On Python 2, sys.stdout and print can normally handle any combination of str and unicode objects. However, StringIO.StringIO can only safely handle one or the other. If the program writes both a unicode string, and a non-ASCII str string, then the getvalue() method will fail with UnicodeDecodeError [1].
In nose, that causes the script to suddenly abort, with the cryptic UnicodeDecodeError.
This fix catches UnicodeError when trying to get the captured output, and will replace the captured output with a warning message.
On Python 2,
sys.stdoutandprintcan normally handle any combination ofstrandunicodeobjects. However,StringIO.StringIOcan only safely handle one or the other. If the program writes both aunicodestring, and a non-ASCIIstrstring, then thegetvalue()method will fail withUnicodeDecodeError[1].In nose, that causes the script to suddenly abort, with the cryptic
UnicodeDecodeError.This fix catches
UnicodeErrorwhen trying to get the captured output, and will replace the captured output with a warning message.Fixes #816
[1] https://github.com/python/cpython/blob/2.7/Lib/StringIO.py#L258