'\'attachment\', specifying a filename of foo-Ã€.html.
Using RFC2231 encoded ISO-8859-1, but declaring UTF-8.
The octet %E4 does not represent a valid UTF-8 octet sequence, so the
UA should really ignore the parameter.'

def test_attwithfn2231iso_bad(self, header_checker):

    header_checker.check_ignored("attachment;    filename*=utf-8''foo-%E4.html")
