def test_subtitle_text_guess_encoding_none():
content = b'\x00d\x00\x80\x00\x00\xff\xff\xff\xff\xff\xff,\x00\x00\x00\x00d\x00d\x00\x00\x02s\x84\x8f\xa9'
subtitle = Subtitle(Language('zho'), False, None, None)
subtitle.content = content
assert subtitle.guess_encoding() is None
assert not subtitle.is_valid()
assert not isinstance(subtitle.text, six.text_type)
def test_subtitle_guess_encoding_utf8():
subtitle = Subtitle(Language('zho'), False, None, None)
subtitle.content = b'Something here'
assert subtitle.guess_encoding() == 'utf-8'
assert isinstance(subtitle.text, six.text_type)
