[racket] scribble/lp and module+

Folks,

I am trying to write a module with scribble/lp, which contains its own
unit tests (for "raco test").

;;----- main.rkt
#lang scribble/lp
@chunk[<*> (module+ test (require rackunit))]
;;----- FIN


Running this, however gives:
$ racket -t main.rkt
main.rkt:2:11: #%module-begin: bad syntax
   in: (#%module-begin (#%require rackunit))
   context...:
    standard-module-name-resolver

Does scribble/lp build modules that behave like typical racket modules?
Or is there something different happening. I note that the scribble/lp
docs don't talk about modules; rather the language used is in terms of
"programs":

> When running the program, all of the chunk expressions are collected and
> stitched together into a program

What is the situation here?

Regards,

Tim

-- 
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