if (sessionId == null) { // create session id
            sessionId = RandomStringUtils.randomAlphabetic(15);
        }
        resultBuf.append("Session Id: ").append(sessionId).append("\n");
        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        final StringBuilder resultBuf = new StringBuilder();

        // purge crawling sessions
        try {
            crawlingInfoService.deleteBefore(systemHelper.getCurrentTimeAsLong());
        } catch (final Exception e) {
            logger.error("Failed to purge crawling sessions.", e);
            resultBuf.append(e.getMessage()).append("\n");
        }

        // purge search logs
        try {

    }

    public void test_sessionCountId() {
        final String sessionId = "12345";
        final String sessionCountId = sessionId + "-1";
        assertNull(crawlingConfigHelper.get(sessionCountId));
        crawlingConfigHelper.store(sessionId, crawlingConfigHelper.getCrawlingConfig("W1"));
        assertEquals("1", crawlingConfigHelper.get(sessionCountId).getId());

     * Initiates crawling for specified web and file configurations.
     *
     * @param sessionId The session ID for this crawling operation
     * @param webConfigIdList List of web configuration IDs to crawl, null for all
     * @param fileConfigIdList List of file configuration IDs to crawl, null for all
     */
    public void crawl(final String sessionId, final List<String> webConfigIdList, final List<String> fileConfigIdList) {

    public void test_crawl_withNullParameters() {
        try {
            webFsIndexHelper.crawl("sessionId", null, null);
            assertTrue(true);
        } catch (Exception e) {
            assertTrue(true);
        }
    }

    public void test_crawl_withEmptyLists() {
        try {
            webFsIndexHelper.crawl("sessionId", Collections.emptyList(), Collections.emptyList());
            assertTrue(true);

        if (sessionId == null) { // create session id
            sessionId = RandomStringUtils.randomAlphabetic(15);
        }
        resultBuf.append("Session Id: ").append(sessionId).append("\n");
        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        if (sessionId == null) { // create session id
            sessionId = RandomStringUtils.randomAlphabetic(15);
        }
        resultBuf.append("Session Id: ").append(sessionId).append("\n");
        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        ThumbnailGenerator.Options options = new ThumbnailGenerator.Options();
        options.sessionId = "test-session";
        options.name = "test-name";
        options.propertiesPath = "/path/to/props";
        options.numOfThreads = 5;

        String expected = "Options [sessionId=test-session, name=test-name, propertiesPath=/path/to/props, numOfThreads=5]";
        assertEquals(expected, options.toString());

    public void test_sessionIdGeneration() {
        assertNull(suggestJob.sessionId);

        mockProcessHelper.setExitValue(0);
        suggestJob.execute();

        assertNotNull(suggestJob.sessionId);
        assertEquals(15, suggestJob.sessionId.length());
        // Check that session ID contains only alphabetic characters
        assertTrue(suggestJob.sessionId.matches("[a-zA-Z]+"));
    }

        String result = pythonJob.execute();

        assertNotNull(result);
        assertTrue(result.contains("Session Id:"));
        assertNotNull(pythonJob.sessionId);
        assertTrue(pythonJob.sessionId.length() >= 10);

        // The test doesn't actually call the real process since ServletContext.getRealPath returns null in test
        // and causes an exception which is caught and added to result