private IndexUpdateCallbackImpl indexUpdateCallback;
    private TestSystemHelper systemHelper;
    private TestIndexingHelper indexingHelper;
    private TestCrawlingInfoHelper crawlingInfoHelper;
    private TestSearchLogHelper searchLogHelper;
    private TestLabelTypeHelper labelTypeHelper;
    private TestLanguageHelper languageHelper;
    private TestSearchEngineClient searchEngineClient;
    private TestIngestFactory ingestFactory;

        systemHelper = new TestSystemHelper();
        indexingHelper = new TestIndexingHelper();
        intervalControlHelper = new TestIntervalControlHelper();
        searchLogHelper = new TestSearchLogHelper();
        languageHelper = new TestLanguageHelper();
        fessConfig = new TestFessConfig();
        searchEngineClient = new TestSearchEngineClient();
        dataService = new TestDataService();