Zcoin bug and the fix(?)

So, Zcoin code had a bug in it (See http://www.businessinsider.com/typo-bitcoin-rival-zcoin-attacker-steals-400000-2017-2 or similar articles) and it has been patched 5 days ago (See https://github.com/zcoinofficial/zcoin/commit/b20c177032de3c4bfae62b5ada768a5dc2b4fa67)

The nerd in me is crying for the lost test cases! The engineer is screaming bloody hell! Where are the fracking test cases?!

(image from github)

There is more to this bug than this simple change. See first link below for more info, and updates. And, of course, subsequent fixes has no unit nor integration tests associated with them. Yep, src/test folder hasn't been touched for 6 months.


Related:

• https://makebitcoingreatagain.wordpress.com/2017/02/18/is-the-zcoin-bug-in-checktransaction

• https://news.ycombinator.com/item?id=13672117
• https://news.ycombinator.com/item?id=13673214