guile/test-suite/tests/arbiters.test

;;;; arbiters.test --- test arbiters functions -*- scheme -*-
;;;; 
;;;; Copyright (C) 2004, 2006 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 2.1 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-suite test-arbiters)
  #:use-module (test-suite lib))

;;;
;;; arbiter display
;;;

(with-test-prefix "arbiter display"
  ;; nothing fancy, just exercise the printing code

  (pass-if "never locked"
    (let ((arb  (make-arbiter "foo"))
	  (port (open-output-string)))
      (display arb port)
      #t))

  (pass-if "locked"
    (let ((arb  (make-arbiter "foo"))
	  (port (open-output-string)))
      (try-arbiter arb)
      (display arb port)
      #t))

  (pass-if "unlocked"
    (let ((arb  (make-arbiter "foo"))
	  (port (open-output-string)))
      (try-arbiter arb)
      (release-arbiter arb)
      (display arb port)
      #t)))

;;;
;;; try-arbiter
;;;

(with-test-prefix "try-arbiter"

  (pass-if "lock"
    (let ((arb (make-arbiter "foo")))
      (try-arbiter arb)))

  (pass-if "already locked"
    (let ((arb (make-arbiter "foo")))
      (try-arbiter arb)
      (not (try-arbiter arb))))

  (pass-if "already locked twice"
    (let ((arb (make-arbiter "foo")))
      (try-arbiter arb)
      (try-arbiter arb)
      (not (try-arbiter arb)))))

;;;
;;; release-arbiter
;;;

(with-test-prefix "release-arbiter"

  (pass-if "lock"
    (let ((arb (make-arbiter "foo")))
      (try-arbiter arb)
      (release-arbiter arb)))

  (pass-if "never locked"
    (let ((arb (make-arbiter "foo")))
      (not (release-arbiter arb))))

  (pass-if "never locked twice"
    (let ((arb (make-arbiter "foo")))
      (release-arbiter arb)
      (not (release-arbiter arb))))

  (pass-if "already unlocked"
    (let ((arb (make-arbiter "foo")))
      (try-arbiter arb)
      (release-arbiter arb)
      (not (release-arbiter arb))))

  (pass-if "already unlocked twice"
    (let ((arb (make-arbiter "foo")))
      (try-arbiter arb)
      (release-arbiter arb)
      (release-arbiter arb)
      (not (release-arbiter arb)))))