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import pytest
from roman_numerals import (
InvalidRomanNumeralError,
RomanNumeral,
)
from tests.utils import TEST_NUMERALS_LOWER, TEST_NUMERALS_UPPER
@pytest.mark.parametrize(('n', 'roman_str'), enumerate(TEST_NUMERALS_UPPER, start=1))
def test_uppercase(n: int, roman_str: str) -> None:
expected = RomanNumeral(n)
parsed = RomanNumeral.from_string(roman_str)
assert expected == parsed
@pytest.mark.parametrize(('n', 'roman_str'), enumerate(TEST_NUMERALS_LOWER, start=1))
def test_lowercase(n: int, roman_str: str) -> None:
expected = RomanNumeral(n)
parsed = RomanNumeral.from_string(roman_str)
assert expected == parsed
def test_special() -> None:
parsed = RomanNumeral.from_string('MDLXXXIII')
assert RomanNumeral(1583) == parsed
parsed = RomanNumeral.from_string('mdlxxxiii')
assert RomanNumeral(1583) == parsed
parsed = RomanNumeral.from_string('MCMLXXXIV')
assert RomanNumeral(1984) == parsed
parsed = RomanNumeral.from_string('mcmlxxxiv')
assert RomanNumeral(1984) == parsed
parsed = RomanNumeral.from_string('MM')
assert RomanNumeral(2000) == parsed
parsed = RomanNumeral.from_string('mm')
assert RomanNumeral(2000) == parsed
parsed = RomanNumeral.from_string('MMMCMXCIX')
assert RomanNumeral(3_999) == parsed
parsed = RomanNumeral.from_string('mmmcmxcix')
assert RomanNumeral(3_999) == parsed
def test_invalid() -> None:
with pytest.raises(InvalidRomanNumeralError) as ctx:
RomanNumeral.from_string('Not a Roman numeral!')
msg = str(ctx.value)
assert msg == 'Invalid Roman numeral: Not a Roman numeral!'
def test_mixed_case() -> None:
with pytest.raises(InvalidRomanNumeralError) as ctx:
RomanNumeral.from_string('McMlXxXiV')
msg = str(ctx.value)
assert msg == 'Invalid Roman numeral: McMlXxXiV'
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