What is the difference between should and must in scala testing?

Question

Both scalatest and Specs2 have separate matchers for should and must.

However, I cannot find any explanation for why you would use one or the other.

What exactly is the difference?

Answer 1

There is no difference, this is purely a syntactic preference. I personally prefer to use must in specs2 because I think that should can make people think that an expectation is optional.