def test_negative_returns_exception(self):
with self.assertRaises(Exception) as context:
make_numeral(-5)
self.assertTrue(
'There are no negative Roman numerals' in str(context.exception))
def test_one_returns_numeral_I(self):
numeral = make_numeral(1)
self.assertEqual('I', numeral)
def test_zero_returns_exception(self):
with self.assertRaises(Exception) as context:
make_numeral(0)
self.assertTrue(
'There is no Roman numeral for zero' in str(context.exception))
def test_nineteen_eighty_nine_returns_numeral_MCMLXXXIX(self):
numeral = make_numeral(1989)
self.assertEqual('MCMLXXXIX', numeral)
def test_one_thousand_sixty_six_returns_numeral_MLXVI(self):
numeral = make_numeral(1066)
self.assertEqual('MLXVI', numeral)
def test_nine_returns_numeral_IX(self):
numeral = make_numeral(9)
self.assertEqual('IX', numeral)
def test_three_returns_numeral_III(self):
numeral = make_numeral(3)
self.assertEqual('III', numeral)