is(guess_encoding($ascii)->name, 'ascii', 'ascii');
like(guess_encoding($latin1), qr/No appropriate encoding/io, 'no ascii');
is(guess_encoding($latin1, 'latin1')->name, 'iso-8859-1', 'iso-8859-1');
is(guess_encoding($ascii)->name, 'ascii', 'ascii');
like(guess_encoding($latin1), qr/No appropriate encoding/io, 'no ascii');
is(guess_encoding($latin1, 'latin1')->name, 'iso-8859-1', 'iso-8859-1');