deleteFromTables(new String[]{"user_role", "role"});
    public void testAddAndRemoveRole() throws Exception {        role = new Role("testrole");        role.setDescription("new role descr");        dao.saveRole(role);        assertNotNull(role.getName());        dao.removeRole("testrole");        endTransaction();        role = dao.getRoleByName("testrole");        assertNull(role);    }