'\'attachment\', specifying a filename of foo.html.
And an extension parameter "foo" which should be ignored (see Section
4.4 of RFC 6266.). In comparison to attwithfilenameandextparam, the
extension parameter actually uses backslash-escapes. This tests whether
the UA properly skips the parameter.
UA should offer to download the resource as "foo.html".'

def test_attwithfilenameandextparamescaped(self, header_checker):

    header_checker.check_filename('attachment;    foo="\\"\\\\";filename="foo.html"', 'foo.html')
