Writing tests in Python and capturing warnings

My patch to enable keywords from properties throws a warning if the property has
more than one line or if the line length is greater than SVN_KEYWORD_MAX_LEN.
However, I cannot see a way to test for that. I don't want to suppress the
warning completely, nor do I think I want to raise it to an error. There
doesn't seem to be any current test which checks for warnings. Am I missing
something obvious?

TIA

John

-- 
John Peacock
Director of Information Research and Technology
Rowman & Littlefield Publishing Group
4720 Boston Way
Lanham, MD 20706
301-459-3366 x.5010
fax 301-429-5747
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