code: def test_trigger_sleep_when_no_task(self, mock_sleep):
      execute_mock = MagicMock()
      executor = DebugExecutor()
      executor.execute_async = execute_mock
      executor.queued_tasks = {}
      executor.trigger_tasks(open_slots=5)
      mock_sleep.assert_called()
  
file_path: airflow/tests/executors/test_debug_executor.py
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import MagicMock
  from airflow.executors.debug_executor import DebugExecutor
  from airflow.utils.state import State
label_desc: Use image node_id 10 for calling the TestDebugExecutor obj's underlying member method code with example usage: obj.test_trigger_sleep_when_no_task(mock_sleep) without return types