try {
            assertEquals("{role}guest", permissionHelper.decode("guest"));
        } finally {
            ComponentUtil.setFessConfig(fessConfig);
        }
    }

    public void test_encode_withComplexValues() {
        assertEquals("******@****.***", permissionHelper.encode("{user}******@****.***"));
        assertEquals("2group/subgroup", permissionHelper.encode("{group}group/subgroup"));