code: # coding=utf-8
  # Copyright 2018 The Google AI Language Team Authors.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  import os
  import tempfile
  
  import tokenization
  import tensorflow as tf
  
  
  class TokenizationTest(tf.test.TestCase):
  
    def test_full_tokenizer(self):
      vocab_tokens = [
          "[UNK]", "[CLS]", "[SEP]", "want", "##want", "##ed", "wa", "un", "runn",
          "##ing", ","
      ]
      with tempfile.NamedTemporaryFile(delete=False) as vocab_writer:
        vocab_writer.write("".join([x + "\n" for x in vocab_tokens]))
  
        vocab_file = vocab_writer.name
  
      tokenizer = tokenization.FullTokenizer(vocab_file)
      os.unlink(vocab_file)
  
      tokens = tokenizer.tokenize(u"UNwant\u00E9d,running")
      self.assertAllEqual(tokens, ["un", "##want", "##ed", ",", "runn", "##ing"])
  
      self.assertAllEqual(
          tokenizer.convert_tokens_to_ids(tokens), [7, 4, 5, 10, 8, 9])
  
    def test_chinese(self):
      tokenizer = tokenization.BasicTokenizer()
  
      self.assertAllEqual(
          tokenizer.tokenize(u"ah\u535A\u63A8zz"),
          [u"ah", u"\u535A", u"\u63A8", u"zz"])
  
    def test_basic_tokenizer_lower(self):
      tokenizer = tokenization.BasicTokenizer(do_lower_case=True)
  
      self.assertAllEqual(
          tokenizer.tokenize(u" \tHeLLo!how  \n Are yoU?  "),
          ["hello", "!", "how", "are", "you", "?"])
      self.assertAllEqual(tokenizer.tokenize(u"H\u00E9llo"), ["hello"])
  
    def test_basic_tokenizer_no_lower(self):
      tokenizer = tokenization.BasicTokenizer(do_lower_case=False)
  
      self.assertAllEqual(
          tokenizer.tokenize(u" \tHeLLo!how  \n Are yoU?  "),
          ["HeLLo", "!", "how", "Are", "yoU", "?"])
  
    def test_wordpiece_tokenizer(self):
      vocab_tokens = [
          "[UNK]", "[CLS]", "[SEP]", "want", "##want", "##ed", "wa", "un", "runn",
          "##ing"
      ]
  
      vocab = {}
      for (i, token) in enumerate(vocab_tokens):
        vocab[token] = i
      tokenizer = tokenization.WordpieceTokenizer(vocab=vocab)
  
      self.assertAllEqual(tokenizer.tokenize(""), [])
  
      self.assertAllEqual(
          tokenizer.tokenize("unwanted running"),
          ["un", "##want", "##ed", "runn", "##ing"])
  
      self.assertAllEqual(
          tokenizer.tokenize("unwantedX running"), ["[UNK]", "runn", "##ing"])
  
    def test_convert_tokens_to_ids(self):
      vocab_tokens = [
          "[UNK]", "[CLS]", "[SEP]", "want", "##want", "##ed", "wa", "un", "runn",
          "##ing"
      ]
  
      vocab = {}
      for (i, token) in enumerate(vocab_tokens):
        vocab[token] = i
  
      self.assertAllEqual(
          tokenization.convert_tokens_to_ids(
              vocab, ["un", "##want", "##ed", "runn", "##ing"]), [7, 4, 5, 8, 9])
  
    def test_is_whitespace(self):
      self.assertTrue(tokenization._is_whitespace(u" "))
      self.assertTrue(tokenization._is_whitespace(u"\t"))
      self.assertTrue(tokenization._is_whitespace(u"\r"))
      self.assertTrue(tokenization._is_whitespace(u"\n"))
      self.assertTrue(tokenization._is_whitespace(u"\u00A0"))
  
      self.assertFalse(tokenization._is_whitespace(u"A"))
      self.assertFalse(tokenization._is_whitespace(u"-"))
  
    def test_is_control(self):
      self.assertTrue(tokenization._is_control(u"\u0005"))
  
      self.assertFalse(tokenization._is_control(u"A"))
      self.assertFalse(tokenization._is_control(u" "))
      self.assertFalse(tokenization._is_control(u"\t"))
      self.assertFalse(tokenization._is_control(u"\r"))
  
    def test_is_punctuation(self):
      self.assertTrue(tokenization._is_punctuation(u"-"))
      self.assertTrue(tokenization._is_punctuation(u"$"))
      self.assertTrue(tokenization._is_punctuation(u"`"))
      self.assertTrue(tokenization._is_punctuation(u"."))
  
      self.assertFalse(tokenization._is_punctuation(u"A"))
      self.assertFalse(tokenization._is_punctuation(u" "))
  
  
  if __name__ == "__main__":
    tf.test.main()
  
apis: tensorflow.test.main