test-suite/tests/srfi-31.test

   1 ;;;; srfi-31.test --- Test suite for Guile's SRFI-31 functions. -*- scheme -*-
   2 ;;;;
   3 ;;;; Copyright (C) 2004, 2006 Free Software Foundation, Inc.
   4 ;;;;
   5 ;;;; This library is free software; you can redistribute it and/or
   6 ;;;; modify it under the terms of the GNU Lesser General Public
   7 ;;;; License as published by the Free Software Foundation; either
   8 ;;;; version 2.1 of the License, or (at your option) any later version.
   9 ;;;;
  10 ;;;; This library is distributed in the hope that it will be useful,
  11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 ;;;; Lesser General Public License for more details.
  14 ;;;;
  15 ;;;; You should have received a copy of the GNU Lesser General Public
  16 ;;;; License along with this library; if not, write to the Free Software
  17 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18
  19 (define-module (test-suite test-srfi-31)
  20   #:use-module (test-suite lib)
  21   #:use-module (srfi srfi-31))
  22
  23 (with-test-prefix "rec special form"
  24
  25   (pass-if-exception "bogus variable" '(misc-error . ".*")
  26     (sc-expand '(rec #:foo)))
  27
  28   (pass-if "rec expressions"
  29     (let ((ones-list (rec ones (cons 1 (delay ones)))))
  30       (and (= 1 (car ones-list))
  31            (= 1 (car (force (cdr ones-list)))))))
  32
  33   (pass-if "rec functions"
  34     (let ((test-func (rec (add-upto n)
  35                        (if (positive? n)
  36                            (+ n (add-upto (- n 1)))
  37                            0))))
  38       (= 15 (test-func 5)))))