How to handle unit tests in F#?

Question

How do you create unit tests in F#? I typically use the UnitTest portion of Visual Studio with a [TestClass] and [TestMethod] attributes and use the Test View to run these. I know I can just create a script file and run these, but I like the way that it is currently handled.

Answer 1

Check out fscheck. It's a port of Haskell's Quickcheck. Fscheck allows you to specify properties a function must satisfy which it will then verify against a "large number of randomly generated cases".

It's something you can't easily do with an imperative language like C#.

Answer 2

I'd rather use FsUnit or FsTest to write tests in F#, it feels more natural than OO xUnit style tests.

EDIT 2014: I now consider FsUnit/FsTest to be mostly useless syntax sugar. And "more natural than OO" doesn't mean absolutely anything. A few months ago I wrote my current thoughts on testing here (I recommend reading the entire thread).