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(current-input-port, current-output-port, current-error-port): New tests.

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This commit is contained in:
Kevin Ryde 2005-01-11 23:48:42 +00:00
parent b9f69396c7
commit b85bb56c1c
1 changed files with 61 additions and 0 deletions
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61
test-suite/tests/srfi-39.test
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@ -54,3 +54,64 @@
(parameterize ((c (a)) (d (b)))
(and (check a b 0 1)
(check c d 0 1)))))))
(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))))