# Copyright 2020 The HuggingFace Team. All rights reserved. # # 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. import os import pickle import unittest from functools import lru_cache from transformers import AutoTokenizer from transformers.models.bert.tokenization_bert import BertTokenizer from transformers.models.bert_japanese.tokenization_bert_japanese import ( VOCAB_FILES_NAMES, BertJapaneseTokenizer, CharacterTokenizer, JumanppTokenizer, MecabTokenizer, SudachiTokenizer, WordpieceTokenizer, ) from transformers.testing_utils import custom_tokenizers, require_jumanpp, require_sudachi_projection from ...test_tokenization_common import TokenizerTesterMixin, use_cache_if_possible @custom_tokenizers class BertJapaneseTokenizationTest(TokenizerTesterMixin, unittest.TestCase): from_pretrained_id = "cl-tohoku/bert-base-japanese" tokenizer_class = BertJapaneseTokenizer test_rust_tokenizer = False space_between_special_tokens = True @classmethod def setUpClass(cls): super().setUpClass() vocab_tokens = [ "[UNK]", "[CLS]", "[SEP]", "こんにちは", "こん", "にちは", "ばんは", "##こん", "##にちは", "##ばんは", "世界", "##世界", "、", "##、", "。", "##。", "アップルストア", "外国", "##人", "参政", "##権", "此れ", "は", "猫", "です", ] cls.vocab_file = os.path.join(cls.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) with open(cls.vocab_file, "w", encoding="utf-8") as vocab_writer: vocab_writer.write("".join([x + "\n" for x in vocab_tokens])) def get_input_output_texts(self, tokenizer): input_text = "こんにちは、世界。 \nこんばんは、世界。" output_text = "こんにちは 、 世界 。 こんばんは 、 世界 。" return input_text, output_text def get_clean_sequence(self, tokenizer): input_text, output_text = self.get_input_output_texts(tokenizer) ids = tokenizer.encode(output_text, add_special_tokens=False) text = tokenizer.decode(ids, clean_up_tokenization_spaces=False) return text, ids def test_pretokenized_inputs(self): pass # TODO add if relevant def test_maximum_encoding_length_pair_input(self): pass # TODO add if relevant def test_maximum_encoding_length_single_input(self): pass # TODO add if relevant def test_full_tokenizer(self): tokenizer = self.tokenizer_class(self.vocab_file) tokens = tokenizer.tokenize("こんにちは、世界。\nこんばんは、世界。") self.assertListEqual(tokens, ["こんにちは", "、", "世界", "。", "こん", "##ばんは", "、", "世界", "。"]) self.assertListEqual(tokenizer.convert_tokens_to_ids(tokens), [3, 12, 10, 14, 4, 9, 12, 10, 14]) def test_pickle_mecab_tokenizer(self): tokenizer = self.tokenizer_class(self.vocab_file, word_tokenizer_type="mecab") self.assertIsNotNone(tokenizer) text = "こんにちは、世界。\nこんばんは、世界。" tokens = tokenizer.tokenize(text) self.assertListEqual(tokens, ["こんにちは", "、", "世界", "。", "こん", "##ばんは", "、", "世界", "。"]) self.assertListEqual(tokenizer.convert_tokens_to_ids(tokens), [3, 12, 10, 14, 4, 9, 12, 10, 14]) filename = os.path.join(self.tmpdirname, "tokenizer.bin") with open(filename, "wb") as handle: pickle.dump(tokenizer, handle) with open(filename, "rb") as handle: tokenizer_new = pickle.load(handle) tokens_loaded = tokenizer_new.tokenize(text) self.assertListEqual(tokens, tokens_loaded) def test_mecab_full_tokenizer_with_mecab_kwargs(self): tokenizer = self.tokenizer_class( self.vocab_file, word_tokenizer_type="mecab", mecab_kwargs={"mecab_dic": "ipadic"} ) text = "ｱｯﾌﾟﾙストア" tokens = tokenizer.tokenize(text) self.assertListEqual(tokens, ["アップルストア"]) def