code: def testCurrentBestTrial(self):
      trials = []
      for i in range(5):
          t = Mock()
          t.status = "RUNNING"
          t.trial_id = "%05d" % i
          t.local_experiment_path = "/foo"
          t.temporary_state = Mock()
          t.temporary_state.location = "here"
          t.config = {"a": i, "b": i * 2, "n": {"k": [i, 2 * i]}}
          t.evaluated_params = {"a": i}
          t.last_result = {"config": {"a": i}, "metric_1": i / 2}
          t.__str__ = lambda self: self.trial_id
          trials.append(t)
  
      class TestReporter(CLIReporter):
          _output = []
  
          def __init__(self, *args, **kwargs):
              super().__init__(*args, **kwargs)
              self._max_report_freqency = 0
  
          def report(self, *args, **kwargs):
              progress_str = self._progress_str(*args, **kwargs)
              self._output.append(progress_str)
  
      reporter = TestReporter(mode="max")
      reporter.report(trials, done=False)
      assert EXPECTED_BEST_2 in reporter._output[0]
  
imports: import collections
  import os
  import regex
  import unittest
  from unittest.mock import MagicMock, Mock, patch
  import pytest
  import numpy
  from ray import train, tune
  from ray._private.test_utils import run_string_as_driver
  from ray.tune.progress_reporter import CLIReporter, JupyterNotebookReporter, ProgressReporter, _fair_filter_trials, _best_trial_str, _detect_reporter, _time_passed_str, _trial_progress_str, TuneReporterBase, _max_len
  from ray.tune.result import AUTO_RESULT_KEYS
  from ray.tune.experiment.trial import Trial
label_desc: Use image node_id 11 for calling the ProgressReporterTest obj's underlying member method code with example usage: obj.testCurrentBestTrial() without return types