.statusCode(200)
                .body("record_count", greaterThanOrEqualTo(0))
                .body("data", notNullValue());
    }

    @Test
    public void testPopularWords_responseStructure() {
        String response = given().contentType("application/json").when().get("/api/v1/popular-words").asString();

        JsonPath jsonPath = JsonPath.from(response);