code: def test_trial_processed_after_node_failure(
      start_connected_emptyhead_cluster, storage
  ):
      """Tests that Tune processes a trial as failed if its node died."""
      cluster = start_connected_emptyhead_cluster
      node = cluster.add_node(num_cpus=1)
      cluster.wait_for_nodes()
  
      runner = TuneController(
          search_alg=BasicVariantGenerator(), storage=storage
      )
      mock_process_failure = MagicMock(
          side_effect=runner._process_trial_failure
      )
      runner._process_trial_failure = mock_process_failure
      # Disable recursion in magic mock when saving experiment state
      runner.save_to_dir = lambda *args, **kwargs: None
  
      runner.add_trial(Trial("__fake", storage=storage))
      trial = runner.get_trials()[0]
  
      while trial.status != Trial.RUNNING:
          runner.step()
  
      assert not mock_process_failure.called
  
      cluster.remove_node(node)
      while not mock_process_failure.called:
          runner.step()
      assert mock_process_failure.called
  
imports: import time
  import os
  import pytest
  import sys
  from unittest.mock import MagicMock
  import ray
  from ray import tune
  from ray.train import CheckpointConfig
  from ray.cluster_utils import Cluster
  from ray.train._internal.storage import StorageContext
  from ray.tune.error import TuneError
  from ray.tune.search import BasicVariantGenerator
  from ray.tune.experiment import Trial
  from ray.tune.execution.tune_controller import TuneController
label_desc: Use image node_id 8 for calling a global function with example usage: test_trial_processed_after_node_failure(start_connected_emptyhead_cluster, storage) without return types