cmd.SetOut(&out)
	cmd.SetErr(&out)

	fErr := cmd.Execute()
	output := out.String()

	if c.expectedOutput != "" && c.expectedOutput != output {
		t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {

      ListenableFuture<V> future) {
    if (future.isDone()) {
      return future;
    }
    NonCancellationPropagatingFuture<V> output = new NonCancellationPropagatingFuture<>(future);
    future.addListener(output, directExecutor());
    return output;
  }

  /** A wrapped future that does not propagate cancellation to its delegate. */

		case output == "" && testCase.dlURL != "" && testCase.older > 0:
			t.Errorf("Testcase %d: newer release is available but got empty update message!", i+1)
		case output == "" && (testCase.dlURL == "" || testCase.older <= 0):
			// Valid no update message case. No further
			// validation needed.
			continue
		case !strings.Contains(output, line1):

	cmd.SetErr(&out)

	fErr := cmd.Execute()
	output := out.String()

	if c.expectedOutput != "" && c.expectedOutput != output {
		t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {

	return &sdsWriter{
		w:      w,
		output: format,
	}
}

// sdsWriter is provided concrete implementation of SDSWriter
type sdsWriter struct {
	w      io.Writer
	output Format
}

// PrintSecretItems uses the user supplied output format to determine how to display the diffed secrets
func (w *sdsWriter) PrintSecretItems(secrets []SecretItem) error {
	var err error
	switch w.output {
	case JSON:

	cmd.SetErr(&out)

	fErr := cmd.Execute()
	output := out.String()

	if c.expectedOutput != "" && c.expectedOutput != output {
		t.Fatalf("Unexpected output for 'istioctl %s'\n got: %q\nwant: %q", strings.Join(c.args, " "), output, c.expectedOutput)
	}

	if c.expectedString != "" && !strings.Contains(output, c.expectedString) {

		})
	}
}

func checkOutput(t *testing.T, output string, expected, unexpected []string) {
	t.Helper()
	for _, expected := range expected {
		if !strings.Contains(output, expected) {
			t.Errorf("expected %s included in writer output, did not find", expected)
		}
	}
	for _, unexpected := range unexpected {
		if strings.Contains(output, unexpected) {

  auto outputs = parallel_device.Execute(
      context.get(), {reduced_values.get(), run_collective.get()},
      "AssertAndCollective", TFE_OpGetAttrs(call_op.get()),
      /*expected_max_outputs=*/1, status.get());
  ASSERT_EQ(TF_GetCode(status.get()), TF_OK) << TF_Message(status.get());
  ASSERT_EQ(outputs->size(), 1);
  ParallelTensor* parallel_result = (*outputs)[0].get();

	msg := color.RedBold(entry.Trace.Message)
	output := fmt.Sprintf("\n%s\n%s%s%s%s%s%s\nError: %s%s\n%s",
		apiString, timeString, deploymentID, requestID, remoteHost, host, userAgent,
		msg, tagString, strings.Join(trace, "\n"))

	fmt.Fprintln(c.output, output)
	return nil
}

// New initializes a new logger target
// which prints log directly in the standard
// output.
func New(w io.Writer) *Target {

			// Print banner with or without the log tag
			if !tagPrinted {
				fmt.Fprint(Output, logBanner)
				tagPrinted = true
			} else {
				fmt.Fprint(Output, emptyBanner)
			}
			// Restore the text color of the error message
			ansiRestoreAttributes()
			ansiMoveRight(bannerWidth)
			// Continue  error message printing
			fmt.Fprintln(Output, line)
			break
		}
	}

	// Exit because this is a fatal error message