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116 lines
3.6 KiB
Python
116 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Unit tests for Senna
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"""
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from os import environ, path, sep
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import logging
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import unittest
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from nltk.classify import Senna
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from nltk.tag import SennaTagger, SennaChunkTagger, SennaNERTagger
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# Set Senna executable path for tests if it is not specified as an environment variable
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if 'SENNA' in environ:
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SENNA_EXECUTABLE_PATH = path.normpath(environ['SENNA']) + sep
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else:
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SENNA_EXECUTABLE_PATH = '/usr/share/senna-v3.0'
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senna_is_installed = path.exists(SENNA_EXECUTABLE_PATH)
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@unittest.skipUnless(senna_is_installed, "Requires Senna executable")
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class TestSennaPipeline(unittest.TestCase):
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"""Unittest for nltk.classify.senna"""
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def test_senna_pipeline(self):
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"""Senna pipeline interface"""
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pipeline = Senna(SENNA_EXECUTABLE_PATH, ['pos', 'chk', 'ner'])
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sent = 'Dusseldorf is an international business center'.split()
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result = [
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(token['word'], token['chk'], token['ner'], token['pos'])
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for token in pipeline.tag(sent)
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]
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expected = [
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('Dusseldorf', 'B-NP', 'B-LOC', 'NNP'),
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('is', 'B-VP', 'O', 'VBZ'),
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('an', 'B-NP', 'O', 'DT'),
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('international', 'I-NP', 'O', 'JJ'),
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('business', 'I-NP', 'O', 'NN'),
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('center', 'I-NP', 'O', 'NN'),
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]
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self.assertEqual(result, expected)
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@unittest.skipUnless(senna_is_installed, "Requires Senna executable")
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class TestSennaTagger(unittest.TestCase):
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"""Unittest for nltk.tag.senna"""
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def test_senna_tagger(self):
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tagger = SennaTagger(SENNA_EXECUTABLE_PATH)
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result = tagger.tag('What is the airspeed of an unladen swallow ?'.split())
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expected = [
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('What', 'WP'),
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('is', 'VBZ'),
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('the', 'DT'),
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('airspeed', 'NN'),
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('of', 'IN'),
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('an', 'DT'),
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('unladen', 'NN'),
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('swallow', 'NN'),
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('?', '.'),
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]
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self.assertEqual(result, expected)
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def test_senna_chunk_tagger(self):
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chktagger = SennaChunkTagger(SENNA_EXECUTABLE_PATH)
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result_1 = chktagger.tag('What is the airspeed of an unladen swallow ?'.split())
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expected_1 = [
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('What', 'B-NP'),
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('is', 'B-VP'),
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('the', 'B-NP'),
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('airspeed', 'I-NP'),
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('of', 'B-PP'),
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('an', 'B-NP'),
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('unladen', 'I-NP'),
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('swallow', 'I-NP'),
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('?', 'O'),
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]
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result_2 = list(chktagger.bio_to_chunks(result_1, chunk_type='NP'))
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expected_2 = [
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('What', '0'),
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('the airspeed', '2-3'),
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('an unladen swallow', '5-6-7'),
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]
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self.assertEqual(result_1, expected_1)
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self.assertEqual(result_2, expected_2)
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def test_senna_ner_tagger(self):
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nertagger = SennaNERTagger(SENNA_EXECUTABLE_PATH)
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result_1 = nertagger.tag('Shakespeare theatre was in London .'.split())
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expected_1 = [
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('Shakespeare', 'B-PER'),
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('theatre', 'O'),
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('was', 'O'),
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('in', 'O'),
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('London', 'B-LOC'),
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('.', 'O'),
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]
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result_2 = nertagger.tag('UN headquarters are in NY , USA .'.split())
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expected_2 = [
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('UN', 'B-ORG'),
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('headquarters', 'O'),
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('are', 'O'),
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('in', 'O'),
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('NY', 'B-LOC'),
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(',', 'O'),
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('USA', 'B-LOC'),
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('.', 'O'),
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]
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self.assertEqual(result_1, expected_1)
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self.assertEqual(result_2, expected_2)
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