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# 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 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
@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",
"",
"",
"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 = "アップルストア"
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アップルストアでiPhone\n 発売された 。 "),
["アップルストア", "", "iPhone", "8", "", "発売", "", "", "", ""],
)
def test_mecab_tokenizer_unidic_lite(self):
try:
tokenizer = MecabTokenizer(mecab_dic="unidic_lite")
except ModuleNotFoundError:
return
self.assertListEqual(
tokenizer.tokenize(" \tアップルストアでiPhone\n 発売された 。 "),
["アップル", "ストア", "", "iPhone", "8", "", "発売", "", "", "", ""],
)
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アップルストアでiPhone\n 発売された 。 "),
["アップル", "ストア", "", "iPhone", "8", "", "発売", "", "", "", ""],
)
def test_mecab_tokenizer_lower(self):
tokenizer = MecabTokenizer(do_lower_case=True, mecab_dic="ipadic")
self.assertListEqual(
tokenizer.tokenize(" \tアップルストアでiPhone\n 発売された 。 "),
["アップルストア", "", "iphone", "8", "", "発売", "", "", "", ""],
)
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アップルストアでiPhone\n 発売された 。 "),
["アップルストア", "", "iPhone", "", "", "発売", "", "れた", "\u3000", ""],
)
def test_mecab_tokenizer_no_normalize(self):
tokenizer = MecabTokenizer(normalize_text=False, mecab_dic="ipadic")
self.assertListEqual(
tokenizer.tokenize(" \tアップルストアでiPhone\n 発売された 。 "),
["アップルストア", "", "iPhone", "", "", "発売", "", "", "", " ", ""],
)
@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アップルストアでiPhone\n 発売された 。 "),
[" ", "\t", "アップル", "ストア", "", "iPhone", "8", " ", "", " ", " ", "\n ", "発売", "", "", "", " ", "", " ", " "],
)
# 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", "", "参政", ""])
@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", "", "", "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", "", "", "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アップルストアでiPhone\n 発売された 。 "),[" ", "\t", "アップル", "ストア", "", "iphone", "8", " ", "", " ", " ", "\n ", "発売", "", "", "", " ", "", " ", " "]) # 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アップルストアでiPhone\n 発売された 。 "),[" ", "\t", "アップル", "ストア", "", "iPhone", "", " ", "", " ", " ", "\n ", "発売", "", "", "", "\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アップルストアでiPhone\n 発売された 。 "),
["アップル", "ストア", "", "iPhone", "8", "", "発売", "", "", "", ""],
)
@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アップルストアでiPhone\n 発売された 。 "),["アップル", "ストア", "", "iPhone", "8", "\u3000", "", "\u3000", "\u3000", "\u3000", "発売", "", "れた", "\u3000", ""]) # fmt: skip
@require_jumanpp
def test_jumanpp_tokenizer_lower(self):
tokenizer = JumanppTokenizer(do_lower_case=True)
self.assertListEqual(tokenizer.tokenize(" \tアップルストアでiPhone\n 発売された 。 "),["アップル", "ストア", "", "iphone", "8", "\u3000", "", "\u3000", "\u3000", "\u3000", "発売", "", "れた", "\u3000", ""],) # fmt: skip
@require_jumanpp
def test_jumanpp_tokenizer_no_normalize(self):
tokenizer = JumanppTokenizer(normalize_text=False)
self.assertListEqual(tokenizer.tokenize(" \tアップルストアでiPhone\n 発売された 。 "),["", "", "", "", "", "ストア", "", "iPhone", "", "\u3000", "", "\u3000", "\u3000", "\u3000", "発売", "", "れた", "\u3000", ""],) # fmt: skip
@require_jumanpp
def test_jumanpp_tokenizer_trim_whitespace(self):
tokenizer = JumanppTokenizer(trim_whitespace=True)
self.assertListEqual(
tokenizer.tokenize(" \tアップルストアでiPhone\n 発売された 。 "),
["アップル", "ストア", "", "iPhone", "8", "", "発売", "", "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", "", "", "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", "", "▁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", "", "▁こん", "ばん", "▁に", "", "▁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]", "", "", "", "", "", "", "", "", "", ""]
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
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, ["", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]) # 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]", "", "", "", "", "", "", "", "", "", ""]
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"), ["", "", "", "", ""])
self.assertListEqual(tokenizer.tokenize("こんにちほ"), ["", "", "", "", "[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."
)
)