### Question:
RedisMsService implements IMsService { @Override public TacMsDO getMs(String msCode) { return hashOperations.get(getMainKey(), msCode); }  @Override TacMsDO createMs(TacMsDO tacMsDO); @Override Boolean removeMs(String msCode); @Override Boolean invalidMs(String msCode); @Override Boolean updateMs(String msCode, TacMsDO tacMsDO); @Override TacMsDO getMs(String msCode); @Override List<TacMsDO> getAllMs();  }### Answer:
@Test public void getMs() { TacMsDO ms = redisMsService.getMs(tacMsDO.getCode()); assertNull(ms); }