def test_roman_parse_from_int_out_of_bounds(self):
tests = [
-5000,
-1,
0,
4000,
8888,
]
for arabic in tests:
with self.assertRaises(OutOfBoundsNumberError):
Roman.parse_int(arabic)
def test_parse_roman_from_string_bad_chars(self):
tests = [
'!I',
'X(C',
'iii',
'BCD',
'I1I',
'\\',
'#',
]
for numeral in tests:
with self.assertRaises(InvalidRomanNumeralStringError):
Roman.parse_roman(numeral)
def test_parse_roman_from_string_bad_sequence(self):
tests = [
'IIII',
'XXXX',
'VVVV',
'MMMM',
'DDDD',
'LLLL',
'CDM',
'MDMCLIV',
'VIV',
'LXL',
'DCD',
'IXIX',
]
for numeral in tests:
with self.assertRaises(InvalidRomanNumeralSequenceError):
Roman.parse_roman(numeral)
def test_roman_comp_gt(self):
tests = [
('II', 2),
('III', 3),
('IV', 4),
('V', 5),
('VI', 6),
('VII', 7),
('VIII', 8),
('IX', 9),
('X', 10),
('L', 50),
('C', 100),
('D', 500),
('M', 1000),
('MMMCMXCIX', 3999),
]
for numeral, value in tests:
self.assertTrue(Roman(numeral) > Roman(value - 1))
def test_roman_init_type_invalid(self):
types = [
{'foo': 'bar'},
(0, 0),
{1, 2, 3},
object(),
1.0,
]
for t in types:
with self.assertRaises(InvalidRomanNumeralTypeError):
Roman(t)
def test_roman_length(self):
tests = [
'VI',
'VII',
'VIII',
'IX',
'X',
'L',
'C',
'D',
'M',
'MMMCMXCIX',
]
for numeral in tests:
self.assertEqual(len(Roman(numeral)), len(numeral))
def test_roman_parse_from_int_valid(self):
tests = [
('I', 1),
('II', 2),
('III', 3),
('IV', 4),
('V', 5),
('VI', 6),
('VII', 7),
('VIII', 8),
('IX', 9),
('X', 10),
('L', 50),
('C', 100),
('D', 500),
('M', 1000),
('MMMCMXCIX', 3999),
]
for numeral, value in tests:
self.assertEqual(Roman.parse_int(value), numeral)
def test_parse_roman_from_string_valid(self):
tests = [
('I', 1),
('II', 2),
('III', 3),
('IV', 4),
('V', 5),
('VI', 6),
('VII', 7),
('VIII', 8),
('IX', 9),
('X', 10),
('L', 50),
('C', 100),
('D', 500),
('M', 1000),
('XIX', 19),
('CXC', 190),
('MCM', 1900),
('MMMCMXCIX', 3999),
]
for numeral, value in tests:
self.assertEqual(Roman.parse_roman(numeral), value)
def test_roman_init_type_valid(self):
self.assertIsInstance(Roman('I'), Roman)
self.assertIsInstance(Roman(1), Roman)