test_mecab_tokenizer_ipadic(self): tokenizer = MecabTokenizer(mecab_dic="ipadic") self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["アップルストア", "で", "iPhone", "8", "が", "発売", "さ", "れ", "た", "。"], ) def test_mecab_tokenizer_unidic_lite(self): try: tokenizer = MecabTokenizer(mecab_dic="unidic_lite") except ModuleNotFoundError: return self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["アップル", "ストア", "で", "iPhone", "8", "が", "発売", "さ", "れ", "た", "。"], ) def test_mecab_tokenizer_unidic(self): try: import unidic self.assertTrue( os.path.isdir(unidic.DICDIR), "The content of unidic was not downloaded. Run `python -m unidic download` before running this test case. Note that this requires 2.1GB on disk.", ) tokenizer = MecabTokenizer(mecab_dic="unidic") except ModuleNotFoundError: return self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["アップル", "ストア", "で", "iPhone", "8", "が", "発売", "さ", "れ", "た", "。"], ) def test_mecab_tokenizer_lower(self): tokenizer = MecabTokenizer(do_lower_case=True, mecab_dic="ipadic") self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["アップルストア", "で", "iphone", "8", "が", "発売", "さ", "れ", "た", "。"], ) def test_mecab_tokenizer_with_option(self): try: tokenizer = MecabTokenizer( do_lower_case=True, normalize_text=False, mecab_option="-d /usr/local/lib/mecab/dic/jumandic" ) except RuntimeError: # if dict doesn't exist in the system, previous code raises this error. return self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["ｱｯﾌﾟﾙストア", "で", "iPhone", "８", "が", "発売", "さ", "れた", "\u3000", "。"], ) def test_mecab_tokenizer_no_normalize(self): tokenizer = MecabTokenizer(normalize_text=False, mecab_dic="ipadic") self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["ｱｯﾌﾟﾙストア", "で", "iPhone", "８", "が", "発売", "さ", "れ", "た", "　", "。"], ) @require_sudachi_projection def test_pickle_sudachi_tokenizer(self): tokenizer = self.tokenizer_class(self.vocab_file, word_tokenizer_type="sudachi") self.assertIsNotNone(tokenizer) text = "こんにちは、世界。\nこんばんは、世界。" tokens = tokenizer.tokenize(text) self.assertListEqual(tokens, ["こんにちは", "、", "世界", "。", "こん", "##ばんは", "、", "世界", "。"]) self.assertListEqual(tokenizer.convert_tokens_to_ids(tokens), [3, 12, 10, 14, 4, 9, 12, 10, 14]) filename = os.path.join(self.tmpdirname, "tokenizer.bin") with open(filename, "wb") as handle: pickle.dump(tokenizer, handle) with open(filename, "rb") as handle: tokenizer_new = pickle.load(handle) tokens_loaded = tokenizer_new.tokenize(text) self.assertListEqual(tokens, tokens_loaded) @require_sudachi_projection def test_sudachi_tokenizer_core(self): tokenizer = SudachiTokenizer(sudachi_dict_type="core") # fmt: off self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), [" ", "\t", "アップル", "ストア", "で", "iPhone", "8", " ", "が", " ", " ", "\n ", "発売", "さ", "れ", "た", " ", "。", " ", " "], ) # fmt: on @require_sudachi_projection def test_sudachi_tokenizer_split_mode_A(self): tokenizer = SudachiTokenizer(sudachi_dict_type="core", sudachi_split_mode="A") self.assertListEqual(tokenizer.tokenize("外国人参政権"), ["外国", "人", "参政", "権"]) @require_sudachi_projection def test_sudachi_tokenizer_split_mode_B(self): tokenizer = SudachiTokenizer(sudachi_dict_type="core", sudachi_split_mode="B") self.assertListEqual(tokenizer.tokenize("外国人参政権"), ["外国人", "参政権"]) @require_sudachi_projection