spaCy/tests/serialize/test_codecs.py

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2015-07-17 19:21:10 +00:00
from __future__ import unicode_literals
import pytest
import numpy
from spacy.vocab import Vocab
from spacy.serialize.packer import _BinaryCodec
from spacy.serialize.packer import make_vocab_codec
from spacy.serialize.packer import _AttributeCodec
from spacy.serialize.bits import BitArray
def test_binary():
codec = _BinaryCodec()
bits = BitArray()
msg = numpy.array([0, 1, 0, 1, 1], numpy.int32)
codec.encode(msg, bits)
result = numpy.array([0, 0, 0, 0, 0], numpy.int32)
codec.decode(iter(bits), result)
assert list(msg) == list(result)
def test_attribute():
freqs = {'the': 10, 'quick': 3, 'brown': 4, 'fox': 1, 'jumped': 5, 'over': 8,
'lazy': 1, 'dog': 2, '.': 9}
int_map = {'the': 0, 'quick': 1, 'brown': 2, 'fox': 3, 'jumped': 4, 'over': 5,
'lazy': 6, 'dog': 7, '.': 8}
codec = _AttributeCodec([(int_map[string], freq) for string, freq in freqs.items()])
bits = BitArray()
msg = numpy.array([1, 7], dtype=numpy.int32)
msg_list = list(msg)
codec.encode(msg, bits)
result = numpy.array([0, 0], dtype=numpy.int32)
codec.decode(bits, result)
assert msg_list == list(result)
def test_vocab_codec():
def get_lex_props(string, prob):
return {
'flags': 0,
'length': len(string),
'orth': string,
'lower': string,
'norm': string,
'shape': string,
'prefix': string[0],
'suffix': string[-3:],
'cluster': 0,
'prob': prob,
'sentiment': 0
}
vocab = Vocab()
vocab['dog'] = get_lex_props('dog', 0.001)
vocab['the'] = get_lex_props('the', 0.05)
vocab['jumped'] = get_lex_props('jumped', 0.005)
codec = make_vocab_codec(vocab)
bits = BitArray()
ids = [vocab[s].id for s in ('the', 'dog', 'jumped')]
msg = numpy.array(ids, dtype=numpy.int32)
msg_list = list(msg)
codec.encode(msg, bits)
result = numpy.array(range(len(msg)), dtype=numpy.int32)
codec.decode(bits, result)
assert msg_list == list(result)