test-suite/tests/srfi-6.test

   1 ;;;; srfi-6.test --- test suite for SRFI-6   -*- scheme -*-
   2 ;;;;
   3 ;;;;    Copyright (C) 2003, 2006, 2012 Free Software Foundation, Inc.
   4 ;;;;
   5 ;;;; This library is free software; you can redistribute it and/or
   6 ;;;; modify it under the terms of the GNU Lesser General Public
   7 ;;;; License as published by the Free Software Foundation; either
   8 ;;;; version 3 of the License, or (at your option) any later version.
   9 ;;;;
  10 ;;;; This library is distributed in the hope that it will be useful,
  11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 ;;;; Lesser General Public License for more details.
  14 ;;;;
  15 ;;;; You should have received a copy of the GNU Lesser General Public
  16 ;;;; License along with this library; if not, write to the Free Software
  17 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18
  19 (use-modules (test-suite lib))
  20
  21 ;; use #:select to see that the bindings we expect are indeed exported
  22 (use-modules ((srfi srfi-6)
  23               #:select ((open-input-string  . open-input-string)
  24                         (open-output-string . open-output-string)
  25                         (get-output-string  . get-output-string))))
  26
  27
  28 (with-test-prefix "open-input-string"
  29
  30   (pass-if "eof on empty"
  31     (let ((port (open-input-string "")))
  32       (eof-object? (read-char port))))
  33
  34   (pass-if "read-char"
  35     (let ((port (open-input-string "xyz")))
  36       (and (char=? #\x (read-char port))
  37            (char=? #\y (read-char port))
  38            (char=? #\z (read-char port))
  39            (eof-object? (read-char port)))))
  40
  41   (pass-if "read-char, Unicode"
  42     ;; String ports should always be Unicode-capable.
  43     ;; See <http://bugs.gnu.org/11197>.
  44     (with-fluids ((%default-port-encoding "ISO-8859-1"))
  45       (let ((port (open-input-string "λμ")))
  46         (and (char=? #\λ (read-char port))
  47              (char=? #\μ (read-char port))))))
  48
  49   (with-test-prefix "unread-char"
  50
  51     (pass-if "one char"
  52       (let ((port (open-input-string "")))
  53         (unread-char #\x port)
  54         (and (char=? #\x (read-char port))
  55              (eof-object? (read-char port)))))
  56
  57     (pass-if "after eof"
  58       (let ((port (open-input-string "")))
  59         (and (eof-object? (read-char port))
  60              (begin
  61                (unread-char #\x port)
  62                (and (char=? #\x (read-char port))
  63                     (eof-object? (read-char port)))))))
  64
  65     (pass-if "order"
  66       (let ((port (open-input-string "")))
  67         (unread-char #\x port)
  68         (unread-char #\y port)
  69         (unread-char #\z port)
  70         (and (char=? #\z (read-char port))
  71              (char=? #\y (read-char port))
  72              (char=? #\x (read-char port))
  73              (eof-object? (read-char port)))))))
  74
  75
  76 (with-test-prefix "open-output-string"
  77
  78   (pass-if "empty"
  79     (let ((port (open-output-string)))
  80       (string=? "" (get-output-string port))))
  81
  82   (pass-if "xyz"
  83     (let ((port (open-output-string)))
  84       (display "xyz" port)
  85       (string=? "xyz" (get-output-string port))))
  86
  87   (pass-if "λ"
  88     ;; Writing to an output string should always work.
  89     ;; See <http://bugs.gnu.org/11197>.
  90     (with-fluids ((%default-port-encoding "ISO-8859-1"))
  91       (let ((port (open-output-string)))
  92         (display "λ" port)
  93         (string=? "λ" (get-output-string port)))))
  94
  95   (pass-if "seek"
  96     (let ((port (open-output-string)))
  97       (display "abcdef" port)
  98       (seek port 2 SEEK_SET)
  99       (display "--" port)
 100       (string=? "ab--ef" (get-output-string port)))))