DictionaryExpiredException original = new DictionaryExpiredException();

        // Serialize
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(baos);
        oos.writeObject(original);
        oos.close();

        // Deserialize
        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

    }

    // Test execute with exception in booster
    public void test_execute_withException() {
        TestScoreBooster booster1 = new TestScoreBooster(100L);
        ExceptionScoreBooster booster2 = new ExceptionScoreBooster();
        TestScoreBooster booster3 = new TestScoreBooster(300L);

        scoreUpdater.addScoreBooster(booster1);
        scoreUpdater.addScoreBooster(booster2);

    }

    public void test_nestedCause() {
        // Test with nested exceptions
        RuntimeException rootCause = new RuntimeException("Root cause");
        ParseException parseException = new ParseException("Parse error");
        parseException.initCause(rootCause);
        QueryParseException queryParseException = new QueryParseException(parseException);

        assertEquals(parseException, queryParseException.getCause());

    public void test_insert_multipleChains() {
        User user = createTestUser("testuser");
        TestAuthenticationChain chain1 = new TestAuthenticationChain();
        TestAuthenticationChain chain2 = new TestAuthenticationChain();
        TestAuthenticationChain chain3 = new TestAuthenticationChain();

        authenticationManager.addChain(chain1);
        authenticationManager.addChain(chain2);

        // Test basic process execution
        TestWebApiManager manager = new TestWebApiManager("/api");

        TestHttpServletRequest request = new TestHttpServletRequest();
        request.setRequestURI("/api/test");
        TestHttpServletResponse response = new TestHttpServletResponse();
        TestFilterChain chain = new TestFilterChain();

        manager.process(request, response, chain);

        TestAuthenticationChain chain = new TestAuthenticationChain();
        chain.updateThrowsException = false;

        chain.update(null);

        assertEquals(1, chain.updateCalls.size());
        assertNull(chain.updateCalls.get(0));
    }

    // Test update with multiple calls
    public void test_update_multipleCalls() {
        TestAuthenticationChain chain = new TestAuthenticationChain();

        // Setup
        final String message = "Test SSO error message";
        final Exception cause = new RuntimeException("Test cause");
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);

        // Execute
        final SsoMessageException exception = new SsoMessageException(messageCode, message, cause);

        // Verify
        assertNotNull(exception);

    // Test custom properties
    public void xtest_customProperties() {
        // Create custom FessEnv with custom properties
        FessEnv.SimpleImpl customEnv = new FessEnv.SimpleImpl() {
            protected Properties prepareProperties() {
                Properties props = new Properties();
                props.setProperty(FessEnv.lasta_di_SMART_DEPLOY_MODE, "cool");
                props.setProperty(FessEnv.DEVELOPMENT_HERE, "false");

    }

    public void test_toSlackMessage_withLongContent() {
        MockSMailPostingDiscloser discloser = new MockSMailPostingDiscloser();

        StringBuilder longSubject = new StringBuilder();
        StringBuilder longContent = new StringBuilder();
        for (int i = 0; i < 100; i++) {
            longSubject.append("Subject Line ").append(i).append(" ");

        // Test OK status
        ApiResult okResult = new ApiResult.ApiResponse().status(Status.OK).result();
        assertNotNull(okResult);

        // Test BAD_REQUEST status
        ApiResult badRequestResult = new ApiResult.ApiResponse().status(Status.BAD_REQUEST).result();
        assertNotNull(badRequestResult);

        // Test UNAUTHORIZED status