code: def testGetRun(self, mock_check_output):
      # Create a pipeline in dags folder.
      handler_pipeline_path = os.path.join(
          os.environ["AIRFLOW_HOME"],
          "dags",
          self.pipeline_args[labels.PIPELINE_NAME],
      )
      fileio.makedirs(handler_pipeline_path)
  
      # Now run the pipeline
      flags_dict = {
          labels.ENGINE_FLAG: self.engine,
          labels.RUN_ID: self.run_id,
          labels.PIPELINE_NAME: self.pipeline_name,
      }
      handler = airflow_handler.AirflowHandler(flags_dict)
      with self.captureWritesToStream(sys.stdout) as captured:
          handler.get_run()
      self.assertIn(self.run_id, captured.contents())
      self.assertIn("running", captured.contents())
  
imports: import json
  import os
  import subprocess
  import sys
  from unittest import mock
  import click
  import tensorflow
  from tfx.dsl.components.base import base_driver
  from tfx.dsl.io import fileio
  from tfx.tools.cli import labels
  from tfx.tools.cli.handler import airflow_handler
  from tfx.utils import io_utils
  from tfx.utils import test_case_utils
label_desc: Use image node_id 20 for calling the AirflowHandlerTest obj's underlying member method code with example usage: obj.testGetRun(mock_check_output) without return types