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78 lines
1.7 KiB
Python
78 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Unit tests for nltk.metrics.aline
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"""
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import unittest
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from nltk.metrics import aline
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class TestAline(unittest.TestCase):
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"""
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Test Aline algorithm for aligning phonetic sequences
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"""
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def test_aline(self):
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result = aline.align('θin', 'tenwis')
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expected = [
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[('θ', 't'), ('i', 'e'), ('n', 'n'), ('-', 'w'), ('-', 'i'), ('-', 's')]
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]
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self.assertEqual(result, expected)
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result = aline.align('jo', 'ʒə')
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expected = [[('j', 'ʒ'), ('o', 'ə')]]
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self.assertEqual(result, expected)
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result = aline.align('pematesiweni', 'pematesewen')
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expected = [
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[
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('p', 'p'),
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('e', 'e'),
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('m', 'm'),
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('a', 'a'),
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('t', 't'),
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('e', 'e'),
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('s', 's'),
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('i', 'e'),
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('w', 'w'),
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('e', 'e'),
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('n', 'n'),
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('i', '-'),
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]
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]
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self.assertEqual(result, expected)
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result = aline.align('tuwθ', 'dentis')
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expected = [
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[
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('t', 'd'),
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('u', 'e'),
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('w', '-'),
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('-', 'n'),
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('-', 't'),
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('-', 'i'),
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('θ', 's'),
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]
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]
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self.assertEqual(result, expected)
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def test_aline_delta(self):
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"""
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Test aline for computing the difference between two segments
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"""
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result = aline.delta('p', 'q')
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expected = 20.0
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self.assertEqual(result, expected)
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result = aline.delta('a', 'A')
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expected = 0.0
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self.assertEqual(result, expected)
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