Currently, the tests Ive seen are too broad, given the large amount of factions in the game. I propose that someone mod a game to be setup with 2 factions, plus senate. Use an isolated area and put both factions there, i.e. Britain. Give AI large army and yourself a minimal garrison. Now let him siege you and perform the save/load system. Make sure there are no rebels in his/your area for accuracy. Report results.

I feel, given the CA description, that you need to limit the variables much more than just starting a campaign with all factions on board. I feel this would definitely give a much better example.