code: def test_Runner(self) -> None:
      # Verify BatchTrial without runner will fail
      with self.assertRaises(ValueError):
          self.batch.run()
  
      # Verify mark running without runner will fail
      with self.assertRaises(ValueError):
          self.batch.mark_running()
  
      self.batch.runner = SyntheticRunner()
      self.batch.run()
      self.assertEqual(self.batch.deployed_name, "test_0")
      self.assertNotEqual(len(self.batch.run_metadata.keys()), 0)
      self.assertEqual(self.batch.status, TrialStatus.RUNNING)
  
      # Verify setting runner on experiment but not BatchTrial
      # Also mock staging_required to be false
      staging_mock = PropertyMock()
      with patch.object(
          SyntheticRunner, "staging_required", staging_mock
      ):
          mock_runner = SyntheticRunner()
          staging_mock.return_value = True
  
          self.experiment.runner = mock_runner
          b2 = self.experiment.new_batch_trial()
          b2.run()
          self.assertEqual(b2.deployed_name, "test_1")
          self.assertEqual(b2.status, TrialStatus.STAGED)
  
imports: import math
  from time import sleep
  from unittest import mock
  from unittest.mock import patch, PropertyMock
  import numpy
  from ax.core.arm import Arm
  from ax.core.base_trial import TrialStatus
  from ax.core.batch_trial import BatchTrial, GeneratorRunStruct
  from ax.core.experiment import Experiment
  from ax.core.generator_run import GeneratorRun, GeneratorRunType
  from ax.core.parameter import FixedParameter, ParameterType
  from ax.core.search_space import SearchSpace
  from ax.runners.synthetic import SyntheticRunner
  from ax.utils.common.testutils import TestCase
  from ax.utils.common.typeutils import checked_cast
  from ax.utils.testing.core_stubs import get_abandoned_arm, get_arm, get_arm_weights1, get_arms, get_experiment, get_generator_run, get_generator_run2, get_weights
label_desc: Use image node_id 19 for calling the BatchTrialTest obj's underlying member method code with example usage: obj.test_Runner() without return types