stdout := &bytes.Buffer{}
	stderr := &bytes.Buffer{}
	externalCommand.Stdout = stdout
	externalCommand.Stderr = stderr

	err := externalCommand.Run()

	if len(stdout.String()) != 0 {
		log.Debugf("Command output: \n%v", stdout.String())
	}

	if err != nil || len(stderr.Bytes()) != 0 {
		log.Debugf("Command error output: \n%v", stderr.String())
		return errors.New(stderr.String())
	}

	return nil

			notExpected: "-    istiocoredns:",
			// 'profile diff' "fails" so that the error level `$?` is 1, not 0, if there is a diff
			shouldFail: false,
		},
	}

	l := clog.NewConsoleLogger(os.Stdout, os.Stderr, nil)
	for i, c := range cases {
		t.Run(fmt.Sprintf("case %d %q", i, c.args), func(t *testing.T) {
			args := strings.Split(c.args, " ")
			setFlag := fmt.Sprintf("installPackagePath=%s", snapshotCharts)

	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,
		Revision:             revision,
		WebhookName:          webhookName,
		ManifestsPath:        manifestsPath,

			// istioctl kube-inject is typically redirected to a .yaml file;
			// the default for log messages should be stderr, not stdout
			root := c.Root()
			if root != nil {
				_ = c.Root().PersistentFlags().Set("log_target", "stderr")
			}
			if c.Parent() != nil && c.Parent().PersistentPreRunE != nil {
				return c.Parent().PersistentPreRunE(c, args)
			}

			return nil
		},

			operatorNamespace: "operator-test-namespace",
			watchedNamespaces: "istio-test-namespace1,istio-test-namespace2",
			manifestsPath:     string(snapshotCharts),
		},
	}

	l := clog.NewConsoleLogger(os.Stdout, os.Stderr, installerScope)
	_, gotYAML, err := renderOperatorManifest(rootArgs, &oiArgs.common)
	if err != nil {
		l.LogAndFatal(err)
	}

	if refreshGoldenFiles() {

				if visited[namespacedName] {
					// If we already have information about the pod, skip it.
					continue
				}
				resp, err := queryToOnePod(&pod)
				if err != nil {
					fmt.Fprintf(os.Stderr, "Skip the agent in Pod %s due to the error: %s\n", namespacedName, err.Error())
					continue
				}
				responses = append(responses, resp)
			}
			token = list.ListMeta.GetContinue()
			if token == "" {

	case "info":
		return log.InfoLevel
	}
	return log.InfoLevel
}

func GetLoggingOptions(udsAddress string) *log.Options {
	loggingOptions := log.DefaultOptions()
	loggingOptions.OutputPaths = []string{"stderr"}
	loggingOptions.JSONEncoding = true
	if udsAddress != "" {
		loggingOptions.WithTeeToUDS(udsAddress, constants.UDSLogPath)
	}
	return loggingOptions
}

// CmdAdd is called for ADD requests

  // Defaults to true.
  // +optional
  optional bool stdout = 2;

  // Stderr if true indicates that stderr is to be redirected for the attach call.
  // Defaults to true.
  // +optional
  optional bool stderr = 3;

  // TTY if true indicates that a tty will be allocated for the attach call.
  // This is passed through the container runtime so the tty

	defer func() {
		version.DockerInfo.Hub, version.DockerInfo.Tag = tmpHub, tmpTag
	}()
	version.DockerInfo.Hub = "testHub"
	version.DockerInfo.Tag = "testTag"
	l := clog.NewConsoleLogger(os.Stdout, os.Stderr, installerScope)
	_, iop, err := manifest.GenerateConfig(nil, []string{"installPackagePath=" + string(liveCharts)}, true, nil, l)
	if err != nil {
		t.Fatal(err)
	}