def test_sudachi_tokenizer_split_mode_C(self): tokenizer = SudachiTokenizer(sudachi_dict_type="core", sudachi_split_mode="C") self.assertListEqual(tokenizer.tokenize("外国人参政権"), ["外国人参政権"]) @require_sudachi_projection def test_sudachi_full_tokenizer_with_sudachi_kwargs_split_mode_B(self): tokenizer = self.tokenizer_class( self.vocab_file, word_tokenizer_type="sudachi", sudachi_kwargs={"sudachi_split_mode": "B"} ) self.assertListEqual(tokenizer.tokenize("外国人参政権"), ["外国", "##人", "参政", "##権"]) @require_sudachi_projection def test_sudachi_tokenizer_projection(self): tokenizer = SudachiTokenizer( sudachi_dict_type="core", sudachi_split_mode="A", sudachi_projection="normalized_nouns" ) self.assertListEqual(tokenizer.tokenize("これはねこです。"), ["此れ", "は", "猫", "です", "。"]) @require_sudachi_projection def test_sudachi_full_tokenizer_with_sudachi_kwargs_sudachi_projection(self): tokenizer = self.tokenizer_class( self.vocab_file, word_tokenizer_type="sudachi", sudachi_kwargs={"sudachi_projection": "normalized_nouns"} ) self.assertListEqual(tokenizer.tokenize("これはねこです。"), ["此れ", "は", "猫", "です", "。"]) @require_sudachi_projection def test_sudachi_tokenizer_lower(self): tokenizer = SudachiTokenizer(do_lower_case=True, sudachi_dict_type="core") self.assertListEqual(tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "),[" ", "\t", "アップル", "ストア", "で", "iphone", "8", " ", "が", " ", " ", "\n ", "発売", "さ", "れ", "た", " ", "。", " ", " "]) # fmt: skip @require_sudachi_projection def test_sudachi_tokenizer_no_normalize(self): tokenizer = SudachiTokenizer(normalize_text=False, sudachi_dict_type="core") self.assertListEqual(tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "),[" ", "\t", "ｱｯﾌﾟﾙ", "ストア", "で", "iPhone", "８", " ", "が", " ", " ", "\n ", "発売", "さ", "れ", "た", "\u3000", "。", " ", " "]) # fmt: skip @require_sudachi_projection def test_sudachi_tokenizer_trim_whitespace(self): tokenizer = SudachiTokenizer(trim_whitespace=True, sudachi_dict_type="core") self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["アップル", "ストア", "で", "iPhone", "8", "が", "発売", "さ", "れ", "た", "。"], ) @require_jumanpp def test_pickle_jumanpp_tokenizer(self): tokenizer = self.tokenizer_class(self.vocab_file, word_tokenizer_type="jumanpp") self.assertIsNotNone(tokenizer) text = "こんにちは、世界。\nこんばんは、世界。" tokens = tokenizer.tokenize(text) self.assertListEqual(tokens, ["こんにちは", "、", "世界", "。", "こん", "##ばんは", "、", "世界", "。"]) self.assertListEqual(tokenizer.convert_tokens_to_ids(tokens), [3, 12, 10, 14, 4, 9, 12, 10, 14]) filename = os.path.join(self.tmpdirname, "tokenizer.bin") with open(filename, "wb") as handle: pickle.dump(tokenizer, handle) with open(filename, "rb") as handle: tokenizer_new = pickle.load(handle) tokens_loaded = tokenizer_new.tokenize(text) self.assertListEqual(tokens, tokens_loaded) @require_jumanpp def test_jumanpp_tokenizer(self): tokenizer = JumanppTokenizer() self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "),["アップル", "ストア", "で", "iPhone", "8", "\u3000", "が", "\u3000", "\u3000", "\u3000", "発売", "さ", "れた", "\u3000", "。"]) # fmt: skip @require_jumanpp def test_jumanpp_tokenizer_lower(self): tokenizer = JumanppTokenizer(do_lower_case=True) self.assertListEqual(tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "),["アップル", "ストア", "で", "iphone", "8", "\u3000", "が", "\u3000", "\u3000", "\u3000", "発売", "さ", "れた", "\u3000", "。"],) # fmt: