    @Test
    public void testExecute() {

        TopicClusterSubCommand cmd = new TopicClusterSubCommand();
        Options options = ServerUtil.buildCommandlineOptions(new Options());
        String[] subargs = new String[] {"-t unit-test"};
        final CommandLine commandLine =
            ServerUtil.parseCmdLine("mqadmin " + cmd.commandName(), subargs, cmd.buildCommandlineOptions(options), new PosixParser());
        assertThat(commandLine.getOptionValue('t').trim()).isEqualTo("unit-test");
    }