boostdocpager.clear();
        assertEquals(0, boostdocpager.getAllRecordCount());
        assertEquals(0, boostdocpager.getAllPageCount());
        assertEquals(false, boostdocpager.isExistPrePage());
        assertEquals(false, boostdocpager.isExistNextPage());
        assertEquals(25, boostdocpager.getPageSize());
        assertEquals(1, boostdocpager.getCurrentPageNumber());
        assertNull(boostdocpager.id);

        duplicatehostpager.clear();
        assertEquals(0, duplicatehostpager.getAllRecordCount());
        assertEquals(0, duplicatehostpager.getAllPageCount());
        assertEquals(false, duplicatehostpager.isExistPrePage());
        assertEquals(false, duplicatehostpager.isExistNextPage());
        assertEquals(25, duplicatehostpager.getPageSize());
        assertEquals(1, duplicatehostpager.getCurrentPageNumber());

        badwordpager.clear();
        assertEquals(0, badwordpager.getAllRecordCount());
        assertEquals(0, badwordpager.getAllPageCount());
        assertEquals(false, badwordpager.isExistPrePage());
        assertEquals(false, badwordpager.isExistNextPage());
        assertEquals(25, badwordpager.getPageSize());
        assertEquals(1, badwordpager.getCurrentPageNumber());
        assertNull(badwordpager.id);

    }

    @Test
    public void test_userPager_existPrePage() {
        final UserPager pager = new UserPager();
        assertFalse(pager.isExistPrePage());

        pager.setExistPrePage(true);
        assertTrue(pager.isExistPrePage());
    }

    @Test
    public void test_userPager_existNextPage() {
        final UserPager pager = new UserPager();