I have now commenced writing the unit tests (and submitted pull request).Open a new topic when you have time. I can set u up with some scripts I based off of python-bitcoinlib and maybe a bunch of vps.
The first tests are pretty basic, we just check that a block passes standard
check and fExcessive block flag works.
Interesting tidbit: the checkblock unit test cannot be run in Core out of
the box due to missing data. See https://github.com/bitcoin/bitcoin/issues/6320
So we are one step ahead