### Question:
ExecutorBizImpl implements ExecutorBiz { @Override public ReturnT<String> beat() { return ReturnT.SUCCESS; }  @Override ReturnT<String> beat(); @Override ReturnT<String> idleBeat(int jobId); @Override ReturnT<String> kill(int jobId); @Override ReturnT<LogResult> log(long logDateTim, long logId, int fromLineNum); @Override ReturnT<String> run(TriggerParam triggerParam);  }### Answer:
@Test public void beat() { final ReturnT<String> retval = executorBiz.beat(); Assert.assertNotNull(retval); Assert.assertNull(((ReturnT<String>) retval).getContent()); Assert.assertEquals(200, retval.getCode()); Assert.assertNull(retval.getMsg()); }