[MERGE] Reduce test infrastructure code duplication

[Robert Collins]

This cleansup the test adapters somewhat, and makes it easier to hook in
additional attributes for some tests, by making the parameterisation
basically data driven.

-Rob
-- 
GPG key available at: <http://www.robertcollins.net/keys.txt>.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: adapter-cleanup.patch
Type: text/x-patch
Size: 189589 bytes
Desc: not available
Url : https://lists.ubuntu.com/archives/bazaar/attachments/20070628/4bdffd4b/attachment-0001.bin 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
Url : https://lists.ubuntu.com/archives/bazaar/attachments/20070628/4bdffd4b/attachment-0001.pgp