test_filename_formatting() fails on Python 3 (Unicode)

[aldanor]

Running the tests on Python 3.3 / Python 3.4:

    def test_filename_formatting():
        assert click.format_filename(b'foo.txt') == 'foo.txt'
        assert click.format_filename(b'/x/foo.txt') == '/x/foo.txt'
        assert click.format_filename(u'/x/foo.txt') == '/x/foo.txt'
        assert click.format_filename(u'/x/foo.txt', shorten=True) == 'foo.txt'
>       assert click.format_filename('/x/foo\xff.txt', shorten=True) \
            == u'foo\ufffd.txt'
E       assert 'fooÿ.txt' == 'foo�.txt'
E         - fooÿ.txt
E         ?    ^
E         + foo�.txt
E         ?    ^

[mitsuhiko]

There is a good chance that test is broken in the release version. It's definitely fixed in git.