private FessConfig createTestFessConfig() {
        return new TestFessConfig();
    }

    // Test configuration class extending FessConfig.SimpleImpl
    private static class TestFessConfig extends FessConfig.SimpleImpl {
        private static final long serialVersionUID = 1L;

        @Override
        public String getApiPingSearchEngineFields() {

        public Object execute(String scriptType, String script) {
            return null;
        }
    }

    // Test configuration class extending FessConfig.SimpleImpl
    private static class TestFessConfig extends FessConfig.SimpleImpl {
        private static final long serialVersionUID = 1L;
    }

        assertNotNull(searchLogHelper.clickLogQueue);
        assertTrue(searchLogHelper.clickLogQueue.isEmpty());
    }

    // Mock classes
    private static class MockFessConfig extends FessConfig.SimpleImpl {
        private static final long serialVersionUID = 1L;

        @Override
        public boolean isUserInfo() {
            return true;
        }

        @Override

        assertNotNull(result);
        assertEquals(1, shutdownListeners.size());
    }

    // Test configuration class extending FessConfig.SimpleImpl
    private static class TestFessConfig extends FessConfig.SimpleImpl {
        private static final long serialVersionUID = 1L;

        public TestFessConfig() {
            super();

        // Assert error message in result
        assertTrue(result.contains("Status update failed"));
    }

    // Test configuration class extending FessConfig.SimpleImpl
    private static class TestFessConfig extends FessConfig.SimpleImpl {
        private static final long serialVersionUID = 1L;

        @Override
        public int getPurgeSearchLogDay() {
            return 30;
        }

        assertEquals(10, view3.getQueryMap().size());
    }

    public void test_getUrlLink() throws IOException {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            public boolean isAppendQueryParameter() {
                return false;
            }

            public String getIndexFieldUrl() {

                return 3L;
            }
        };
        ComponentUtil.register(mockSearchEngineClient, "searchEngineClient");

        // Mock FessConfig
        FessConfig mockFessConfig = new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getIndexDocumentUpdateIndex() {
                return "fess.update";
            }

                }
            };
            ComponentUtil.register(mockSystemHelper, "systemHelper");

            // Register mock FessConfig
            FessConfig mockConfig = new FessConfig.SimpleImpl() {
                @Override
                public Integer getThumbnailSystemMonitorIntervalAsInteger() {
                    return 60;
                }
            };

    public void setUp() throws Exception {
        super.setUp();
        popularWordHelper = new PopularWordHelper() {
            @Override
            public void init() {
                fessConfig = new FessConfig.SimpleImpl() {
                    @Override
                    public Integer getSuggestPopularWordCacheSizeAsInteger() {
                        return 1000;
                    }

                    @Override

            public void setForceStop(boolean value) {
                forceStop.set(value);
            }
        }, "systemHelper");

        // Minimal FessConfig
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override
            public int getCrawlingThreadCount() {
                return 1; // Reduced from 2 to minimize thread overhead