def implementation(self, fragment_context, html, expected, errors, test_name):
if '<!-- Starts with UTF-8 BOM -->' in html:
raw = b'\xef\xbb\xbf' + html[3:].encode('ascii')
self.assertIs(check_bom(raw), codecs.BOM_UTF8)
return
if '''document.write('<meta charset="ISO-8859-' + '2">')''' in html:
raise unittest.SkipTest('buggy html5lib test')
raw = html.encode('utf-8')
output = check_bom(raw) or check_for_meta_charset(raw) or 'windows-1252'
error_msg = '\n'.join(
map(type(''), ['\n\nInput:', html, '\nExpected:', expected, '\nReceived:', output]))
self.ae(expected.lower(), output, error_msg + '\n')
def test_check_bom(self):
for bom in BOMS:
self.assertIs(bom, check_bom(bom + b'xxx'))