public void test_userPager_pageSize() {
        final UserPager pager = new UserPager();
        assertEquals(25, pager.getPageSize()); // Default page size
    }

    @Test
    public void test_userPager_setCurrentPageNumber() {
        final UserPager pager = new UserPager();
        pager.setCurrentPageNumber(5);
        assertEquals(5, pager.getCurrentPageNumber());
    }

    @Test