def test_floordiv(self):
a = roman.Roman(2)
b = roman.Roman(5)
c = b // a
assert c == 2
assert isinstance(c, roman.Roman)
assert b // 1 == 5
assert 2 // a == 1
b //= 3
assert b == 1
b //= a
assert b == 0
def test_add(self):
a = roman.Roman(1)
b = roman.Roman(2)
c = a + b
assert c == 3
assert isinstance(c, roman.Roman)
assert a + 2 == 3
assert 6 + b == 8
a += 3
assert a == 4
a += b
assert a == 6
def test_mul(self):
a = roman.Roman(2)
b = roman.Roman(3)
c = b * a
assert c == 6
assert isinstance(c, roman.Roman)
assert b * 1 == 3
assert 2 * a == 4
b *= 3
assert b == 9
b *= a
assert b == 18
def test_sub(self):
a = roman.Roman(1)
b = roman.Roman(3)
c = b - a
assert c == 2
assert isinstance(c, roman.Roman)
assert b - 1 == 2
assert 6 - a == 5
b -= 2
assert b == 1
b -= a
assert b == 0
assert b - 2 == -2
def test_create_with_int_and_check_representations(
self, number, expected):
roman_number = roman.Roman(number)
assert f"{roman_number!s}" == expected
expected_repr = (
f"{roman.Roman.__name__}"
f"({roman_number._int}, format={roman_number.format!r})"
)
assert f"{roman_number!r}" == expected_repr
class TestRomanNumbers:
@pytest.mark.parametrize(
"number,expected",
INT_TO_ROMAN_ASCII_ADDITIVE_CASES
)
def test_integer_to_roman_ascii_additive(self, number, expected):
assert roman.roman(number, mapping="ascii-additive") == expected
@pytest.mark.parametrize(
"number,expected",
INT_TO_ROMAN_UNICODE_ADDITIVE_CASES
)
def test_integer_to_roman_unicode_additive(self, number, expected):
assert roman.roman(number, mapping="unicode-additive") == expected
@pytest.mark.parametrize(
"number,expected",
INT_TO_ROMAN_ASCII_STD_CASES
)
def test_integer_to_roman_ascii_std(self, number, expected):
assert roman.roman(number) == expected
@pytest.mark.parametrize(
"number,expected",
INT_TO_ROMAN_ASCII_VARIANT_CASES
)
def test_integer_to_roman_ascii_variant(self, number, expected):
assert roman.roman(number, mapping="ascii-variant") == expected
@pytest.mark.parametrize(
"number,expected",
INT_TO_ROMAN_CUSTOM
)
def test_integer_to_roman_custom(self, number, expected):
assert roman.roman(number, mapping=custom_symbols) == expected
def test_fail_to_roman_if_not_integer(self):
with pytest.raises(AssertionError):
roman.roman("0b0101")
@pytest.mark.parametrize(
"string,expected",
ROMAN_TO_INT_ASCII_CASES
)
def test_roman_to_integer_ascii(self, string, expected):
assert roman.interpret_roman(string) == expected
@pytest.mark.parametrize(
"string,expected",
ROMAN_TO_INT_CUSTOM
)
def test_roman_to_integer(self, string, expected):
assert roman.interpret_roman(string, mapping=custom_symbols) == expected
def test_create_with_no_argument_and_check_value(self):
number = roman.Roman()
assert number == 0
@pytest.mark.parametrize(
"number,expected",
INT_TO_ROMAN_ASCII_STD_CASES
)
def test_create_with_int_and_check_representations(
self, number, expected):
roman_number = roman.Roman(number)
assert f"{roman_number!s}" == expected
expected_repr = (
f"{roman.Roman.__name__}"
f"({roman_number._int}, format={roman_number.format!r})"
)
assert f"{roman_number!r}" == expected_repr
@pytest.mark.parametrize(
"format,number,expected",
[("ascii-std", 9, "IX"),
("ascii-additive", 9, "VIIII")]
)
def test_alter_format(self, format, number, expected):
roman_number = roman.Roman(number)
