def test_from_roman_known_values(self):
'''from_roman should give known result with known input'''
for integer, numeral in self.known_values:
result = from_roman(numeral)
self.assertEqual(integer, result)
def test_roundtrip(self):
"""from_roman(to_roman(n))==n for all n"""
for integer in range(1, 5000):
numeral = to_roman(integer)
result = from_roman(numeral)
self.assertEqual(integer, result)