[Python-Dev] Using logging in the stdlib and its unit tests

Eric Smith eric at trueblade.com
Tue Dec 7 22:57:20 CET 2010

On 12/07/2010 03:26 PM, Vinay Sajip wrote:
> I would suggest that when unit testing, rather than adding StreamHandlers to log
> to stderr, that something like TestHandler and Matcher from this post:
> http://plumberjack.blogspot.com/2010/09/unit-testing-and-logging.html
> This will allow assertion checking of logged messages without resorting to
> StringIO, getvalue() etc. If people think it's a good idea, I can add the
> TestHandler/Matcher classes to the unit test infrastructure (they wouldn't
> become part of the public API, at least until 3.3, but I presume they could be
> used in the stdlib unit tests).

Wouldn't it make more sense to add these to test.support? I don't think 
we make any guarantees about its API being stable, although I have a 
faint recollection of that being debated in the past.


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