### Question:
GetBrokerConfigCommand implements SubCommand { @Override public void execute(final CommandLine commandLine, final Options options, final RPCHook rpcHook) throws SubCommandException { DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(rpcHook); defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis())); try { if (commandLine.hasOption('b')) { String brokerAddr = commandLine.getOptionValue('b').trim(); defaultMQAdminExt.start(); getAndPrint(defaultMQAdminExt, String.format("============%s============\n", brokerAddr), brokerAddr); } else if (commandLine.hasOption('c')) { String clusterName = commandLine.getOptionValue('c').trim(); defaultMQAdminExt.start(); Map<String, List<String>> masterAndSlaveMap = CommandUtil.fetchMasterAndSlaveDistinguish(defaultMQAdminExt, clusterName); for (String masterAddr : masterAndSlaveMap.keySet()) { getAndPrint( defaultMQAdminExt, String.format("============Master: %s============\n", masterAddr), masterAddr ); for (String slaveAddr : masterAndSlaveMap.get(masterAddr)) { getAndPrint( defaultMQAdminExt, String.format("============My Master: %s=====Slave: %s============\n", masterAddr, slaveAddr), slaveAddr ); } } } } catch (Exception e) { throw new SubCommandException(this.getClass().getSimpleName() + " command failed", e); } finally { defaultMQAdminExt.shutdown(); } }  @Override String commandName(); @Override String commandDesc(); @Override Options buildCommandlineOptions(final Options options); @Override void execute(final CommandLine commandLine, final Options options, final RPCHook rpcHook);  }### Answer:
@Ignore @Test public void testExecute() throws SubCommandException { GetBrokerConfigCommand cmd = new GetBrokerConfigCommand(); Options options = ServerUtil.buildCommandlineOptions(new Options()); String[] subargs = new String[] {"-b 127.0.0.1:10911", "-c default-cluster"}; final CommandLine commandLine = ServerUtil.parseCmdLine("mqadmin " + cmd.commandName(), subargs, cmd.buildCommandlineOptions(options), new PosixParser()); cmd.execute(commandLine, options, null); }