roman_number.format = format
assert f"{roman_number!s}" == expected
@pytest.mark.parametrize(
"string,expected",
ROMAN_TO_INT_ASCII_CASES
)
def test_create_with_str_and_check_value(self, string, expected):
roman_number = roman.Roman(string)
assert roman_number == expected
@pytest.mark.parametrize(
"argument",
[[], {}, 1j + 1]
)
def test_fail_to_create(self, argument):
with pytest.raises(TypeError):
roman.Roman(argument)
@pytest.mark.parametrize(
"argument,expected",
[(13.3, 13), (13.6, 13), (roman.Roman(1), 1)]
)
def test_create_and_convert_to_int(self, argument, expected):
assert roman.Roman(argument) == expected
def test_add(self):
a = roman.Roman(1)
b = roman.Roman(2)
c = a + b
assert c == 3
assert isinstance(c, roman.Roman)
assert a + 2 == 3
assert 6 + b == 8
a += 3
assert a == 4
a += b
assert a == 6
def test_sub(self):
a = roman.Roman(1)
b = roman.Roman(3)
c = b - a
assert c == 2
assert isinstance(c, roman.Roman)
assert b - 1 == 2
assert 6 - a == 5
b -= 2
assert b == 1
b -= a
assert b == 0
assert b - 2 == -2
def test_mul(self):
a = roman.Roman(2)
b = roman.Roman(3)
c = b * a
assert c == 6
assert isinstance(c, roman.Roman)
assert b * 1 == 3
assert 2 * a == 4
b *= 3
assert b == 9
b *= a
assert b == 18
def test_truediv(self):
a = roman.Roman(2)
b = roman.Roman(5)
c = b / a
assert c == 2
assert isinstance(c, roman.Roman)
assert b / 1 == 5
assert 2 / a == 1
b /= 3
assert b == 1
b /= a
assert b == 0
def test_floordiv(self):
a = roman.Roman(2)
b = roman.Roman(5)
c = b // a
assert c == 2
assert isinstance(c, roman.Roman)
assert b // 1 == 5
assert 2 // a == 1
b //= 3
assert b == 1
b //= a
assert b == 0
def assert_symbols(self, symbols):
assert isinstance(symbols, MutableMapping)
symbol_values = list(symbols.values())
check_order = (
symbol_values[i] < symbol_values[i - 1]
for i in range(1, len(symbol_values))
)
assert all(check_order)
def test_access_symbols(self):
for symbols in roman.symbols.values():
self.assert_symbols(symbols)
def test_symbols_representation(self):
symbols = roman.Symbols()
assert f"{symbols!r}" == "{}"
assert f"{symbols!s}" == "{}"
def test_manipulate_symbols(self):
symbols = roman.Symbols()
symbols["Z"] = 99
assert symbols["Z"] == 99
self.assert_symbols(symbols)
symbols["Y"] = 98
del symbols["Y"]
with pytest.raises(LookupError):
_ = symbols["Y"]
symbols.update({"A": 1, "B": 8, "C": 4})
self.assert_symbols(symbols)
symbols.reset()
with pytest.raises(LookupError):
_ = symbols["Z"]
self.assert_symbols(symbols)
symbols.nullum = "nn"
assert symbols.nullum == "nn"
with pytest.raises(AssertionError):
symbols.nullum = 0
def test_interpret_as_int(self):
assert bin(roman.Roman(3)) == '0b11'
def test_interpret_as_int(self):
assert bin(roman.Roman(3)) == '0b11'
def test_create_and_convert_to_int(self, argument, expected):
assert roman.Roman(argument) == expected
def test_fail_to_create(self, argument):
with pytest.raises(TypeError):
roman.Roman(argument)
def test_create_with_str_and_check_value(self, string, expected):
roman_number = roman.Roman(string)
assert roman_number == expected
def test_alter_format(self, format, number, expected):
roman_number = roman.Roman(number)
roman_number.format = format
assert f"{roman_number!s}" == expected
def test_create_with_no_argument_and_check_value(self):
number = roman.Roman()
assert number == 0