skip @require_jumanpp def test_jumanpp_tokenizer_no_normalize(self): tokenizer = JumanppTokenizer(normalize_text=False) self.assertListEqual(tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "),["ｱ", "ｯ", "ﾌ", "ﾟ", "ﾙ", "ストア", "で", "iPhone", "８", "\u3000", "が", "\u3000", "\u3000", "\u3000", "発売", "さ", "れた", "\u3000", "。"],) # fmt: skip @require_jumanpp def test_jumanpp_tokenizer_trim_whitespace(self): tokenizer = JumanppTokenizer(trim_whitespace=True) self.assertListEqual( tokenizer.tokenize(" \tｱｯﾌﾟﾙストアでiPhone８ が \n 発売された　。 "), ["アップル", "ストア", "で", "iPhone", "8", "が", "発売", "さ", "れた", "。"], ) @require_jumanpp def test_jumanpp_full_tokenizer_with_jumanpp_kwargs_trim_whitespace(self): tokenizer = self.tokenizer_class( self.vocab_file, word_tokenizer_type="jumanpp", jumanpp_kwargs={"trim_whitespace": True} ) text = "こんにちは、世界。\nこんばんは、世界。" tokens = tokenizer.tokenize(text) self.assertListEqual(tokens, ["こんにちは", "、", "世界", "。", "こん", "##ばんは", "、", "世界", "。"]) self.assertListEqual(tokenizer.convert_tokens_to_ids(tokens), [3, 12, 10, 14, 4, 9, 12, 10, 14]) @require_jumanpp def test_jumanpp_tokenizer_ext(self): tokenizer = JumanppTokenizer() self.assertListEqual( tokenizer.tokenize("ありがとうございますm(_ _)ｍ見つけるのが大変です。"), ["ありがとう", "ございます", "m(_ _)m", "見つける", "の", "が", "大変です", "。"], ) def test_wordpiece_tokenizer(self): vocab_tokens = ["[UNK]", "[CLS]", "[SEP]", "こんにちは", "こん", "にちは", "ばんは", "##こん", "##にちは", "##ばんは"] # fmt: skip vocab = {} for i, token in enumerate(vocab_tokens): vocab[token] = i tokenizer = WordpieceTokenizer(vocab=vocab, unk_token="[UNK]") self.assertListEqual(tokenizer.tokenize(""), []) self.assertListEqual(tokenizer.tokenize("こんにちは"), ["こんにちは"]) self.assertListEqual(tokenizer.tokenize("こんばんは"), ["こん", "##ばんは"]) self.assertListEqual(tokenizer.tokenize("こんばんは こんばんにちは こんにちは"), ["こん", "##ばんは", "[UNK]", "こんにちは"]) # fmt: skip def test_sentencepiece_tokenizer(self): tokenizer = BertJapaneseTokenizer.from_pretrained("nlp-waseda/roberta-base-japanese-with-auto-jumanpp") subword_tokenizer = tokenizer.subword_tokenizer tokens = subword_tokenizer.tokenize("国境 の 長い トンネル を 抜ける と 雪国 であった 。") self.assertListEqual(tokens, ["▁国境", "▁の", "▁長い", "▁トンネル", "▁を", "▁抜ける", "▁と", "▁雪", "国", "▁であった", "▁。"]) # fmt: skip tokens = subword_tokenizer.tokenize("こんばんは こんばん にち は こんにちは") self.assertListEqual(tokens, ["▁こん", "ばん", "は", "▁こん", "ばん", "▁に", "ち", "▁は", "▁こんにちは"]) def test_sequence_builders(self): tokenizer = self.tokenizer_class.from_pretrained("cl-tohoku/bert-base-japanese") text = tokenizer.encode("ありがとう。", add_special_tokens=False) text_2 = tokenizer.encode("どういたしまして。", add_special_tokens=False) encoded_sentence = tokenizer.build_inputs_with_special_tokens(text) encoded_pair = tokenizer.build_inputs_with_special_tokens(text, text_2) # 2 is for "[CLS]", 3 is for "[SEP]" assert encoded_sentence == [2] + text + [3] assert encoded_pair == [2] + text + [3] + text_2 + [3] @custom_tokenizers class BertJapaneseCharacterTokenizationTest(TokenizerTesterMixin, unittest.TestCase): from_pretrained_id = "cl-tohoku/bert-base-japanese" tokenizer_class = BertJapaneseTokenizer test_rust_tokenizer = False @classmethod def setUpClass(cls): super().setUpClass() vocab_tokens = ["[UNK]", "[CLS]", "[SEP]", "こ", "ん", "に", "ち", "は", "ば", "世", "界", "、", "。"] cls.vocab_file = os.path.join(cls.tmpdirname, VOCAB_FILES_NAMES["vocab_file"]) with open(cls.vocab_file, "w", encoding="utf-8") as vocab_writer: vocab_writer.write("".join([x + "\n" for x in vocab_tokens])) @classmethod @use_cache_if_possible @lru_cache(maxsize=64) def get_tokenizer(cls, pretrained_name=None, **kwargs): return BertJapaneseTokenizer.from_pretrained(cls.tmpdirname, subword_tokenizer_type="character", **kwargs) def get_input_output_texts(self, tokenizer): input_text = "こんにちは、世界。 \nこんばんは、世界。" output_text = "こ ん に ち は 、 世 界 。 こ ん ば ん は 、 世 界 。" return input_text, output_text def test_pretokenized_inputs(self): pass # TODO add if relevant def test_maximum_encoding_length_pair_input(self): pass # TODO add if relevant def test_maximum_encoding_length_single_input(self): pass # TODO add if relevant def test_full_tokenizer(self): tokenizer = self.tokenizer_class(self.vocab_file, subword_tokenizer_type="character") tokens = tokenizer.tokenize("こんにちは、世界。 \nこんばんは、世界。") self.assertListEqual(tokens, ["こ", "ん", "に", "ち", "は", "、", "世", "界", "。", "こ", "ん", "ば", "ん", "は", "、", "世", "界", "。"]) # fmt: skip self.assertListEqual( tokenizer.convert_tokens_to_ids(tokens), [3, 4, 5, 6, 7, 11, 9, 10, 12, 3, 4, 8, 4, 7, 11, 9, 10, 12] ) def test_character_tokenizer(self): vocab_tokens = ["[UNK]", "[CLS]", "[SEP]", "こ", "ん", "に", "ち", "は", "ば", "世", "界", "、", "。"] vocab = {} for i, token in enumerate(vocab_tokens): vocab[token] = i tokenizer = CharacterTokenizer(vocab=vocab, unk_token="[UNK]") self.assertListEqual(tokenizer.tokenize(""), []) self.assertListEqual(tokenizer.tokenize("こんにちは"), ["こ", "ん", "に", "ち", "は"]) self.assertListEqual(tokenizer.tokenize("こんにちほ"), ["こ", "ん", "に", "ち", "[UNK]"]) def test_sequence_builders(self): tokenizer = self.tokenizer_class.from_pretrained("cl-tohoku/bert-base-japanese-char") text = tokenizer.encode("ありがとう。", add_special_tokens=False) text_2 = tokenizer.encode("どういたしまして。", add_special_tokens=False) encoded_sentence = tokenizer.build_inputs_with_special_tokens(text) encoded_pair = tokenizer.build_inputs_with_special_tokens(text, text_2) # 2 is for "[CLS]", 3 is for "[SEP]" assert encoded_sentence == [2] + text + [3] assert encoded_pair == [2] + text + [3] + text_2 + [3] @custom_tokenizers class AutoTokenizerCustomTest(unittest.TestCase): def test_tokenizer_bert_japanese(self): EXAMPLE_BERT_JAPANESE_ID = "cl-tohoku/bert-base-japanese" tokenizer = AutoTokenizer.from_pretrained(EXAMPLE_BERT_JAPANESE_ID) self.assertIsInstance(tokenizer, BertJapaneseTokenizer) class BertTokenizerMismatchTest(unittest.TestCase): def test_tokenizer_mismatch_warning(self): EXAMPLE_BERT_JAPANESE_ID = "cl-tohoku/bert-base-japanese" with self.assertLogs("transformers", level="WARNING") as cm: BertTokenizer.from_pretrained(EXAMPLE_BERT_JAPANESE_ID) self.assertTrue( cm.records[0].message.startswith( "The tokenizer class you load from this checkpoint is not the same type as the class this function" " is called from." ) ) EXAMPLE_BERT_ID = "google-bert/bert-base-cased" with self.assertLogs("transformers", level="WARNING") as cm: BertJapaneseTokenizer.from_pretrained(EXAMPLE_BERT_ID) self.assertTrue( cm.records[0].message.startswith( "The tokenizer class you load from this checkpoint is not the same type as the class this function" " is called from." ) )