code: def test_get_partitions(self, mock_get_conn):
      response = [{"Partitions": [{"Values": ["2015-01-01"]}]}]
      mock_paginator = mock.Mock()
      mock_paginator.paginate.return_value = response
      mock_conn = mock.Mock()
      mock_conn.get_paginator.return_value = mock_paginator
      mock_get_conn.return_value = mock_conn
      hook = GlueCatalogHook(region_name="us-east-1")
      result = hook.get_partitions(
          "db", "tbl", expression="foo=bar", page_size=2, max_items=3
      )
  
      assert result == {("2015-01-01",)}
      mock_conn.get_paginator.assert_called_once_with("get_partitions")
      mock_paginator.paginate.assert_called_once_with(
          DatabaseName="db",
          TableName="tbl",
          Expression="foo=bar",
          PaginationConfig={"PageSize": 2, "MaxItems": 3},
      )
  
imports: from __future__ import annotations
  from unittest import mock
  import boto3
  import pytest
  from botocore.exceptions import ClientError
  from moto import mock_glue
  from airflow.exceptions import AirflowException
  from airflow.providers.amazon.aws.hooks.glue_catalog import GlueCatalogHook
label_desc: Use image node_id 6 for calling the TestGlueCatalogHook obj's underlying member method code with example usage: obj.test_get_partitions(mock_get_conn) without return types