tests/stream.impure.lisp

   1 ;;;; tests related to Lisp streams
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (load "assertoid.lisp")
  15 (use-package "ASSERTOID")
  16
  17 ;;; type errors for inappropriate stream arguments, fixed in
  18 ;;; sbcl-0.7.8.19
  19 (locally
  20     (declare (optimize (safety 3)))
  21   (assert (raises-error? (make-two-way-stream (make-string-output-stream)
  22                                               (make-string-output-stream))
  23                          type-error))
  24   (assert (raises-error? (make-two-way-stream (make-string-input-stream "foo")
  25                                               (make-string-input-stream "bar"))
  26                          type-error))
  27   ;; the following two aren't actually guaranteed, because ANSI, as it
  28   ;; happens, doesn't say "should signal an error" for
  29   ;; MAKE-ECHO-STREAM. It's still good to have, but if future
  30   ;; maintenance work causes this test to fail because of these
  31   ;; MAKE-ECHO-STREAM clauses, consider simply removing these clauses
  32   ;; from the test. -- CSR, 2002-10-06
  33   (assert (raises-error? (make-echo-stream (make-string-output-stream)
  34                                            (make-string-output-stream))
  35                          type-error))
  36   (assert (raises-error? (make-echo-stream (make-string-input-stream "foo")
  37                                            (make-string-input-stream "bar"))
  38                          type-error))
  39   (assert (raises-error? (make-concatenated-stream
  40                           (make-string-output-stream)
  41                           (make-string-input-stream "foo"))
  42                          type-error)))
  43
  44 ;;; bug 225: STRING-STREAM was not a class
  45 (eval `(defgeneric bug225 (s)
  46          ,@(mapcar (lambda (class)
  47                      `(:method :around ((s ,class)) (cons ',class (call-next-method))))
  48                    '(stream string-stream sb-impl::string-input-stream
  49                      sb-impl::string-output-stream))
  50          (:method (class) nil)))
  51
  52 (assert (equal (bug225 (make-string-input-stream "hello"))
  53                '(sb-impl::string-input-stream string-stream stream)))
  54 (assert (equal (bug225 (make-string-output-stream))
  55                '(sb-impl::string-output-stream string-stream stream)))
  56
  57 \f
  58 ;;; improper buffering on (SIGNED-BYTE 8) streams (fixed by David Lichteblau):
  59 (let ((p "signed-byte-8-test.data"))
  60   (with-open-file (s p
  61                      :direction :output
  62                      :element-type '(unsigned-byte 8)
  63                      :if-exists :supersede)
  64     (write-byte 255 s))
  65   (with-open-file (s p :element-type '(signed-byte 8))
  66     (assert (= (read-byte s) -1)))
  67   (delete-file p))
  68 \f
  69 ;;; :IF-EXISTS got :ERROR and NIL the wrong way round (reported by
  70 ;;; Milan Zamazal)
  71 (let* ((p "this-file-will-exist")
  72        (stream (open p :direction :output :if-exists :error)))
  73   (assert (null (with-open-file (s p :direction :output :if-exists nil) s)))
  74   (assert (raises-error?
  75            (with-open-file (s p :direction :output :if-exists :error))))
  76   (close stream)
  77   (delete-file p))
  78 \f
  79 (assert (raises-error? (read-byte (make-string-input-stream "abc"))
  80                        type-error))
  81 (assert (raises-error? (with-open-file (s "/dev/zero")
  82                          (read-byte s))
  83                        type-error))
  84 ;;; bidirectional streams getting confused about their position
  85 (let ((p "bidirectional-stream-test"))
  86   (with-open-file (s p :direction :output :if-exists :supersede)
  87     (with-standard-io-syntax
  88       (format s "~S ~S ~S~%" 'these 'are 'symbols)))
  89   (with-open-file (s p :direction :io :if-exists :overwrite)
  90     (read s)
  91     (with-standard-io-syntax
  92       (prin1 'insert s)))
  93   (with-open-file (s p)
  94     (assert (string= (read-line s) "THESE INSERTMBOLS")))
  95   (delete-file p))
  96 ;;; success
  97 (quit :unix-status 104)