code: def testConstruct(self):
      slack_component = component.SlackComponent(
          model=self._model_export,
          model_blessing=self._model_blessing,
          slack_token="token",
          slack_channel_id="slack_channel_id",
          timeout_sec=3600,
      )
      self.assertEqual(
          standard_artifacts.ModelBlessing.TYPE_NAME,
          slack_component.outputs["slack_blessing"].type_name,
      )
  
file_path: tfx/tfx/examples/custom_components/slack/slack_component/component_test.py
imports: import tensorflow
  from tfx.examples.custom_components.slack.slack_component import component
  from tfx.types import channel_utils
  from tfx.types import standard_artifacts
label_desc: Use image node_id 2 for calling the ComponentTest obj's underlying member method code with example usage: obj.testConstruct() without return types