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,
      )
  
      # Mock metadata and create driver.
      self._mock_metadata = tf.compat.v1.test.mock.Mock()
      self._file_based_driver = driver.FileBasedDriver(
          self._mock_metadata
      )
  
imports: import os
  import tensorflow
  from tfx.components.example_gen import driver
  from tfx.components.example_gen import utils
  from tfx.dsl.components.base import base_driver
  from tfx.dsl.io import fileio
  from tfx.orchestration import data_types
  from tfx.orchestration.portable import data_types
  from tfx.proto import example_gen_pb2
  from tfx.proto import range_config_pb2
  from tfx.types import artifact
  from tfx.types import artifact_utils
  from tfx.types import channel_utils
  from tfx.types import standard_artifacts
  from tfx.types import standard_component_specs
  from tfx.utils import io_utils
  from tfx.utils import proto_utils
label_desc: Use image node_id 1 for calling the DriverTest obj's underlying member method code with example usage: obj.setUp() without return types