code: def test_encode(self):
      self.assertListEqual(
          ["Dude", " - ", "that", "'", "s", "so", "cool", "."],
          tokenizer.encode("Dude - that's so cool."),
      )
      self.assertListEqual(
          ["Łukasz", "est", "né", "en", "1981", "."],
          tokenizer.encode("Łukasz est né en 1981."),
      )
      self.assertListEqual(
          [" ", "Spaces", "at", "the", "ends", " "],
          tokenizer.encode(" Spaces at the ends "),
      )
      self.assertListEqual(
          ["802", ".", "11b"], tokenizer.encode("802.11b")
      )
      self.assertListEqual(
          ["two", ". \n", "lines"], tokenizer.encode("two. \nlines")
      )
  
imports: import os
  import random
  import six
  from six.moves import range
  import tensorflow.compat.v1
  from trax.data import tokenizer
label_desc: Use image node_id 1 for calling the TokenizerTest obj's underlying member method code with example usage: obj.test_encode() without return types