code: def test_del(self, experiment):
      logger = self.logger
  
      for trial in self.trials:
          logger.log_trial_start(trial)
  
      end = experiment.return_value.end
      end.assert_not_called()
  
      logger.__del__()
  
      self.assertEqual(len(end.call_args_list), len(self.trials))
  
imports: import unittest
  from unittest.mock import patch
  from ray.air.integrations.comet import CometLoggerCallback
  from collections import namedtuple
label_desc: Use image node_id 5 for calling the LogTrialEndTests obj's underlying member method code with example usage: obj.test_del(experiment) without return types