def __init__(self, value=0):
if isinstance(value, str):
self.roman = value
self.value = roman_to_int(value)
else:
self.value = int(value)
self.roman = int_to_roman(self.value)
def test_back_and_forth(self):
""" Verify that an integer stay the same after the
coversion to roman numeral and back to integer. """
for i in range(1, 5001):
roman = int_to_roman(i)
decimal = roman_to_int(roman)
self.assertEqual(i, decimal)
def test_known_numerals(self):
""" Verify the conversion of a
list of known roman numerals. """
for i, numeral in enumerate(nums, 1):
self.assertEqual(roman_to_int(numeral), i)
self.assertEqual(int_to_roman(i), numeral)
