docstr: Test cases that should not generate image statistics.
docstr_tok: ["Test","cases","that","should","not","generate","image","statistics","."]
code: def test_cases_with_no_image_stats(self, batches):
      """Test cases that should not generate image statistics."""
      image_decoder = FakeImageDecoder()
      generator = image_stats_generator.ImageStatsGenerator(
          image_decoder=image_decoder,
          values_threshold=1,
          enable_size_stats=True,
      )
      self.assertCombinerOutputEqual(
          batches, generator, statistics_pb2.FeatureNameStatistics()
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import json
  import os
  import pickle
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  import pyarrow
  import tensorflow
  from tensorflow_data_validation.statistics.generators import image_stats_generator
  from tensorflow_data_validation.utils import test_util
  from google.protobuf import text_format
  from tensorflow_metadata.proto.v0 import statistics_pb2
label_desc: Use image node_id 1 for calling the ImageStatsGeneratorTest obj's underlying member method code with example usage: obj.test_cases_with_no_image_stats(batches) without return types