The codebase already used the …::class feature in many places. So this
is more for consistency than anything. The …::class feature makes it
much easier to do refactoring in the future.
Note this patch is exclusively touching tests. That should make it
relatively easy to review this. As long as the CI is fine with it, it
should be ok. Right? ;-)
Change-Id: I4d2adee76b4adbc83b2061161fd4e863ba833fcb