given().contentType("application/json")
                .when()
                .get("/api/v1/popular-words")
                .then()
                .statusCode(200)
                .body("record_count", greaterThanOrEqualTo(0))
                .body("data", notNullValue());
    }

    @Test
    public void testPopularWords_withSeed() {
        Map<String, String> params = new HashMap<>();

        params.put("num", "100");
        String response = checkMethodBase(new HashMap<>()).params(params).get("/api/v1/documents").asString();
        int recordCount = JsonPath.from(response).getInt("record_count");
        assertTrue(recordCount > 0);

        Map<String, String> wcParams1 = new HashMap<>();
        wcParams1.put("q", field + ":" + wcQuery1);
        wcParams1.put("num", "100");

        JsonPath jsonPath = JsonPath.from(response);
        int recordCount = jsonPath.getInt("record_count");
        assertTrue(recordCount >= 0, "Record count should be >= 0");

        if (recordCount > 0) {
            List<Map<String, Object>> labels = jsonPath.getList("data");
            assertTrue(labels != null, "Data should not be null when labels exist");

            buf.append(pageSize);
            buf.append(',');
            buf.append("\"page_number\":");
            buf.append(currentPageNumber);
            buf.append(',');
            buf.append("\"record_count\":");
            buf.append(allRecordCount);
            buf.append(',');
            buf.append("\"record_count_relation\":");
            buf.append(escapeJson(allRecordCountRelation));
            buf.append(',');

```

**Response**:
```json
{
  "response": {
    "version": 1,
    "status": 0,
    "q": "search",
    "exec_time": 0.123,
    "page_size": 10,
    "page_number": 1,
    "record_count": 234,
    "result": [
      {
        "url": "http://example.com/page1",
        "title": "Example Page",
        "content_description": "...search results...",
        "score": 1.543
      }
    ]

      type: "get",
      timeout: AJAX_TIMEOUT,
      url: contextPath + "/api/v1/favorites",
      data: {
        queryId: $queryId.val()
      }
    })
      .done(function(data) {
        if (data.record_count > 0) {
          var docIdsLookup = {};
          var i;
          for (i = 0; i < data.data.length; i++) {
            docIdsLookup["#" + data.data[i].doc_id] = true;
          }

        /**
         * The current page number of the search results.
         */
        protected int pageNumber;
        /**
         * The total number of records found.
         */
        protected long recordCount;
        /**
         * The relation of the record count (e.g., "eq" for exact, "gte" for greater than or equal to).
         */
        protected String recordCountRelation;
        /**