code: def test_chief_should_wait_for_clients(tmp_path):
      timeout = oracle_client.TIMEOUT
      oracle_client.TIMEOUT = 10
  
      class MyOracle(randomsearch.RandomSearchOracle):
          @keras_tuner.synchronized
          def end_trial(self, trial):
              super().end_trial(trial)
              time.sleep(5)
  
      class MyTuner(base_tuner.BaseTuner):
          def run_trial(self, trial, *args, **kwargs):
              trial.hyperparameters.Boolean("foo")
              trial.hyperparameters.Boolean("bar")
              return np.random.rand()
  
      def _the_func():
          tuner = MyTuner(
              oracle=MyOracle(max_trials=1), directory=tmp_path
          )
          tuner.search(verbose=0)
  
      mock_distribute.mock_distribute(
          _the_func, num_workers=2, wait_for_chief=True
      )
      oracle_client.TIMEOUT = timeout
  
imports: import os
  import pickle
  import time
  import numpy
  import pytest
  from sklearn import linear_model
  import keras_tuner
  from keras_tuner import errors
  from keras_tuner.distribute import oracle_client
  from keras_tuner.engine import base_tuner
  from keras_tuner.test_utils import mock_distribute
  from keras_tuner.tuners import gridsearch
  from keras_tuner.tuners import randomsearch
label_desc: Use image node_id 10 for calling a global function with example usage: test_chief_should_wait_for_clients(tmp_path) and returns: np