assertEquals(0, count);
    }

    // ==========================================================================
    // Test double: TestSearchEngineClient
    // ==========================================================================

    private static class TestSearchEngineClient extends SearchEngineClient {

        // Track method calls
        List<String> calledMethods = new ArrayList<>();

    private TestCrawlingInfoHelper crawlingInfoHelper;
    private TestSearchLogHelper searchLogHelper;
    private TestLabelTypeHelper labelTypeHelper;
    private TestLanguageHelper languageHelper;
    private TestSearchEngineClient searchEngineClient;
    private TestIngestFactory ingestFactory;
    private FessConfig.SimpleImpl fessConfig;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {

        searchLogHelper = new TestSearchLogHelper();
        languageHelper = new TestLanguageHelper();
        fessConfig = new TestFessConfig();
        searchEngineClient = new TestSearchEngineClient();
        dataService = new TestDataService();
        urlQueueService = new TestUrlQueueService();
        urlFilterService = new TestUrlFilterService();
        clickLogBhv = new TestClickLogBhv();