public void testGetTimeOfDayBy0To23Hour() throws Exception {
   assertEquals(TimeUtil.TimeOfDay.AM, TimeUtil.getTimeOfDayBy0To23Hour(0));
   assertEquals(TimeUtil.TimeOfDay.AM, TimeUtil.getTimeOfDayBy0To23Hour(8));
   assertEquals(TimeUtil.TimeOfDay.PM, TimeUtil.getTimeOfDayBy0To23Hour(12));
   assertEquals(TimeUtil.TimeOfDay.PM, TimeUtil.getTimeOfDayBy0To23Hour(20));
 }
 public void testGetTimeOfDayBy0To23Hour1() throws Exception {
   assertEquals(TimeUtil.TimeOfDay.AM, TimeUtil.getTimeOfDayBy0To23Hour("0"));
   assertEquals(TimeUtil.TimeOfDay.AM, TimeUtil.getTimeOfDayBy0To23Hour("8"));
   assertEquals(TimeUtil.TimeOfDay.PM, TimeUtil.getTimeOfDayBy0To23Hour("12"));
   assertEquals(TimeUtil.TimeOfDay.PM, TimeUtil.getTimeOfDayBy0To23Hour("20"));
 }