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+;;;; srfi-39.test --- -*- scheme -*-
+;;;;
+;;;; Copyright (C) 2004, 2005, 2006, 2008 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-srfi-39)
+ #:use-module (test-suite lib)
+ #:use-module (srfi srfi-34)
+ #:use-module (srfi srfi-39)
+ #:duplicates (last) ;; avoid warning about srfi-34 replacing `raise'
+ )
+
+(define a (make-parameter 3))
+(define b (make-parameter 4))
+
+(define (check a b a-val b-val)
+ (and (eqv? (a) a-val)) (eqv? (b) b-val))
+
+(define c (make-parameter 2 (lambda (x) (if (< x 10) x 10))))
+(define d (make-parameter 15 (lambda (x) (if (< x 10) x 10))))
+
+(with-test-prefix "SRFI-39"
+
+ (pass-if "test 1"
+ (check a b 3 4))
+
+ (pass-if "test 2"
+ (parameterize ((a 2) (b 1))
+ (and (check a b 2 1)
+ (parameterize ((b 8))
+ (check a b 2 8)))))
+
+ (pass-if "test 3"
+ (check a b 3 4))
+
+ (pass-if "test 4"
+ (check c d 2 10))
+
+ (pass-if "test 5"
+ (parameterize ((a 0) (b 1) (c 98) (d 9))
+ (and (check a b 0 1)
+ (check c d 10 9)
+ (parameterize ((c (a)) (d (b)))
+ (and (check a b 0 1)
+ (check c d 0 1))))))
+
+ (pass-if "SRFI-34"
+ (let ((inside? (make-parameter #f)))
+ (call/cc (lambda (return)
+ (with-exception-handler
+ (lambda (c)
+ ;; This handler should be called in the dynamic
+ ;; environment installed by `parameterize'.
+ (return (inside?)))
+ (lambda ()
+ (parameterize ((inside? #t))
+ (raise 'some-exception)))))))))
+
+(let ()
+ (define (test-ports param new-port new-port-2)
+ (let ((old-port (param)))
+
+ (pass-if "new value"
+ (parameterize ((param new-port))
+ (eq? (param) new-port)))
+
+ (pass-if "set value"
+ (parameterize ((param old-port))
+ (param new-port)
+ (eq? (param) new-port)))
+
+ (pass-if "old restored"
+ (parameterize ((param new-port))
+ #f)
+ (eq? (param) old-port))
+
+ (pass-if "throw exit"
+ (catch 'bail
+ (lambda ()
+ (parameterize ((param new-port))
+ (throw 'bail)))
+ (lambda args #f))
+ (eq? (param) old-port))
+
+ (pass-if "call/cc re-enter"
+ (let ((cont #f)
+ (count 0)
+ (port #f)
+ (good #t))
+ (parameterize ((param new-port))
+ (call/cc (lambda (k) (set! cont k)))
+ (set! count (1+ count))
+ (set! port (param))
+ (if (= 1 count) (param new-port-2)))
+ (set! good (and good (eq? (param) old-port)))
+ (case count
+ ((1)
+ (set! good (and good (eq? port new-port)))
+ ;; re-entering should give new-port-2 left there last time
+ (cont))
+ ((2)
+ (set! good (and good (eq? port new-port-2)))))
+ good))
+
+ (pass-if "original unchanged"
+ (eq? (param) old-port))))
+
+ (with-test-prefix "current-input-port"
+ (test-ports current-input-port
+ (open-input-string "xyz") (open-input-string "xyz")))
+
+ (with-test-prefix "current-output-port"
+ (test-ports current-output-port
+ (open-output-string) (open-output-string)))
+
+ (with-test-prefix "current-error-port"
+ (test-ports current-error-port
+ (open-output-string) (open-output-string))))