testing forms?

[AlexKnauth]

Would you want a library for testing that you would have to require or import, or would you want it to be provided by the language?

Would you want to have something like check-expect that would go in the top level of the module and expand to a (module+ test ...) ?, or would you want some sort of (test ...) block that would have things like check-equal? that could go anywhere within the test block?
Or would you want testing to be a built in option to forms like def that would expand to both the definition and a (module+ test ...) if it was at the top-level?

And would you want to be able to have some sort of code-coverage tool?

[jarcane]

To be honest, I'm not 100% sure. BASIC is obv. no help here, until VB I don't think any BASIC even came with a test suite, and I never even knew what they were.