;;;; multilingual.nottest --- tests of multilingual support    -*- scheme -*-
;;;; Jim Blandy <jimb@red-bean.com> --- September 1999
;;;; This isn't a test yet, because we don't have multilingual support yet.
;;;;
;;;; 	Copyright (C) 1999, 2006 Free Software Foundation, Inc.
;;;; 
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;; 
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;;; Lesser General Public License for more details.
;;;; 
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

(use-modules (test-suite lib))


;;; Tests of Emacs 20.4 character encoding.

;;; Check that characters are being encoded correctly.

;;; These tests are specific to the Emacs 20.4 encoding; they'll need
;;; to be replaced when Guile switches to UTF-8.  See mb.c for a
;;; description of this encoding.

(define (check-encoding char-number encoding)
  (let ((singleton (string (integer->char char-number))))
    (pass-if (string-append "encoding character "
			    (number->string char-number))
	     (equal? (string->bytes singleton) encoding))
    (pass-if (string-append "decoding character "
			    (number->string char-number))
	     (catch #t
		    (lambda ()
		      (equal? (bytes->string encoding) singleton))
		    (lambda dummy #f)))))
		      

;; Check some ASCII characters.
(check-encoding 0 #y(0))
(check-encoding 127 #y(127))
(check-encoding 31 #y(31))
(check-encoding 32 #y(32))
(check-encoding 42 #y(42))

;;; Sometimes we mark something as an "end of range", when it's not
;;; actually the last character that would use that encoding form.
;;; This is because not all character set numbers are assigned, and we
;;; can't use unassigned character set numbers.  So the value given is
;;; the last value which actually corresponds to something in a real
;;; character set.

;; Check some characters encoded in two bytes.
(check-encoding 2208 #y(#x81 #xA0)) ; beginning of range
(check-encoding 3839 #y(#x8d #xFF)) ; end of range
(check-encoding 2273 #y(#x81 #xE1))

;; Check some big characters encoded in three bytes.
(check-encoding 20512  #y(#x90 #xA0 #xA0)) ; beginning of range
(check-encoding 180223 #y(#x99 #xFF #xFF)) ; end of range
(check-encoding 53931  #y(#x92 #xA5 #xAB))

;; Check some small characters encoded in three bytes --- some from
;; the #x9A prefix range, and some from the #x9B prefix range.
(check-encoding 6176   #y(#x9A #xA0 #xA0))  ; start of the #9A prefix range
(check-encoding 7167   #y(#x9A #xA7 #xFF))  ; end   of the #9A prefix range
(check-encoding 14368  #y(#x9B #xE0 #xA0))  ; start of the #9B prefix range
(check-encoding 14591  #y(#x9B #xE1 #xFF))  ; end   of the #9B prefix range

;; Check some characters encoded in four bytes.
(check-encoding 266272 #y(#x9C #xF0 #xA0 #xA0)) ; start of the #9C prefix range
(check-encoding 294911 #y(#x9C #xF1 #xFF #xFF)) ; end   of the #9C prefix range
(check-encoding 348192 #y(#x9D #xF5 #xA0 #xA0)) ; start of the #9D prefix range
(check-encoding 475135 #y(#x9D #xFC #xFF #xFF)) ; start of the #9D prefix range
