code: def test_io_error(self, comm_size, device_option):
      TestCase.test_counter += 1
      with self.assertRaises(IoError):
          if os.getenv("COMM_RANK") is not None:
              self.run_test_distributed(
                  self._test_io_error, device_option=device_option
              )
          else:
              with TemporaryDirectory() as tmpdir:
                  self.run_test_locally(
                      self._test_io_error,
                      comm_size=comm_size,
                      device_option=device_option,
                      tmpdir=tmpdir,
                  )
  
imports: from hypothesis import given, settings
  import hypothesis.strategies
  from multiprocessing import Process, Queue
  import numpy
  import os
  import pickle
  import tempfile
  import shutil
  from caffe2.python import core, workspace, dyndep
  import caffe2.python.hypothesis_test_util
  from gloo.python import IoError
label_desc: Use image node_id 20 for calling the TestCase obj's underlying member method code with example usage: obj.test_io_error(comm_size, device_option) without return types