String result = systemHelper.encodeUrlFilter("test{}|\\");
        assertEquals("test{}|\\", result);

        result = systemHelper.encodeUrlFilter("test^path");
        assertEquals("test^path", result);

        result = systemHelper.encodeUrlFilter("test space");
        assertEquals("test+space", result);
    }

    @Test
    public void test_normalizeLang_caseVariations() {

            return permissions;
        }

    }

    @Test
    public void test_setLoggerName() {
        String originalLoggerName = activityHelper.loggerName;
        activityHelper.setLoggerName("test.logger");
        assertEquals("test.logger", activityHelper.loggerName);
        activityHelper.setLoggerName(originalLoggerName);
    }

    @Test
    public void test_setPermissionSeparator() {

        final Map<String, Object> map = Map.of("name", "test-name");
        assertEquals("test-name", coordinatorHelper.getStringValue(map, "name"));
    }

    @Test
    public void test_getStringValue_numeric() {
        final Map<String, Object> map = Map.of("count", 42);
        assertEquals("42", coordinatorHelper.getStringValue(map, "count"));
    }

    @Test
    public void test_getStringValue_null() {

    //                                                                    ================

    @Test
    public void test_validateFilePath_blankPath() {
        final FessAdminAction action = createAction();
        assertThrows(IllegalArgumentException.class, () -> action.validateFilePath(""));
    }

    @Test
    public void test_validateFilePath_nullPath() {
        final FessAdminAction action = createAction();

        super.setUp(testInfo);
        ComponentUtil.register(new SystemHelper(), "systemHelper");
    }

    @Test
    public void test_defaultConstructor() {
        final JobLog jobLog = new JobLog();
        assertNotNull(jobLog);
        assertNull(jobLog.getId());
    }

    @Test
    public void test_constructorWithScheduledJob() {
        final ScheduledJob scheduledJob = createTestScheduledJob();

    }

    @Test
    public void test_setUserInfoCacheSize() {
        int cacheSize = 5000;
        searchLogHelper.setUserInfoCacheSize(cacheSize);
        assertEquals(cacheSize, searchLogHelper.userInfoCacheSize);
    }

    @Test
    public void test_setLoggerName() {
        String loggerName = "test.logger";
        searchLogHelper.setLoggerName(loggerName);

        assertEquals("org.codelibs.fess.test", events.get(0).getLoggerName());
        assertEquals("test error message", events.get(0).getMessage());
        assertNull(events.get(0).getThrowable());
    }

    @Test
    public void test_append_warnEvent_withErrorLevel() {
        final LogEvent event = createLogEvent(Level.WARN, "org.codelibs.fess.test", "test warn message");
        appender.append(event);

        form.id = "test-id";
        form.seqNo = 1L;
        form.primaryTerm = 1L;
        form.crudMode = CrudMode.EDIT;

        assertEquals("test-id", form.id);
        assertEquals(1L, form.seqNo.longValue());
        assertEquals(1L, form.primaryTerm.longValue());
        assertEquals(CrudMode.EDIT, form.crudMode.intValue());
    }

    @Test
    public void test_deleteForm_fields() {

    }

    @Test
    public void test_constructor() {
        LogNotificationTarget target = new LogNotificationTarget();
        assertNotNull(target);
    }

    @Test
    public void test_expired_emptyBuffer() {
        // expired() with empty buffer is no-op (no exception)
        logNotificationTarget.expired();
    }

    @Test
    public void test_flush_callsExpired() {

    }

    @Test
    public void test_isLoggingEnabled_null() {
        final ScheduledJob job = new ScheduledJob();
        assertFalse(job.isLoggingEnabled());
    }

    @Test
    public void test_isEnabled_true() {
        final ScheduledJob job = new ScheduledJob();
        job.setAvailable(Constants.T);
        assertTrue(job.isEnabled());
    }

    @Test
    public void test_isEnabled_false() {