code: def test_delete_study_specified(self):
      mock_delete_study = mock.MagicMock()
      self._mock_discovery.projects().locations().studies().delete = (
          mock_delete_study
      )
  
      study_name = "{}1".format(self._trial_parent)
      self._client.delete_study(study_name)
  
      mock_delete_study.assert_called_once_with(name=study_name)
  
imports: from googleapiclient import errors
  import httplib2
  import mock
  import tensorflow
  from tensorflow_cloud.tuner import vizier_client
label_desc: Use image node_id 18 for calling the VizierClientTest obj's underlying member method code with example usage: obj.test_delete_study_specified() without return types