docstr: Test comparator
docstr_tok: ["Test","comparator"]
code: def test_comparator(self, tmp_path):
      """Test comparator"""
  
      def comparator(a, b):
          a = a.lower()
          b = b.lower()
  
          if a < b:
              # a sorts before b
              return -1
  
          if a > b:
              # a sorts after b
              return 1
  
          # a and b are equal
          return 0
  
      hook = LevelDBHook(leveldb_conn_id="leveldb_default")
      hook.get_conn(
          name=tmp_path.as_posix(),
          create_if_missing=True,
          comparator=comparator,
          comparator_name=b"CaseInsensitiveComparator",
      )
      assert (
          hook.db is not None
      ), "Check existence of DB object(with comparator) in connection creation"
      hook.close_conn()
  
file_path: airflow/tests/providers/google/leveldb/hooks/test_leveldb.py
imports: from __future__ import annotations
  from unittest import mock
  import pytest
  from airflow.exceptions import AirflowOptionalProviderFeatureException
label_desc: Use image node_id 8 for calling the TestLevelDBHook obj's underlying member method code with example usage: obj.test_comparator(tmp_path) and returns: int, unknown, int