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71 lines
2.9 KiB
Python
71 lines
2.9 KiB
Python
# Copyright 2018 Salesforce and HuggingFace Inc. team.
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import unittest
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from functools import lru_cache
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from transformers.models.bertweet.tokenization_bertweet import VOCAB_FILES_NAMES, BertweetTokenizer
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from ...test_tokenization_common import TokenizerTesterMixin, use_cache_if_possible
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class BertweetTokenizationTest(TokenizerTesterMixin, unittest.TestCase):
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from_pretrained_id = "vinai/bertweet-base"
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tokenizer_class = BertweetTokenizer
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test_rust_tokenizer = False
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@classmethod
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def setUpClass(cls):
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super().setUpClass()
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# Adapted from Sennrich et al. 2015 and https://github.com/rsennrich/subword-nmt
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vocab = ["I", "m", "V@@", "R@@", "r", "e@@"]
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vocab_tokens = dict(zip(vocab, range(len(vocab))))
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merges = ["#version: 0.2", "a m</w>"]
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cls.special_tokens_map = {"unk_token": "<unk>"}
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cls.vocab_file = os.path.join(cls.tmpdirname, VOCAB_FILES_NAMES["vocab_file"])
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cls.merges_file = os.path.join(cls.tmpdirname, VOCAB_FILES_NAMES["merges_file"])
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with open(cls.vocab_file, "w", encoding="utf-8") as fp:
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for token in vocab_tokens:
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fp.write(f"{token} {vocab_tokens[token]}\n")
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with open(cls.merges_file, "w", encoding="utf-8") as fp:
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fp.write("\n".join(merges))
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@classmethod
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@use_cache_if_possible
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@lru_cache(maxsize=64)
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def get_tokenizer(cls, pretrained_name=None, **kwargs):
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kwargs.update(cls.special_tokens_map)
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pretrained_name = pretrained_name or cls.tmpdirname
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return BertweetTokenizer.from_pretrained(pretrained_name, **kwargs)
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def get_input_output_texts(self, tokenizer):
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input_text = "I am VinAI Research"
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output_text = "I <unk> m V<unk> <unk> <unk> I Re<unk> e<unk> <unk> <unk> <unk>"
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return input_text, output_text
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def test_full_tokenizer(self):
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tokenizer = BertweetTokenizer(self.vocab_file, self.merges_file, **self.special_tokens_map)
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text = "I am VinAI Research"
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bpe_tokens = "I a@@ m V@@ i@@ n@@ A@@ I R@@ e@@ s@@ e@@ a@@ r@@ c@@ h".split()
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tokens = tokenizer.tokenize(text)
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self.assertListEqual(tokens, bpe_tokens)
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input_tokens = tokens + [tokenizer.unk_token]
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input_bpe_tokens = [4, 3, 5, 6, 3, 3, 3, 4, 7, 9, 3, 9, 3, 3, 3, 3, 3]
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self.assertListEqual(tokenizer.convert_tokens_to_ids(input_tokens), input_bpe_tokens)
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