/**
 * Helper class for indexing operations in the Fess search engine.
 * This class provides functionality for sending documents to the search engine,
 * managing document lifecycle operations (create, update, delete), and handling
 * thumbnail processing during indexing.
 *
 * <p>The IndexingHelper manages bulk operations, handles retries on failures,
 * and provides various query-based operations for document management.

     * all access is properly synchronized via indexUpdateCallback lock.
     */
    @Test
    public void test_deleteUrlList_synchronizedAccess() throws Exception {
        // Create a mock IndexUpdateCallback for synchronization
        IndexUpdateCallback mockCallback = new IndexUpdateCallback() {
            @Override
            public void store(DataStoreParams paramMap, Map<String, Object> dataMap) {

            queryFieldConfig = new QueryFieldConfig();
            queryFieldConfig.init();
        }
    }

    @Test
    public void test_init_withAdditionalDefaultFields() {
        // Create custom FessConfig with additional default fields
        FessConfig fessConfig = new FessConfig.SimpleImpl() {

            @Override
            public String getQueryAdditionalDefaultFields() {

    @Test
    public void test_appendJarFile() throws IOException {
        StringBuilder buf = new StringBuilder();
        File libDir = new File(tempDir, "lib");
        assertTrue(libDir.mkdir());

        // Create test jar files
        File jar1 = new File(libDir, "test1.jar");
        File jar2 = new File(libDir, "test2.JAR");
        File notJar = new File(libDir, "test.txt");
        assertTrue(jar1.createNewFile());

    private static String labelId;
    private static String crawlLabelId;

    @BeforeAll
    protected static void initAll() {
        RestAssured.baseURI = getFessUrl();
        settingTestToken();

        // create and execute a file crawler
        labelId = createLabel();
        crawlLabelId = createCrawlLabel();

        createFileConfig();
        logger.info("FileConfig is created");
        refresh();

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            file.setReadable(true, true);
            file.setWritable(false, false);
            file.setWritable(true, true);
            if (logger.isDebugEnabled()) {
                logger.debug("Create {} as a temp file.", file.getAbsolutePath());
            }
            return file;
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**

                                        <la:message key="labels.crud_button_back"/>
                                    </la:link>
                                    <button type="submit" class="btn btn-success" name="create"
                                            value="<la:message key="labels.crud_button_create" />">
                                        <i class="fa fa-plus" aria-hidden="true"></i>

            }
        }
    }

    /**
     * Creates a CURL request for the specified URL with proxy configuration if available.
     *
     * @param url the URL to create a request for
     * @return a configured CURL request
     */
    protected CurlRequest createCurlRequest(final String url) {
        final CurlRequest request = Curl.get(url);

            } else if (logger.isDebugEnabled()) {
                logger.debug("No image file exists: {}", noImageFile.getAbsolutePath());
            }
        } catch (final Exception e) {
            logger.warn("Failed to create thumbnail for {}", entity, e);
        }
    }

    /**
     * Offers a document for thumbnail generation.
     *
     * @param docMap the document data map