66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
|
|
"""
|
|
Unit tests for nltk.compat.
|
|
See also nltk/test/compat.doctest.
|
|
"""
|
|
from __future__ import absolute_import, unicode_literals
|
|
import unittest
|
|
|
|
from nltk.text import Text
|
|
from nltk.compat import PY3, python_2_unicode_compatible
|
|
|
|
|
|
def setup_module(module):
|
|
from nose import SkipTest
|
|
|
|
if PY3:
|
|
raise SkipTest("test_2x_compat is for testing nltk.compat under Python 2.x")
|
|
|
|
|
|
class TestTextTransliteration(unittest.TestCase):
|
|
txt = Text(["São", "Tomé", "and", "Príncipe"])
|
|
|
|
def test_repr(self):
|
|
self.assertEqual(repr(self.txt), br"<Text: S\xe3o Tom\xe9 and Pr\xedncipe...>")
|
|
|
|
def test_str(self):
|
|
self.assertEqual(str(self.txt), b"<Text: Sao Tome and Principe...>")
|
|
|
|
|
|
class TestFraction(unittest.TestCase):
|
|
def test_unnoramlize_fraction(self):
|
|
from fractions import Fraction as NativePythonFraction
|
|
from nltk.compat import Fraction as NLTKFraction
|
|
|
|
# The native fraction should throw a TypeError in Python < 3.5
|
|
with self.assertRaises(TypeError):
|
|
NativePythonFraction(0, 1000, _normalize=False)
|
|
|
|
# Using nltk.compat.Fraction in Python < 3.5
|
|
compat_frac = NLTKFraction(0, 1000, _normalize=False)
|
|
# The numerator and denominator does not change.
|
|
assert compat_frac.numerator == 0
|
|
assert compat_frac.denominator == 1000
|
|
# The floating point value remains normalized.
|
|
assert float(compat_frac) == 0.0
|
|
|
|
# Checks that the division is not divided by
|
|
# # by greatest common divisor (gcd).
|
|
six_twelve = NLTKFraction(6, 12, _normalize=False)
|
|
assert six_twelve.numerator == 6
|
|
assert six_twelve.denominator == 12
|
|
|
|
one_two = NLTKFraction(1, 2, _normalize=False)
|
|
assert one_two.numerator == 1
|
|
assert one_two.denominator == 2
|
|
|
|
# Checks against the native fraction.
|
|
six_twelve_original = NativePythonFraction(6, 12)
|
|
# Checks that rational values of one_two and six_twelve is the same.
|
|
assert float(one_two) == float(six_twelve) == float(six_twelve_original)
|
|
|
|
# Checks that the fraction does get normalized, even when
|
|
# _normalize == False when numerator is using native
|
|
# fractions.Fraction.from_float
|
|
assert NLTKFraction(3.142, _normalize=False) == NativePythonFraction(3.142)
|