[MERGE] add _TestCase__testMethodDoc to attrs_to_keep, do attr saving more sanely

Michael Hudson michael.hudson at canonical.com
Thu Apr 30 05:12:52 BST 2009

I was surprised to find that running a bzrlib TestCase outside bzrlib's
test runner was exploding like this:

AttributeError: 'SvnBzrTotlaModuleTestCase' object has no attribute

It turns out that bzrlib clears all attributes from a testcase that it
doesn't know about, and it doesn't know about _TestCase__testMethodDoc,
which is used by Python 2.4's unittest module (but not later versions).

I also changed the way the attributes were cleared to avoid sticking a
bound method for 'id' into the instance dictionary, which added to my
confusion when figuring this out.

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