CommandExecutionException cmdNotFound = new CommandExecutionException("Command 'xyz' not found");
        assertTrue(cmdNotFound.getMessage().contains("not found"));

        // Scenario 2: Command timeout
        CommandExecutionException timeout =
                new CommandExecutionException("Command execution timed out after 30 seconds", new RuntimeException("Timeout"));

        CrawlingConfigHelper crawlingConfigHelper = new CrawlingConfigHelper() {
            @Override
            public List<WebConfig> getWebConfigListByIds(List<String> webConfigIdList) {
                List<WebConfig> configs = new ArrayList<>();
                WebConfig config = new WebConfig();
                // Set required properties to prevent skip

            }
        }

        final int threadCount = 10;
        final Thread[] threads = new Thread[threadCount];
        final Exception[] exceptions = new Exception[threadCount];
        final int[] sizes = new int[threadCount];
        final boolean[][] containsResults = new boolean[threadCount][10];

        // Multiple threads read from deleteUrlList
        for (int i = 0; i < threadCount; i++) {

        final List<Map<String, String>> capturedLogs = new ArrayList<>();
        final ActivityHelper spyActivityHelper = createSpyActivityHelper(capturedLogs);

        final TestActionRuntime testRuntime = new TestActionRuntime("/admin/user/");
        final FessAdminAction action =
                createGodHandAction(spyActivityHelper, OptionalThing.of(new FessUserBean(new TestUser("admin", new String[0]))), true);

        UserRoleLoginException exception = new UserRoleLoginException(RootAction.class);

        // Create multiple threads to test synchronized method
        Thread thread1 = new Thread(() -> {
            Throwable result = exception.fillInStackTrace();
            assertNull(result);
        });

        Thread thread2 = new Thread(() -> {
            Throwable result = exception.fillInStackTrace();

        final AtomicBoolean heartbeatCalled = new AtomicBoolean(false);
        final AtomicBoolean fetchCalled = new AtomicBoolean(false);
        final AtomicBoolean cleanupCalled = new AtomicBoolean(false);
        final CoordinatorHelper helper = new CoordinatorHelper() {
            @Override
            public void sendHeartbeat() {

        }
    }

    /**
     * Gets the new input words.
     * Returns a defensive copy to prevent external modification.
     *
     * @return The new input words (defensive copy).
     */
    public String[] getNewInputs() {
        return newInputs == null ? null : newInputs.clone();
    }

    /**
     * Sets the new input words.
     *
     * @param newInputs The new input words.
     */

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        keyMatchHelper = new KeyMatchHelper();
        ComponentUtil.register(new SystemHelper(), "systemHelper");
        ComponentUtil.register(new VirtualHostHelper(), "virtualHostHelper");
    }

    @Test
    public void test_init() {
        try {
            keyMatchHelper.init();

        final File targetDir = new File(userDir, "target");
        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {
            buf.append(cpSeparator);
            buf.append(targetClassesDir.getAbsolutePath());
        }
        // WEB-INF/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/lib")),

        final CsvConfig cfg = new CsvConfig(',', '"', '"');
        cfg.setEscapeDisabled(false);
        cfg.setQuoteDisabled(false);
        @SuppressWarnings("resource")
        final CsvWriter csvWriter = new CsvWriter(writer, cfg);
        try {
            final List<String> list = new ArrayList<>();
            list.add("SuggestWord");
            list.add("Reading");