Yeah I wanted to use alg none for some unit tests once (it was easier than setting up the next lowest tier security option) but whichever Java library I was using had completely disabled it. I could see it had been supported at some point but it had been updated so that it couldn't be enabled at all.

Yes, that’s a good thing. That alg:none might be easy in tests is not a good reason for a weak mode in the real code and spec.

Been there, done that, wrote the stub/mock and ended up with the better test. :)