spaCy/spacy/tests/pipeline/test_lemmatizer.py
2020-09-03 17:31:14 +02:00

109 lines
3.3 KiB
Python

import pytest
from spacy import util, registry
from spacy.lang.en import English
from spacy.lookups import Lookups
from ..util import make_tempdir
@pytest.fixture
def nlp():
return English()
@pytest.fixture
def lemmatizer(nlp):
@registry.misc("cope_lookups")
def cope_lookups():
lookups = Lookups()
lookups.add_table("lemma_lookup", {"cope": "cope"})
lookups.add_table("lemma_index", {"verb": ("cope", "cop")})
lookups.add_table("lemma_exc", {"verb": {"coping": ("cope",)}})
lookups.add_table("lemma_rules", {"verb": [["ing", ""]]})
return lookups
lemmatizer = nlp.add_pipe(
"lemmatizer", config={"mode": "rule", "lookups": {"@misc": "cope_lookups"}}
)
return lemmatizer
def test_lemmatizer_init(nlp):
@registry.misc("cope_lookups")
def cope_lookups():
lookups = Lookups()
lookups.add_table("lemma_lookup", {"cope": "cope"})
lookups.add_table("lemma_index", {"verb": ("cope", "cop")})
lookups.add_table("lemma_exc", {"verb": {"coping": ("cope",)}})
lookups.add_table("lemma_rules", {"verb": [["ing", ""]]})
return lookups
lemmatizer = nlp.add_pipe(
"lemmatizer", config={"mode": "lookup", "lookups": {"@misc": "cope_lookups"}}
)
assert isinstance(lemmatizer.lookups, Lookups)
assert lemmatizer.mode == "lookup"
# replace any tables from spacy-lookups-data
lemmatizer.lookups = Lookups()
doc = nlp("coping")
# lookup with no tables sets text as lemma
assert doc[0].lemma_ == "coping"
nlp.remove_pipe("lemmatizer")
@registry.misc("empty_lookups")
def empty_lookups():
return Lookups()
with pytest.raises(ValueError):
nlp.add_pipe(
"lemmatizer",
config={"mode": "lookup", "lookups": {"@misc": "empty_lookups"}},
)
def test_lemmatizer_config(nlp, lemmatizer):
doc = nlp.make_doc("coping")
doc[0].pos_ = "VERB"
assert doc[0].lemma_ == ""
doc = lemmatizer(doc)
assert doc[0].text == "coping"
assert doc[0].lemma_ == "cope"
doc = nlp.make_doc("coping")
doc[0].pos_ = "VERB"
assert doc[0].lemma_ == ""
doc = lemmatizer(doc)
assert doc[0].text == "coping"
assert doc[0].lemma_ == "cope"
def test_lemmatizer_serialize(nlp, lemmatizer):
@registry.misc("cope_lookups")
def cope_lookups():
lookups = Lookups()
lookups.add_table("lemma_lookup", {"cope": "cope"})
lookups.add_table("lemma_index", {"verb": ("cope", "cop")})
lookups.add_table("lemma_exc", {"verb": {"coping": ("cope",)}})
lookups.add_table("lemma_rules", {"verb": [["ing", ""]]})
return lookups
nlp2 = English()
lemmatizer2 = nlp2.add_pipe(
"lemmatizer", config={"mode": "rule", "lookups": {"@misc": "cope_lookups"}}
)
lemmatizer2.from_bytes(lemmatizer.to_bytes())
assert lemmatizer.to_bytes() == lemmatizer2.to_bytes()
assert lemmatizer.lookups.tables == lemmatizer2.lookups.tables
# Also test the results are still the same after IO
with make_tempdir() as tmp_dir:
nlp.to_disk(tmp_dir)
nlp2 = util.load_model_from_path(tmp_dir)
doc2 = nlp2.make_doc("coping")
doc2[0].pos_ = "VERB"
assert doc2[0].lemma_ == ""
doc2 = lemmatizer(doc2)
assert doc2[0].text == "coping"
assert doc2[0].lemma_ == "cope"