;;; the end of string and the string is adjustable the string will be
;;; implicitly extended, otherwise an error will be signalled. The
;;; latter case is provided for in the code, but not currently
-;;; excercised since SBCL fill-pointer arrays are always (currently) adjustable.
+;;; excercised since SBCL fill-pointer arrays are always (currently)
+;;; adjustable.
;;;
;;; * END will refer to the ARRAY-TOTAL-SIZE of string, not
;;; FILL-POINTER, since by definition the FILE-POSITION will always be
;;; a FILL-POINTER, so that would be of limited use.
;;;
-;;; * Rewinding the stream works with owerwriting semantics.
+;;; * Rewinding the stream works with overwriting semantics.
;;;
#+nil (let ((str (make-array 0
:element-type 'character
(frob 'character)
(frob 'base-char)
(frob 'nil))
+
+(with-open-file (s "/dev/null" :element-type '(signed-byte 48))
+ (assert (eq :eof (read-byte s nil :eof))))
+
+(let* ((is (make-string-input-stream "foo"))
+ (os (make-string-output-stream))
+ (s (make-echo-stream is os))
+ (sequence (copy-seq "abcdef")))
+ (assert (= (read-sequence sequence s) 3))
+ (assert (string= sequence "foodef"))
+ (assert (string= (get-output-stream-string os) "foo")))
+
+(let* ((is (make-string-input-stream "foo"))
+ (os (make-string-output-stream))
+ (s (make-echo-stream is os))
+ (sequence (copy-seq "abcdef")))
+ (assert (char= #\f (read-char s)))
+ (assert (= (read-sequence sequence s) 2))
+ (assert (string= sequence "oocdef"))
+ (assert (string= (get-output-stream-string os) "foo")))
+
+(let* ((is (make-string-input-stream "foo"))
+ (os (make-string-output-stream))
+ (s (make-echo-stream is os))
+ (sequence (copy-seq "abcdef")))
+ (assert (char= #\f (read-char s)))
+ (unread-char #\f s)
+ (assert (= (read-sequence sequence s) 3))
+ (assert (string= sequence "foodef"))
+ (assert (string= (get-output-stream-string os) "foo")))