def test_two_three(self):
assert to_roman(2) == 'II'
assert to_roman(3) == 'III'
def test_twenty_fifteen(self):
assert to_roman(2015) == 'MMXV'
def test_one(self):
assert to_roman(1) == 'I'
def test_nine(self):
assert to_roman(9) == 'IX'
def test_ten(self):
assert to_roman(10) == 'X'
def test_six_seven_eight(self):
assert to_roman(6) == 'VI'
assert to_roman(7) == 'VII'
assert to_roman(8) == 'VIII'
def test_five(self):
assert to_roman(5) == 'V'
def test_four(self):
assert to_roman(4) == 'IV'
def test_to_roman_1():
assert to_roman(1) == 'I'
def test_to_roman(arabic, roman):
assert to_roman(arabic) == roman
