code: def test_transform_batch_length_changed(self):
      dataset = dummy_dataset.DummyDataset()
  
      def transform_batch(a, b, c):
          if self.mode is tuple:
              return (a + [0],)
          elif self.mode is dict:
              return {"a": a + [0]}
          elif self.mode is None:
              return a + [0]
  
      view = dataset.transform_batch(("a",), transform_batch)
      with self.assertRaises(ValueError):
          view.get_examples(None, None)
  
file_path: chainer/tests/chainer_tests/dataset_tests/tabular_tests/test_transform.py
imports: import unittest
  import numpy
  import six
  import chainer
  from chainer import testing
  from chainer_tests.dataset_tests.tabular_tests import dummy_dataset
label_desc: Use image node_id 5 for calling the TestTransformInvalid obj's underlying member method code with example usage: obj.test_transform_batch_length_changed() and returns: unknown, dict, unknown