code: def test_get_conn_returns_a_boto3_connection(self):
      hook = GlueCatalogHook(region_name="us-east-1")
      assert hook.get_conn() is not None
  
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 2 for calling the TestGlueCatalogHook obj's underlying member method code with example usage: obj.test_get_conn_returns_a_boto3_connection() without return types