spaCy/spacy/tests/doc/test_span.py

153 lines
4.7 KiB
Python

# coding: utf-8
from __future__ import unicode_literals
from ..util import get_doc
from ...attrs import ORTH, LENGTH
from ...tokens import Doc
from ...vocab import Vocab
import pytest
@pytest.fixture
def doc(en_tokenizer):
text = "This is a sentence. This is another sentence. And a third."
heads = [1, 0, 1, -2, -3, 1, 0, 1, -2, -3, 0, 1, -2, -1]
deps = ['nsubj', 'ROOT', 'det', 'attr', 'punct', 'nsubj', 'ROOT', 'det',
'attr', 'punct', 'ROOT', 'det', 'npadvmod', 'punct']
tokens = en_tokenizer(text)
return get_doc(tokens.vocab, [t.text for t in tokens], heads=heads, deps=deps)
@pytest.fixture
def doc_not_parsed(en_tokenizer):
text = "This is a sentence. This is another sentence. And a third."
tokens = en_tokenizer(text)
d = get_doc(tokens.vocab, [t.text for t in tokens])
d.is_parsed = False
return d
def test_spans_sent_spans(doc):
sents = list(doc.sents)
assert sents[0].start == 0
assert sents[0].end == 5
assert len(sents) == 3
assert sum(len(sent) for sent in sents) == len(doc)
def test_spans_root(doc):
span = doc[2:4]
assert len(span) == 2
assert span.text == 'a sentence'
assert span.root.text == 'sentence'
assert span.root.head.text == 'is'
def test_spans_string_fn(doc):
span = doc[0:4]
assert len(span) == 4
assert span.text == 'This is a sentence'
assert span.upper_ == 'THIS IS A SENTENCE'
assert span.lower_ == 'this is a sentence'
def test_spans_root2(en_tokenizer):
text = "through North and South Carolina"
heads = [0, 3, -1, -2, -4]
tokens = en_tokenizer(text)
doc = get_doc(tokens.vocab, [t.text for t in tokens], heads=heads)
assert doc[-2:].root.text == 'Carolina'
def test_spans_span_sent(doc, doc_not_parsed):
"""Test span.sent property"""
assert len(list(doc.sents))
assert doc[:2].sent.root.text == 'is'
assert doc[:2].sent.text == 'This is a sentence .'
assert doc[6:7].sent.root.left_edge.text == 'This'
# test on manual sbd
doc_not_parsed[0].is_sent_start = True
doc_not_parsed[5].is_sent_start = True
assert doc_not_parsed[1:3].sent == doc_not_parsed[0:5]
assert doc_not_parsed[10:14].sent == doc_not_parsed[5:]
def test_spans_lca_matrix(en_tokenizer):
"""Test span's lca matrix generation"""
tokens = en_tokenizer('the lazy dog slept')
doc = get_doc(tokens.vocab, [t.text for t in tokens], heads=[2, 1, 1, 0])
lca = doc[:2].get_lca_matrix()
assert(lca[0, 0] == 0)
assert(lca[0, 1] == -1)
assert(lca[1, 0] == -1)
assert(lca[1, 1] == 1)
def test_span_similarity_match():
doc = Doc(Vocab(), words=['a', 'b', 'a', 'b'])
span1 = doc[:2]
span2 = doc[2:]
with pytest.warns(None):
assert span1.similarity(span2) == 1.0
assert span1.similarity(doc) == 0.0
assert span1[:1].similarity(doc.vocab['a']) == 1.0
def test_spans_default_sentiment(en_tokenizer):
"""Test span.sentiment property's default averaging behaviour"""
text = "good stuff bad stuff"
tokens = en_tokenizer(text)
tokens.vocab[tokens[0].text].sentiment = 3.0
tokens.vocab[tokens[2].text].sentiment = -2.0
doc = get_doc(tokens.vocab, [t.text for t in tokens])
assert doc[:2].sentiment == 3.0 / 2
assert doc[-2:].sentiment == -2. / 2
assert doc[:-1].sentiment == (3.+-2) / 3.
def test_spans_override_sentiment(en_tokenizer):
"""Test span.sentiment property's default averaging behaviour"""
text = "good stuff bad stuff"
tokens = en_tokenizer(text)
tokens.vocab[tokens[0].text].sentiment = 3.0
tokens.vocab[tokens[2].text].sentiment = -2.0
doc = get_doc(tokens.vocab, [t.text for t in tokens])
doc.user_span_hooks['sentiment'] = lambda span: 10.0
assert doc[:2].sentiment == 10.0
assert doc[-2:].sentiment == 10.0
assert doc[:-1].sentiment == 10.0
def test_spans_are_hashable(en_tokenizer):
"""Test spans can be hashed."""
text = "good stuff bad stuff"
tokens = en_tokenizer(text)
span1 = tokens[:2]
span2 = tokens[2:4]
assert hash(span1) != hash(span2)
span3 = tokens[0:2]
assert hash(span3) == hash(span1)
def test_spans_by_character(doc):
span1 = doc[1:-2]
span2 = doc.char_span(span1.start_char, span1.end_char, label='GPE')
assert span1.start_char == span2.start_char
assert span1.end_char == span2.end_char
assert span2.label_ == 'GPE'
def test_span_to_array(doc):
span = doc[1:-2]
arr = span.to_array([ORTH, LENGTH])
assert arr.shape == (len(span), 2)
assert arr[0, 0] == span[0].orth
assert arr[0, 1] == len(span[0])
#def test_span_as_doc(doc):
# span = doc[4:10]
# span_doc = span.as_doc()
# assert span.text == span_doc.text.strip()