### Question:
DailyUtils { public static String getSomeDayDate(int N) { Date now = new Date(); long time = now.getTime() / 1000 + N * 86400; DateFormat format = new SimpleDateFormat("yyyy-MM-dd"); String date = format.format(new Date(time * 1000l)); return date.replaceAll("-", ""); }  static String getSomeDayDate(int N); static int getHour(long time);  }### Answer:
@Test public void testGetSomeDayDate() { assertTrue(DailyUtils.getSomeDayDate(0).length() == 8); }