command, args, retcode, stdout, stderr)
	}
	return stdout, stderr, retcode, nil
}

// RunSubCommand is a utility function for kubeadm testing that executes a Cobra sub command
func RunSubCommand(t *testing.T, subCmds []*cobra.Command, command string, output io.Writer, args ...string) error {
	subCmd := getSubCommand(t, subCmds, command)
	subCmd.SetOut(output)

			// exec renew
			renewCmds := getRenewSubCommands(os.Stdout, tmpDir)
			args := fmt.Sprintf("--cert-dir=%s", tmpDir)
			if len(test.Args) > 0 {
				args = test.Args + " " + args
			}
			err := cmdtestutil.RunSubCommand(t, renewCmds, test.command, io.Discard, args)
			// certs renew doesn't support positional Args
			if (err != nil) != test.expectedError {