guile/test-suite/tests/procs.test

;;;; procss.test --- Procedures.      -*- mode: scheme; coding: utf-8; -*-
;;;;
;;;; 	Copyright (C) 2010 Free Software Foundation, Inc.
;;;;
;;;; 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 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is 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 this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

(define-module (test-procs)
  #:use-module (srfi srfi-1)
  #:use-module (test-suite lib))

(with-test-prefix "common procedures"

  (pass-if "identity"
    (eq? 'a (identity 'a)))

  (pass-if "const"
    (and (procedure? (const 'a))
         (eq? 'a ((const 'a)))
         (eq? 'a ((const 'a) 'b 'c 'd))))

  (pass-if "negate"
    (and (procedure? (negate number?))
         ((negate real?) 'dream)
         ((negate odd?) 0)))

  (with-test-prefix "compose"

    (pass-if "identity"
      (eq? 1+ (compose 1+)))

    (pass-if "simple"
      (= 2.0 ((compose sqrt 1+ 1+) 2)))

    (pass-if "multiple values"
      (equal? ((compose zip unzip2) '((1 2) (a b)))
              '((1 2) (a b))))))