@Test
@Ignore // 暂时忽略，测试不通过，add by 芋艿
public void testGetDayEnd() {

    Assert.assertNull(DateUtil.getDayEnd(null));
    Assert.assertEquals(new Date(1_515_628_799_999L), DateUtil.getDayEnd(
            new Date(1_515_585_600_000L)));
}