code: def test_encodable_when_not_in_alphabet(self):
      corpus = "the quick brown fox jumps over the lazy dog"
      token_counts = collections.Counter(corpus.split(" "))
  
      encoder = text_encoder.SubwordTextEncoder.build_to_target_size(
          100, token_counts, 2, 10
      )
      original = "This has UPPER CASE letters that are out of alphabet"
  
      # Early versions could have an infinite loop when breaking into subtokens
      # if there was any out-of-alphabet characters in the encoded string.
      encoded = encoder.encode(original)
      decoded = encoder.decode(encoded)
  
      self.assertEqual(original, decoded)
      encoded_str = "".join(
          encoder.all_subtoken_strings[i] for i in encoded
      )
      self.assertIn("\\84;", encoded_str)
  
imports: import collections
  import io
  import os
  import random
  import shutil
  import string
  import mock
  from six.moves import range
  import tensorflow.compat.v1
  from trax.data import text_encoder
label_desc: Use image node_id 7 for calling the SubwordTextEncoderTest obj's underlying member method code with example usage: obj.test_encodable_when_not_in_alphabet() without return types