def testSmallNumber(): assert arabicToRoman(6) == 'VI'
def testMax(): assert arabicToRoman(4999) == 'MMMMCMXCIX'
def testNumberandString(): assert arabicToRoman('aloha345hi') == ''
def testDecimalNumber(): assert arabicToRoman(3.14) == ''
def testString(): assert arabicToRoman('I love the romans') == ''
def testTooBig(): assert arabicToRoman(8000) == ''
def testBigNumber(): assert arabicToRoman(3987) == 'MMMCMLXXXVII'
def testMediumNumber(): assert arabicToRoman(869) == 'DCCCLXIX'