test_charmapcodec
u'abc' == u'abc': OK
u'abcdef' == u'abcdef': OK
u'defabc' == u'defabc': OK
u'dabcf' == u'dabcf': OK
u'dabcfabc' == u'dabcfabc': OK
'abc' == 'abc': OK
'abcdef' == 'abcdef': OK
'defabc' == 'defabc': OK
'dabcf' == 'dabcf': OK
'dabcfabc' == 'dabcfabc': OK
u'def' == u'def': OK
u'def' == u'def': OK
u'df' == u'df': OK
u'df' == u'df': OK
\001 maps to undefined: OK