+
+;;; CLOSING a non-new streams should not delete them, and superseded
+;;; files should be restored.
+(let ((test "test-file-for-close-should-not-delete"))
+ (macrolet ((test-mode (mode)
+ `(progn
+ (catch :close-test-exit
+ (with-open-file (f test :direction :output :if-exists ,mode)
+ (write-line "test" f)
+ (throw :close-test-exit t)))
+ (assert (and (probe-file test) ,mode)))))
+ (unwind-protect
+ (progn
+ (with-open-file (f test :direction :output)
+ (write-line "test" f))
+ (test-mode :append)
+ ;; FIXME: We really should recover supersede files as well, according to
+ ;; CLOSE in CLHS, but at the moment we don't.
+ ;; (test-mode :supersede)
+ (test-mode :rename)
+ (test-mode :rename-and-delete))
+ (when (probe-file test)
+ (delete-file test)))))
+
+;;; test for read-write invariance of signed bytes, from Bruno Haible
+;;; cmucl-imp 2004-09-06
+(defun bin-stream-test (&key (size (integer-length most-positive-fixnum))
+ (type 'unsigned-byte) (file-name "stream-impure.tmp")
+ (num-bytes 10)
+ (bytes (if (eq type 'signed-byte)
+ (loop :repeat num-bytes :collect
+ (- (random (ash 1 size))
+ (ash 1 (1- size))))
+ (loop :repeat num-bytes :collect
+ (random (ash 1 size))))))
+ (with-open-file (foo file-name :direction :output :if-exists :supersede
+ :element-type (list type size))
+ (dolist (byte bytes)
+ (write-byte byte foo)))
+ (unwind-protect
+ (with-open-file (foo file-name :direction :input
+ :element-type (list type size))
+ (list (stream-element-type foo) (file-length foo) bytes
+ (loop :for byte :in bytes :for nb = (read-byte foo) :collect nb
+ :unless (= nb byte) :do
+ (flet ((by-out (sz by)
+ (format nil "~v,'0,' ,4:b"
+ (+ sz (floor sz 4)) by)))
+ (error "~& * [(~s ~s)] ~a != ~a~%" type size
+ (by-out size byte) (by-out size nb))))))
+ (delete-file file-name)))
+(loop for size from 2 to 40 do (bin-stream-test :size size :type 'signed-byte))
+