code: def test_delete_task(self, mock_get_conn):
      # ### Configure mock:
      mock_get_conn.return_value = self.client
      # ### Begin tests:
  
      task_arn = self.task_arn
  
      tasks = self.client.list_tasks()
      assert len(tasks["Tasks"]) == 1
  
      self.hook.delete_task(task_arn)
  
      tasks = self.client.list_tasks()
      assert len(tasks["Tasks"]) == 0
  
imports: from __future__ import annotations
  from unittest import mock
  import boto3
  import pytest
  from moto import mock_datasync
  from airflow.exceptions import AirflowException, AirflowTaskTimeout
  from airflow.providers.amazon.aws.hooks.datasync import DataSyncHook
label_desc: Use image node_id 10 for calling the TestDataSyncHookMocked obj's underlying member method code with example usage: obj.test_delete_task(mock_get_conn) without return types