code: def test_remove_node_before_result(
      start_connected_emptyhead_cluster, storage
  ):
      """Tune continues when node is removed before trial returns."""
      cluster = start_connected_emptyhead_cluster
      node = cluster.add_node(num_cpus=1)
      cluster.wait_for_nodes()
  
      runner = TuneController(
          search_alg=BasicVariantGenerator(), storage=storage
      )
      kwargs = {
          "stopping_criterion": {"training_iteration": 3},
          "checkpoint_config": CheckpointConfig(checkpoint_frequency=2),
          "max_failures": 2,
          "storage": storage,
      }
      trial = Trial("__fake", **kwargs)
      runner.add_trial(trial)
  
      while trial.status != Trial.RUNNING:
          runner.step()
      running_trials = _get_running_trials(runner)
      assert len(running_trials) == 1
      assert _check_trial_running(running_trials[0])
      assert not trial.has_reported_at_least_once
      assert trial.status == Trial.RUNNING
      cluster.remove_node(node)
      cluster.add_node(num_cpus=1)
      cluster.wait_for_nodes()
      assert ray.cluster_resources()["CPU"] == 1
  
      while not trial.last_result.get("training_iteration") == 1:
          runner.step()
      assert trial.last_result.get("training_iteration") == 1
  
      # Process result: discover failure, recover, _train (from scratch)
      while trial.status != Trial.TERMINATED:
          runner.step()
  
      assert trial.last_result.get("training_iteration") > 1
  
      with pytest.raises(TuneError):
          runner.step()
  
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 9 for calling a global function with example usage: test_remove_node_before_result(start_connected_emptyhead_cluster, storage) without return types