code: def setUp(self):
      super().setUp()
      self._test_dir = self.tmp_dir
  
file_path: tfx/tfx/examples/chicago_taxi_pipeline/taxi_pipeline_simple_test.py
imports: import datetime
  import os
  from airflow import models
  import tensorflow
  from tfx.orchestration.airflow.airflow_dag_runner import AirflowDagRunner
  from tfx.orchestration.airflow.airflow_dag_runner import AirflowPipelineConfig
  from tfx.utils import test_case_utils
label_desc: Use image node_id 1 for calling the TaxiPipelineSimpleTest obj's underlying member method code with example usage: obj.setUp() without return types