i think that Unit Tests should be added to Dragonfly Project's code.
avoiding to notice error does not make this error disappear.
it's like hiding head in sand, pretending there's no problem.
Unit Tests help to face reality better & help to detect code errors earlier.
there's little of work overhead with that methodology, but this time is regained later because there's less time spent on fixing errors.
it's easier to fix one error at time than two or more at once.
we can also sleep better, being more secure that code works correctly more often.
less delusions better sleep.
see also, if You wish or need, ... : Conditions, Security Harness, Software Complexity.