spaCy/spacy/tests/lang/zh/test_tokenizer.py
2020-09-26 13:13:57 +02:00

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import pytest
from spacy.lang.zh import Chinese, _get_pkuseg_trie_data
from thinc.api import ConfigValidationError
# fmt: off
TEXTS = ("作为语言而言,为世界使用人数最多的语言,目前世界有五分之一人口做为母语。",)
JIEBA_TOKENIZER_TESTS = [
(TEXTS[0],
['作为', '语言', '而言', '', '', '世界', '使用', '', '数最多',
'', '语言', '', '目前', '世界', '', '五分之一', '人口', '',
'', '母语', '']),
]
PKUSEG_TOKENIZER_TESTS = [
(TEXTS[0],
['作为', '语言', '而言', '', '', '世界', '使用', '人数', '最多',
'', '语言', '', '目前', '世界', '', '五分之一', '人口', '做为',
'母语', '']),
]
# fmt: on
@pytest.mark.parametrize("text", TEXTS)
def test_zh_tokenizer_char(zh_tokenizer_char, text):
tokens = [token.text for token in zh_tokenizer_char(text)]
assert tokens == list(text)
@pytest.mark.parametrize("text,expected_tokens", JIEBA_TOKENIZER_TESTS)
def test_zh_tokenizer_jieba(zh_tokenizer_jieba, text, expected_tokens):
tokens = [token.text for token in zh_tokenizer_jieba(text)]
assert tokens == expected_tokens
@pytest.mark.parametrize("text,expected_tokens", PKUSEG_TOKENIZER_TESTS)
def test_zh_tokenizer_pkuseg(zh_tokenizer_pkuseg, text, expected_tokens):
tokens = [token.text for token in zh_tokenizer_pkuseg(text)]
assert tokens == expected_tokens
def test_zh_tokenizer_pkuseg_user_dict(zh_tokenizer_pkuseg, zh_tokenizer_char):
user_dict = _get_pkuseg_trie_data(zh_tokenizer_pkuseg.pkuseg_seg.preprocesser.trie)
zh_tokenizer_pkuseg.pkuseg_update_user_dict(["nonsense_asdf"])
updated_user_dict = _get_pkuseg_trie_data(
zh_tokenizer_pkuseg.pkuseg_seg.preprocesser.trie
)
assert len(user_dict) == len(updated_user_dict) - 1
# reset user dict
zh_tokenizer_pkuseg.pkuseg_update_user_dict([], reset=True)
reset_user_dict = _get_pkuseg_trie_data(
zh_tokenizer_pkuseg.pkuseg_seg.preprocesser.trie
)
assert len(reset_user_dict) == 0
# warn if not relevant
with pytest.warns(UserWarning):
zh_tokenizer_char.pkuseg_update_user_dict(["nonsense_asdf"])
def test_zh_extra_spaces(zh_tokenizer_char):
# note: three spaces after "I"
tokens = zh_tokenizer_char("I like cheese.")
assert tokens[1].orth_ == " "
def test_zh_unsupported_segmenter():
config = {"nlp": {"tokenizer": {"segmenter": "unk"}}}
with pytest.raises(ConfigValidationError):
Chinese.from_config(config)
def test_zh_uninitialized_pkuseg():
config = {"nlp": {"tokenizer": {"segmenter": "char"}}}
nlp = Chinese.from_config(config)
nlp.tokenizer.segmenter = "pkuseg"
with pytest.raises(ValueError):
nlp("test")