Good to see a start on setting up some unit tests. However at present it does not work at all on the current release, as it assumes changes to the API (in particular Archiver#compute_updates has an extra parameter)
I think it's vital that the appropriate tests (i.e. non-dkim) should also be run against the current ponymail without having to make changes to the PonyMail code. This means adding an option to change the compute_updates call, and some way of ignoring tests for the dkim generator (or any other new ones). We should also be able to run the tests against earlier releases of PonyMail. AIUI both 0.10 and 0.11 were used by public archives so at least MID generation should be tested. Sebb.
