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(current-input-port, current-output-port, current-error-port): New tests.
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1 changed files with 62 additions and 1 deletions
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@ -1,6 +1,6 @@
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;;;; srfi-39.test --- -*- scheme -*-
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;;;;
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;;;; Copyright (C) 2004 Free Software Foundation, Inc.
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;;;; Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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;;;;
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;;;; This program is free software; you can redistribute it and/or modify
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;;;; it under the terms of the GNU General Public License as published by
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@ -52,3 +52,64 @@
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(parameterize ((c (a)) (d (b)))
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(and (check a b 0 1)
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(check c d 0 1)))))))
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(let ()
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(define (test-ports param new-port new-port-2)
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(let ((old-port (param)))
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(pass-if "new value"
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(parameterize ((param new-port))
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(eq? (param) new-port)))
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(pass-if "set value"
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(parameterize ((param old-port))
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(param new-port)
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(eq? (param) new-port)))
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(pass-if "old restored"
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(parameterize ((param new-port))
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#f)
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(eq? (param) old-port))
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(pass-if "throw exit"
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(catch 'bail
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(lambda ()
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(parameterize ((param new-port))
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(throw 'bail)))
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(lambda args #f))
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(eq? (param) old-port))
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(pass-if "call-with-current-continuation re-enter"
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(let ((cont #f)
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(count 0)
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(port #f)
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(good #t))
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(parameterize ((param new-port))
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(call-with-current-continuation (lambda (k) (set! cont k)))
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(set! count (1+ count))
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(set! port (param))
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(if (= 1 count) (param new-port-2)))
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(set! good (and good (eq? (param) old-port)))
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(case count
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((1)
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(set! good (and good (eq? port new-port)))
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;; re-entering should give new-port-2 left there last time
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(cont))
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((2)
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(set! good (and good (eq? port new-port-2)))))
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good))
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(pass-if "original unchanged"
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(eq? (param) old-port))))
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(with-test-prefix "current-input-port"
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(test-ports current-input-port
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(open-input-string "xyz") (open-input-string "xyz")))
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(with-test-prefix "current-output-port"
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(test-ports current-output-port
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(open-output-string) (open-output-string)))
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(with-test-prefix "current-error-port"
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(test-ports current-error-port
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(open-output-string) (open-output-string))))
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