class_docstr: Base class for testing TFRecord-based features.
code: def setUp(self):
      super(FeaturesTestBase, self).setUp()
      self._num_files = 2
      self._num_records = 7
      self._filenames = self._createFiles()
  
imports: import os
  from tensorflow.core.example import example_pb2
  from tensorflow.core.example import feature_pb2
  from tensorflow.python.data.experimental.ops import readers
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import readers
  from tensorflow.python.framework import dtypes
  from tensorflow.python.lib.io import python_io
  from tensorflow.python.ops import parsing_ops
  from tensorflow.python.util import compat
label_desc: Use image node_id 1 for calling the FeaturesTestBase obj's underlying member method code with example usage: obj.setUp() without return types