code: def test_uuid_serializer():
      s = UUIDSerializer()
      id_ = uuid.uuid4()
      assert s.serialize(id_, 16) == id_.bytes
      assert s.deserialize(id_.bytes) == id_
      assert repr(s) == "UUIDSerializer()"
  
file_path: bplustree/tests/test_serializer.py
imports: from datetime import datetime, timezone
  from unittest import mock
  import uuid
  import pytest
  from bplustree.serializer import IntSerializer, StrSerializer, UUIDSerializer, DatetimeUTCSerializer
label_desc: Use image node_id 4 for calling a global function with example usage: test_uuid_serializer() without return types