code: def test_auto_requeue_job(call_mock):
      call_mock.return_value = 0
      trainer = Trainer(plugins=[SLURMEnvironment()])
      connector = _SignalConnector(trainer)
      connector._slurm_sigusr_handler_fn(None, None)
      call_mock.assert_called_once_with(
          ["scontrol", "requeue", "12345"]
      )
  
imports: import concurrent.futures
  import os
  import signal
  from unittest import mock
  from unittest.mock import Mock
  import pytest
  from lightning.fabric.plugins.environments import SLURMEnvironment
  from lightning.fabric.utilities.imports import _IS_WINDOWS
  from lightning.pytorch import Trainer
  from lightning.pytorch.demos.boring_classes import BoringModel
  from lightning.pytorch.trainer.connectors.signal_connector import _SignalConnector
  from lightning.pytorch.utilities.exceptions import SIGTERMException
  from tests_pytorch.helpers.runif import RunIf
label_desc: Use image node_id 4 for calling a global function with example usage: test_auto_requeue_job(call_mock) without return types