code: def testDo_BlessedIfEventuallyNoError(self):
      # Run executor.
      infra_validator = executor.Executor(self._context)
      with mock.patch.object(
          infra_validator, "_ValidateOnce"
      ) as validate_mock:
          # Validation will raise error at first, succeeded at the following.
          # Infra validation will be tried 3 times, so 2 failures are tolerable.
          validate_mock.side_effect = [ValueError, ValueError, None]
          infra_validator.Do(
              self._input_dict, self._output_dict, self._exec_properties
          )
  
      # Check blessed.
      self.assertBlessed()
  
imports: import os
  import signal
  import threading
  from typing import Any, Dict
  from unittest import mock
  import tensorflow
  from tfx.components.infra_validator import error_types
  from tfx.components.infra_validator import executor
  from tfx.components.infra_validator import request_builder
  from tfx.components.infra_validator import serving_bins
  from tfx.dsl.io import fileio
  from tfx.proto import infra_validator_pb2
  from tfx.types import artifact_utils
  from tfx.types import standard_artifacts
  from tfx.types import standard_component_specs
  from tfx.utils import path_utils
  from tfx.utils import proto_utils
  from google.protobuf import json_format
label_desc: Use image node_id 4 for calling the ExecutorTest obj's underlying member method code with example usage: obj.testDo_BlessedIfEventuallyNoError() without return types