activityHelper.permissionChanged(OptionalThing.empty());
        assertEquals("action:UPDATE_PERMISSION\tuser:-\tpermissions:-", localLogMsg.get());

        activityHelper.permissionChanged(createUser("testuser", new String[0]));
        assertEquals("action:UPDATE_PERMISSION\tuser:testuser\tpermissions:-", localLogMsg.get());

        activityHelper.permissionChanged(createUser("testuser", new String[] { "111", "222" }));

                return name.toLowerCase();
            }
        }, "ldapManager");

        ComponentUtil.register(new ActivityHelper() {
            @Override
            public void permissionChanged(OptionalThing<FessUserBean> userBean) {
                activityHelperCalled.set(true);
                assertTrue(userBean.isPresent());
                assertSame(ldapUser, userBean.get().getFessUser());
            }

        valueMap.put("execute", execute);
        log(valueMap);
    }

    /**
     * Log the permission changed activity.
     * @param user The user.
     */
    public void permissionChanged(final OptionalThing<FessUserBean> user) {
        final Map<String, String> valueMap = new LinkedHashMap<>();
        valueMap.put("action", Action.UPDATE_PERMISSION.name());