code: def setUp(self):
      super().setUp()
      self._test_dir = os.path.join(
          os.environ.get(
              "TEST_UNDECLARED_OUTPUTS_DIR", self.get_temp_dir()
          ),
          self._testMethodName,
      )
  
      self._pipeline_name = "tf_ranking_test"
      self._data_root = os.path.join(
          os.path.dirname(__file__), "testdata", "input"
      )
      self._tfx_root = os.path.join(self._test_dir, "tfx")
      self._module_file = os.path.join(
          os.path.dirname(__file__), "ranking_utils.py"
      )
      self._serving_model_dir = os.path.join(
          self._test_dir, "serving_model"
      )
      self._metadata_path = os.path.join(
          self._tfx_root, "metadata", self._pipeline_name, "metadata.db"
      )
      print("TFX ROOT: ", self._tfx_root)
  
file_path: tfx/tfx/examples/ranking/ranking_pipeline_e2e_test.py
imports: import os
  import unittest
  import tensorflow
  from tfx.examples.ranking import ranking_pipeline
  from tfx.orchestration import metadata
  from tfx.orchestration.beam.beam_dag_runner import BeamDagRunner
label_desc: Use image node_id 1 for calling the RankingPipelineTest obj's underlying member method code with example usage: obj.setUp() without return types