def test_2(): assert getRoman(6) == 'VI'
def test_1(): assert getRoman(1014) == 'MXIV'
def test_mix(): assert getRoman('1776invalid') == ''
def test_decimal(): assert getRoman(1.776) == ''
def test_string(): assert getRoman('invalid') == ''
def test_3(): assert getRoman(1776) == 'MDCCLXXVI'