code: def test_batch_data(self):
      dataset = ((i, i + 1) for i in range(10))
      batches = data.batch(dataset, 10)
      batch = next(batches)
      self.assertLen(batch, 2)
      self.assertEqual(batch[0].shape, (10,))
  
imports: import itertools
  import os
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  from trax import data
label_desc: Use image node_id 4 for calling the InputsTest obj's underlying member method code with example usage: obj.test_batch_data() without return types