'\'attachment\', specifying a filename of foo-Ã€.html.
Using RFC2231 encoded UTF-8, but choosing the decomposed form
(lowercase a plus COMBINING DIAERESIS) -- on a Windows target system,
this should be translated to the preferred Unicode normal form
(composed).
UA should offer to download the resource as "foo-Ã€.html".'

def test_attwithfn2231utf8comp(self, header_checker):

    header_checker.check_filename("attachment;    filename*=UTF-8''foo-a%cc%88.html", 'foo-a\xcc\x88.html')
