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#! /usr/bin/env python3
# $Id$
# Author: Adam Turner.
# Copyright: This module is placed in the public domain
# or under the `Zero Clause BSD licence`_,
# whichever is more permissive.
#
# .. _Zero Clause BSD licence: https://opensource.org/license/0BSD
"""
Tests for `docutils.utils._roman_numerals`.
"""
from pathlib import Path
import sys
import unittest
if __name__ == '__main__':
# prepend the "docutils root" to the Python library path
# so we import the local `docutils` package.
sys.path.insert(0, str(Path(__file__).resolve().parents[2]))
from docutils.utils._roman_numerals import (
MIN,
MAX,
RomanNumeral,
OutOfRangeError,
InvalidRomanNumeralError,
)
class NewRomanNumeralTestCase(unittest.TestCase):
def test_zero(self) -> None:
with self.assertRaises(OutOfRangeError) as ctx:
RomanNumeral(0)
msg = str(ctx.exception)
self.assertEqual(
msg,
'Number out of range (must be between 1 and 4,999). Got 0.',
)
def test_one(self) -> None:
self.assertEqual(int(RomanNumeral(1)), 1)
def test_MIN(self) -> None:
self.assertEqual(int(RomanNumeral(MIN)), MIN)
def test_forty_two(self) -> None:
self.assertEqual(int(RomanNumeral(42)), 42)
def test_four_thousand_nine_hundred_and_ninety_nine(self) -> None:
self.assertEqual(int(RomanNumeral(4_999)), 4_999)
def test_MAX(self) -> None:
self.assertEqual(int(RomanNumeral(MAX)), MAX)
def test_five_thousand(self) -> None:
with self.assertRaises(OutOfRangeError) as ctx:
RomanNumeral(5_000)
msg = str(ctx.exception)
self.assertEqual(
msg,
'Number out of range (must be between 1 and 4,999). Got 5000.',
)
def test_minus_one(self) -> None:
with self.assertRaises(OutOfRangeError) as ctx:
RomanNumeral(-1)
msg = str(ctx.exception)
self.assertEqual(
msg,
'Number out of range (must be between 1 and 4,999). Got -1.',
)
def test_float(self) -> None:
with self.assertRaises(TypeError) as ctx:
RomanNumeral(4.2)
msg = str(ctx.exception)
self.assertEqual(
msg,
"RomanNumeral: an integer is required, not 'float'",
)
class ToStringTestCase(unittest.TestCase):
def test_str(self):
test_numerals = [
'I', 'II', 'III', 'IV', 'V',
'VI', 'VII', 'VIII', 'IX', 'X',
'XI', 'XII', 'XIII', 'XIV', 'XV',
'XVI', 'XVII', 'XVIII', 'XIX', 'XX',
'XXI', 'XXII', 'XXIII', 'XXIV',
]
for n, roman_str in enumerate(test_numerals, start=1):
with self.subTest(id=n, roman_str=roman_str):
num = RomanNumeral(n)
self.assertEqual(f'{num}', roman_str)
def test_uppercase(self):
test_numerals = [
'I', 'II', 'III', 'IV', 'V',
'VI', 'VII', 'VIII', 'IX', 'X',
'XI', 'XII', 'XIII', 'XIV', 'XV',
'XVI', 'XVII', 'XVIII', 'XIX', 'XX',
'XXI', 'XXII', 'XXIII', 'XXIV',
]
for n, roman_str in enumerate(test_numerals, start=1):
with self.subTest(id=n, roman_str=roman_str):
num = RomanNumeral(n)
self.assertEqual(num.to_uppercase(), roman_str)
def test_lowercase(self):
test_numerals = [
'i', 'ii', 'iii', 'iv', 'v',
'vi', 'vii', 'viii', 'ix', 'x',
'xi', 'xii', 'xiii', 'xiv', 'xv',
'xvi', 'xvii', 'xviii', 'xix', 'xx',
'xxi', 'xxii', 'xxiii', 'xxiv',
]
for n, roman_str in enumerate(test_numerals, start=1):
with self.subTest(id=n, roman_str=roman_str):
num = RomanNumeral(n)
self.assertEqual(num.to_lowercase(), roman_str)
def test_minitrue(self):
# IGNORANCE IS STRENGTH
num = RomanNumeral(1984)
self.assertEqual(f'{num}', 'MCMLXXXIV')
self.assertEqual(num.to_uppercase(), 'MCMLXXXIV')
self.assertEqual(num.to_lowercase(), 'mcmlxxxiv')
class FromStringTestCase(unittest.TestCase):
def test_uppercase(self):
test_numerals = [
'I', 'II', 'III', 'IV', 'V',
'VI', 'VII', 'VIII', 'IX', 'X',
'XI', 'XII', 'XIII', 'XIV', 'XV',
'XVI', 'XVII', 'XVIII', 'XIX', 'XX',
'XXI', 'XXII', 'XXIII', 'XXIV',
]
for n, roman_str in enumerate(test_numerals, start=1):
with self.subTest(id=n, roman_str=roman_str):
expected = RomanNumeral(n)
parsed = RomanNumeral.from_string(roman_str)
self.assertEqual(expected, parsed)
def test_lowercase(self):
test_numerals = [
'i', 'ii', 'iii', 'iv', 'v',
'vi', 'vii', 'viii', 'ix', 'x',
'xi', 'xii', 'xiii', 'xiv', 'xv',
'xvi', 'xvii', 'xviii', 'xix', 'xx',
'xxi', 'xxii', 'xxiii', 'xxiv',
]
for n, roman_str in enumerate(test_numerals, start=1):
with self.subTest(id=n, roman_str=roman_str):
expected = RomanNumeral(n)
parsed = RomanNumeral.from_string(roman_str)
self.assertEqual(expected, parsed)
def test_special(self):
parsed = RomanNumeral.from_string('MDCCCXXIII')
self.assertEqual(RomanNumeral(1823), parsed)
parsed = RomanNumeral.from_string('mdcccxxiii')
self.assertEqual(RomanNumeral(1823), parsed)
parsed = RomanNumeral.from_string('MCMLXXXIV')
self.assertEqual(RomanNumeral(1984), parsed)
parsed = RomanNumeral.from_string('mcmlxxxiv')
self.assertEqual(RomanNumeral(1984), parsed)
parsed = RomanNumeral.from_string('MM')
self.assertEqual(RomanNumeral(2000), parsed)
parsed = RomanNumeral.from_string('mm')
self.assertEqual(RomanNumeral(2000), parsed)
parsed = RomanNumeral.from_string('MMMMCMXCIX')
self.assertEqual(RomanNumeral(4_999), parsed)
parsed = RomanNumeral.from_string('mmmmcmxcix')
self.assertEqual(RomanNumeral(4_999), parsed)
def test_invalid(self):
with self.assertRaises(InvalidRomanNumeralError) as ctx:
RomanNumeral.from_string('Not a Roman numeral!')
msg = str(ctx.exception)
self.assertEqual(msg, 'Invalid Roman numeral: Not a Roman numeral!')
def test_mixed_case(self):
with self.assertRaises(InvalidRomanNumeralError) as ctx:
RomanNumeral.from_string('McMlXxXiV')
msg = str(ctx.exception)
self.assertEqual(msg, 'Invalid Roman numeral: McMlXxXiV')
class RoundTripTestCase(unittest.TestCase):
def test_round_trip(self):
for n in range(MIN, MAX + 1, 19):
num = RomanNumeral(n)
parsed = RomanNumeral.from_string(str(num))
self.assertEqual(num, parsed)
if __name__ == '__main__':
unittest.main()
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