}
        };

        long result = testManager.purge(1L);
        assertTrue(result >= 0);
    }

    // Test FilePurgeVisitor getDocId
    @Test
    public void test_FilePurgeVisitor_getDocId() throws IOException {
        // Test the getDocId logic without creating actual FilePurgeVisitor
        // The logic converts path to doc ID by removing path separators
        String pathStr = "_1/_2/docid123";

            this.url = url;
        }

        /**
         * Gets the document ID.
         *
         * @return the document ID
         */
        public String getDocId() {
            return docId;
        }

        /**
         * Sets the document ID.
         *
         * @param docId the document ID
         */
        public void setDocId(final String docId) {

         */
        protected void deleteFiles() {
            final Map<String, Path> deleteFileMap = new HashMap<>();
            for (final Path path : deletedFileList) {
                final String docId = getDocId(path);
                if (StringUtil.isBlank(docId) || deleteFileMap.containsKey(docId)) {
                    deleteFile(path);
                } else {
                    deleteFileMap.put(docId, path);

        final ChatSource source = new ChatSource();
        assertEquals(0, source.getIndex());
        assertNull(source.getTitle());
        assertNull(source.getUrl());
        assertNull(source.getDocId());
        assertNull(source.getSnippet());
    }

    @Test
    public void test_chatSourceFromMap() {
        final Map<String, Object> doc = new HashMap<>();
        doc.put("title", "Test Title");

                    appendJson("query-id", entity.getQueryId(), buf).append(',');
                    appendJson("user-info-id", entity.getUserInfoId(), buf).append(',');
                    appendJson("doc-id", entity.getDocId(), buf).append(',');
                    appendJson("url", entity.getUrl(), buf);
                    buf.append('}');
                    buf.append('\n');
                    try {

                final Map<String, String> params = new LinkedHashMap<>();
                params.put("ID", e.getId());
                params.put("Query ID", e.getQueryId());
                params.put("Doc ID", e.getDocId());
                params.put("User Session ID", e.getUserSessionId());
                params.put("URL", e.getUrl());
                params.put("URL ID", e.getUrlId());

                        cb.query().setQueryId_Equal(clickLog.getQueryId());
                    }).ifPresent(entity -> {
                        clickLogList.add(clickLog);
                        final String docId = clickLog.getDocId();
                        Integer countObj = clickCountMap.get(docId);
                        if (countObj == null) {
                            countObj = 1;
                        } else {

        for (int i = 0; i < sourceList.size(); i++) {
            final ChatSource source = new ChatSource(i + 1, sourceList.get(i));
            source.setGoUrl(buildGoUrl(contextPath, source.getDocId(), queryId, requestedTime, i));
            assistantMessage.addSource(source);
        }
    }

    /**
     * Populates the url_link field in the document map if not already present.
     *