indexUpdater.updateDocument(doc);

        assertNull(doc.get("boost"));
        assertNotNull(doc.get("doc_id"));
    }

    // Test updateDocument with existing doc_id
    public void test_updateDocument_existingDocId() {
        final Map<String, Object> doc = new HashMap<>();
        doc.put("doc_id", "existing_id");
        doc.put("url", "http://example.com");

        indexUpdater.updateDocument(doc);