Source code for nltk.test.unit.test_aline

# -*- coding: utf-8 -*-
"""
Unit tests for nltk.metrics.aline
"""

from __future__ import unicode_literals

import unittest

from nltk.metrics import aline

[docs]class TestAline(unittest.TestCase): """ Test Aline algorithm for aligning phonetic sequences """
[docs] def test_aline(self): result = aline.align('θin', 'tenwis') expected = [[('θ', 't'), ('i', 'e'), ('n', 'n'), ('-', 'w'), ('-', 'i'), ('-', 's')]] self.assertEqual(result, expected) result = aline.align('jo', 'ʒə') expected = [[('j', 'ʒ'), ('o', 'ə')]] self.assertEqual(result, expected) result = aline.align('pematesiweni', 'pematesewen') expected = [[('p', 'p'), ('e', 'e'), ('m', 'm'), ('a', 'a'), ('t', 't'), ('e', 'e'), ('s', 's'), ('i', 'e'), ('w', 'w'), ('e', 'e'), ('n', 'n'), ('i', '-')]] self.assertEqual(result, expected) result = aline.align('tuwθ', 'dentis') expected = [[('t', 'd'), ('u', 'e'), ('w', '-'), ('-', 'n'), ('-', 't'), ('-', 'i'), ('θ', 's')]] self.assertEqual(result, expected)
[docs] def test_aline_delta(self): """ Test aline for computing the difference between two segments """ result = aline.delta('p', 'q') expected = 20.0 self.assertEqual(result, expected) result = aline.delta('a', 'A') expected = 0.0 self.assertEqual(result, expected)