDefault
			}
			obj.Namespace = defaultNamespace
		}

	t.Helper()

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for 'istioctl %s'\n got %v\nwant: %v", c.args, output, c.expectedString)
	}

	if c.notExpected != "" && strings.Contains(output, c.notExpected) {
		t.Fatalf("Output didn't match for 'istioctl %s'\n got %v\nDON'T want: %v", c.args, output, c.expectedString)
	}

	if c.shouldFail {

	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for '%s %s'\n got %v\nwant: %v", cmd.Name(), strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {
			t.Fatalf("Wanted an exception for 'istioctl %s', didn't get one, output was %q",
				strings.Join(c.args, " "), output)
		}
	} else {
		if fErr != nil {

	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {
		t.Fatalf("Output didn't match for 'istioctl %s'\n got %v\nwant: %v", strings.Join(c.args, " "), output, c.expectedString)
	}

	if c.wantException {
		if fErr == nil {
			t.Fatalf("Wanted an exception for 'istioctl %s', didn't get one, output was %q",
				strings.Join(c.args, " "), output)
		}
	} else {
		if fErr != nil {