Re: A proposal...
One idea is that we setup, using the existing perl test framework, a sort of "catch all" test, where the framework simply runs all scripts from a subdir via system() (or whatever), and the reports success or failure. Those scripts could be written in anything. This would mean that people could add tests w/o knowing any Perl at all. It would require, however, some sort of process since those scripts themselves would need to be universal enough that all testers can run them.
I may give that a whirl... I have some nodejs scripts that test websockets and I may see how/if I can "wrap" them within the test framework.