code: def test_basic_properties(self) -> None:
      self.assertEqual(self.experiment, self.trial.experiment)
      self.assertEqual(self.trial.index, 0)
      self.assertEqual(self.trial.status, TrialStatus.CANDIDATE)
      self.assertTrue(self.trial.status.is_candidate)
      self.assertIsNotNone(self.trial.time_created)
      self.assertEqual(self.trial.arms_by_name["0_0"], self.trial.arm)
      self.assertEqual(self.trial.arms[0].signature, self.arm.signature)
      self.assertEqual(self.trial.abandoned_arms, [])
      self.assertEqual(
          self.trial.generator_run.generator_run_type,
          GeneratorRunType.MANUAL.name,
      )
  
      # Test empty arms
      with self.assertRaises(AttributeError):
          self.experiment.new_trial().arm_weights
  
      self.trial.mark_running(no_runner_required=True)
      self.assertTrue(self.trial.status.is_running)
  
      self.trial._status = TrialStatus.COMPLETED
      self.assertTrue(self.trial.status.is_completed)
      self.assertTrue(self.trial.completed_successfully)
  
imports: import itertools
  from copy import deepcopy
  from unittest import mock
  from unittest.mock import Mock, patch
  import pandas
  from ax.core.base_trial import BaseTrial, TrialStatus
  from ax.core.data import Data
  from ax.core.generator_run import GeneratorRun, GeneratorRunType
  from ax.core.runner import Runner
  from ax.exceptions.core import UserInputError
  from ax.runners.synthetic import SyntheticRunner
  from ax.utils.common.result import Ok
  from ax.utils.common.testutils import TestCase
  from ax.utils.testing.core_stubs import get_arms, get_branin_arms, get_experiment, get_objective, get_test_map_data_experiment
label_desc: Use image node_id 4 for calling the TrialTest obj's underlying member method code with example usage: obj.test_basic_properties() without return types