code: def _setup(self, stream=None, delete_flush=False):
      self.logreport = mock.MagicMock(
          spec=extensions.LogReport(
              ["epoch"], trigger=(1, "iteration"), log_name=None
          )
      )
      if stream is None:
          self.stream = mock.MagicMock()
          if delete_flush:
              del self.stream.flush
      else:
          self.stream = stream
      self.report = extensions.PrintReport(
          ["epoch"], log_report=self.logreport, out=self.stream
      )
  
      self.trainer = testing.get_trainer_with_mock_updater(
          stop_trigger=(1, "iteration")
      )
      self.trainer.extend(self.logreport)
      self.trainer.extend(self.report)
      self.logreport.log = [{"epoch": 0}]
  
file_path: chainer/tests/chainer_tests/training_tests/extensions_tests/test_print_report.py
imports: import tempfile
  import unittest
  import mock
  from chainer import testing
  from chainer.training import extensions
label_desc: Use image node_id 1 for calling the TestPrintReport obj's underlying member method code with example usage: obj._setup(stream, delete_flush) without return types