vllm/tests/tokenization/test_cached_tokenizer.py

45 lines
1.7 KiB
Python

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
import pickle
from copy import deepcopy
import pytest
from transformers import AutoTokenizer
from vllm.transformers_utils.tokenizer import (AnyTokenizer,
get_cached_tokenizer)
@pytest.mark.parametrize("model_id", ["gpt2", "THUDM/chatglm3-6b"])
def test_cached_tokenizer(model_id: str):
reference_tokenizer = AutoTokenizer.from_pretrained(model_id,
trust_remote_code=True)
reference_tokenizer.add_special_tokens({"cls_token": "<CLS>"})
reference_tokenizer.add_special_tokens(
{"additional_special_tokens": ["<SEP>"]})
cached_tokenizer = get_cached_tokenizer(deepcopy(reference_tokenizer))
_check_consistency(cached_tokenizer, reference_tokenizer)
pickled_tokenizer = pickle.dumps(cached_tokenizer)
unpickled_tokenizer = pickle.loads(pickled_tokenizer)
_check_consistency(unpickled_tokenizer, reference_tokenizer)
def _check_consistency(target: AnyTokenizer, expected: AnyTokenizer):
assert isinstance(target, type(expected))
# Cached attributes
assert target.all_special_ids == expected.all_special_ids
assert target.all_special_tokens == expected.all_special_tokens
assert (target.all_special_tokens_extended ==
expected.all_special_tokens_extended)
assert target.get_vocab() == expected.get_vocab()
assert len(target) == len(expected)
# Other attributes
assert getattr(target, "padding_side",
None) == getattr(expected, "padding_side", None)
assert target.encode("prompt") == expected.encode("prompt")