Define diff stats next to diff in tests
Created by: mrnugget
I that we had a few of these diff.Stats lying around, refering to different diffs, so I put them next to the diffs themselves.
In the case of MockChangesetSyncState I actually defined it on the
state
itself, which I'm not 100% sure about yet, but I think it's
pretty neat to be able to access the properties of the mocked state
through the state
itself.