plt/util.ss
;;;
;;; Time-stamp: <06/04/24 12:21:15 nhw>
;;;
;;; Copyright (C) 2004 by Noel Welsh.
;;;

;;; This library is free software; you can redistribute it
;;; and/or modify it under the terms of the GNU Lesser
;;; General Public License as published by the Free Software
;;; Foundation; either version 2.1 of the License, or (at
;;; your option) any later version.

;;; Web testingis distributed in the hope that it will be
;;; useful, but WITHOUT ANY WARRANTY; without even the
;;; implied warranty of MERCHANTABILITY or FITNESS FOR A
;;; PARTICULAR PURPOSE.  See the GNU Lesser General Public
;;; License for more details.

;;; You should have received a copy of the GNU Lesser
;;; General Public License along with Web testing; if not,
;;; write to the Free Software Foundation, Inc., 59 Temple
;;; Place, Suite 330, Boston, MA 02111-1307 USA

;;; Author: Noel Welsh <noelwelsh@yahoo.com>
;;
;;
;; Commentary:

(module util mzscheme

  (provide require/expose
           test-suite*
           check-regexp-match
           check-regexp-match*)

  (require (lib "etc.ss")
           "test.ss")
  
  ;; Requires a module and exposes some of its unprovided
  ;; (non-syntax!)  identifiers.
  ;; USAGE: (require/expose MODULE-NAME (IDS ...))
  ;;   where MODULE-NAME is as in the MzScheme manual (i.e.,
  ;;   a standard module spec) and IDS are the un-provided
  ;;   identifiers that you wish to expose in the current
  ;;   module.
  (define-syntax (require/expose stx)
    (syntax-case stx ()
      [(_ mod (ids ...))
       (quasisyntax/loc stx
         (begin
           (require (only mod))
           (define-values (ids ...)
             (parameterize
               ([current-load-relative-directory
                 #,(datum->syntax-object
                    stx
                    `(,#'this-expression-source-directory)
                    stx)])
               (let ([ns (module->namespace 'mod)])
                 (parameterize ([current-namespace ns])
                   (values
                    (namespace-variable-value 'ids)...)))))))]))

  (define-syntax test-suite*
    (syntax-rules ()
      ((test-suite* name (case-name case-body ...) ...)
       (test-suite
        name
        (test-case case-name case-body ...) ...))))

  (define-simple-check (check-regexp-match regex string)
    (regexp-match regex string))

  )