code: def test_len_noeol(self):
      # No linefeed at the end of the file.
      ds = self._dataset("ascii_noeol.txt", encoding=["ascii"])
      assert len(ds) == 3
  
imports: from __future__ import unicode_literals
  import os
  import pickle
  import unittest
  import six
  from chainer import datasets
  from chainer import testing
label_desc: Use image node_id 6 for calling the TestTextDataset obj's underlying member method code with example usage: obj.test_len_noeol() without return types