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

    Assert.assertNull(DateUtil.addDate(0, 0));
    Assert.assertEquals(new Date(1_778_410_800_000L), DateUtil.addDate(
            new Date(1_515_585_600_000L), 2, 100));
}