code: def test_pad_incr(self):
      self.assertEqual([4, 3, 2], text_encoder.pad_incr([3, 2, 1]))
      self.assertEqual(
          [4, 3, 2, 1], text_encoder.pad_incr([3, 2, 1, 0])
      )
  
imports: from __future__ import unicode_literals
  import os
  from absl.testing import parameterized
  import numpy
  from tensorflow_datasets import testing
  from tensorflow_datasets.core.deprecated.text import text_encoder
label_desc: Use image node_id 2 for calling the TextEncoderTest obj's underlying member method code with example usage: obj.test_pad_incr() without return types