code: def test_gke_cluster_client_creation(
      self, mock_client, mock_get_creds
  ):
      result = self.gke_hook.get_conn()
      mock_client.assert_called_once_with(
          credentials=mock_get_creds.return_value,
          client_info=CLIENT_INFO,
      )
      assert mock_client.return_value == result
      assert self.gke_hook._client == result
  
imports: from __future__ import annotations
  from asyncio import Future
  from unittest import mock
  import kubernetes.client
  import pytest
  from google.cloud.container_v1 import ClusterManagerAsyncClient
  from google.cloud.container_v1.types import Cluster
  from airflow.exceptions import AirflowException
  from airflow.providers.google.cloud.hooks.kubernetes_engine import GKEAsyncHook, GKEHook, GKEPodAsyncHook, GKEPodHook
  from airflow.providers.google.common.consts import CLIENT_INFO
  from tests.providers.google.cloud.utils.base_gcp_mock import mock_base_gcp_hook_default_project_id
label_desc: Use image node_id 3 for calling the TestGKEHookClient obj's underlying member method code with example usage: obj.test_gke_cluster_client_creation(mock_client, mock_get_creds) without return types