The attached file contains a function and two tests for it which are
essentially the same. One is a doctest and the other is a TestCase. The
doctest fails and I believe it shouldn't.

Here's what I get:

$ python failingdoctest.py 
**********************************************************************
File "../../provizora/failingdoctest.py", line 8, in __main__._to_xsistemo
Failed example:
    _to_xsistemo(u"ĈĉĜĝĤĥĴĵŜŝŬŭ")
Expected:
    'CxcxGxgxHxhxJxjxSxsxUxux'
Got:
   
"u'\\xc4\\x88\\xc4\\x89\\xc4\\x9c\\xc4\\x9d\\xc4\\xa4\\xc4\\xa5\\xc4\\xb4\\xc4\\xb5\\xc5\\x9c\\xc5\\x9d\\xc5\\xac\\xc5\\xad'"
**********************************************************************
1 items had failures:
   1 of   1 in __main__._to_xsistemo
***Test Failed*** 1 failures.
.
----------------------------------------------------------------------
Ran 1 test in 0.000s

OK


Thank you.