this.documentUrl = documentUrl;
        this.reasoning = reasoning;
    }

    /**
     * Returns the detected intent type.
     *
     * @return the intent type
     */
    public ChatIntent getIntent() {
        return intent;
    }

    /**
     * Returns the Fess query string for search.
     *
     * @return the Fess query string, or null if not available
     */
    public String getQuery() {

        assertEquals(ChatIntent.SEARCH, result.getIntent());
        assertEquals("", result.getQuery());
    }

    @Test
    public void test_search_withNullQuery() {
        final IntentDetectionResult result = IntentDetectionResult.search(null, "test");

        assertEquals(ChatIntent.SEARCH, result.getIntent());
        assertNull(result.getQuery());
    }

    @Test

            if (logger.isDebugEnabled()) {
                logger.debug("[RAG] Intent detected. intent={}, query={}", intentResult.getIntent(), intentResult.getQuery());
            }

            if (intentResult.getIntent() == ChatIntent.UNCLEAR) {
                // Unclear intent - generate answer with empty documents to ask for clarification

            final String truncated = newest.getContent().substring(0, Math.min(budgetChars, newest.getContent().length()));
            request.addMessage(new LlmMessage(newest.getRole(), truncated));
            if (logger.isDebugEnabled()) {
                logger.debug("[RAG:ANSWER] Newest history message truncated to fit budget. originalLength={}, truncatedLength={}",
                        newest.getContent().length(), truncated.length());

        assertEquals("Q2", messages.get(1).getContent());
        assertEquals("A2", messages.get(2).getContent());
        assertEquals("Q3", messages.get(3).getContent());
        assertEquals("A3", messages.get(4).getContent());
        assertEquals("Q4", messages.get(5).getContent());
        assertEquals("A4", messages.get(6).getContent());
    }

    @Test

        final LlmChatResponse response = new LlmChatResponse();
        response.setContent("Test content");
        assertEquals("Test content", response.getContent());

        response.setContent("Updated content");
        assertEquals("Updated content", response.getContent());
    }

    @Test
    public void test_setFinishReason() {
        final LlmChatResponse response = new LlmChatResponse();

        assertEquals("User 2", messages.get(0).getContent());
        assertEquals(ChatMessage.ROLE_ASSISTANT, messages.get(1).getRole());
        assertEquals("Assistant 2", messages.get(1).getContent());
        assertEquals(ChatMessage.ROLE_USER, messages.get(2).getRole());
        assertEquals("User 3", messages.get(2).getContent());
        assertEquals(ChatMessage.ROLE_ASSISTANT, messages.get(3).getRole());

        assertEquals("Hello", message.getContent());
        assertNotNull(message.getTimestamp());
        assertNotNull(message.getSources());
    }

    @Test
    public void test_userMessage() {
        final ChatMessage message = ChatMessage.userMessage("Hello, World!");
        assertEquals(ChatMessage.ROLE_USER, message.getRole());
        assertEquals("Hello, World!", message.getContent());
        assertTrue(message.isUser());

        assertEquals("", documentHelper.getContent(null, responseData, "", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, " ", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, "  ", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, "\t", dataMap));

        assertNull(message.getRole());
        assertNull(message.getContent());
    }

    @Test
    public void test_constructorWithRoleAndContent() {
        final LlmMessage message = new LlmMessage("system", "You are a helpful assistant.");
        assertEquals("system", message.getRole());
        assertEquals("You are a helpful assistant.", message.getContent());
    }

    @Test
    public void test_systemFactory() {