;;;; strings.test --- test suite for Guile's string functions    -*- mode: scheme; coding: iso-8859-7 -*-
;;;;
;;;; Copyright (C) 2009 Free Software Foundation, Inc.
;;;; 
;;;; This program is free software; you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation; either version 2, or (at your option)
;;;; any later version.
;;;; 
;;;; This program 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 General Public License for more details.
;;;; 
;;;; You should have received a copy of the GNU General Public License
;;;; along with this software; see the file COPYING.  If not, write to
;;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;;;; Boston, MA 02110-1301 USA

(define-module (test-strings)
  #:use-module (test-suite lib)
  #:use-module (srfi srfi-1))

(define exception:conversion
  (cons 'misc-error "^cannot convert to output locale"))

;; Create a string from integer char values, eg. (string-ints 65) => "A"
(define (string-ints . args)
  (apply string (map integer->char args)))

(setlocale LC_ALL "")

(define s1 "Περί")
(define s2 "της")
(define s3 "κριτικής")
(define s4 "και")

(with-test-prefix "string length"

  (pass-if "s1"
	   (eq? (string-length s1) 4))
  
  (pass-if "s2"
	   (eq? (string-length s2) 3))
  
  (pass-if "s3"
	   (eq? (string-length s3) 8))
  
  (pass-if "s4" 
	   (eq? (string-length s4) 3)))

(with-test-prefix "internal encoding"

  (pass-if "s1"
	   (string=? s1 (string-ints #x03a0 #x03b5 #x03c1 #x03af)))
  
  (pass-if "s2"
	   (string=? s2 (string-ints #x03c4 #x03b7 #x03c2)))
  
  (pass-if "s3"
	   (string=? s3 (string-ints #x03ba #x03c1 #x03b9 #x03c4 #x03b9 #x03ba #x03ae #x03c2)))
  
  (pass-if "s4"
	   (string=? s4 (string-ints #x03ba #x03b1 #x03b9))))

(with-test-prefix "chars"
 
  (pass-if "s1"
	   (list= eqv? (string->list s1)
		  (list #\Π #\ε #\ρ #\ί)))
  
  (pass-if "s2"
	   (list= eqv? (string->list s2)
		  (list #\τ #\η #\ς)))
  
  (pass-if "s3"
	   (list= eqv? (string->list s3)
		  (list #\κ #\ρ #\ι #\τ #\ι #\κ #\ή #\ς)))
  
  (pass-if "s4"
	   (list= eqv? (string->list s4)
		  (list #\κ #\α #\ι))))

;; Testing that the display of the string is output in the ISO-8859-7
;; encoding
(with-test-prefix "display"
 
  (pass-if "s1"
	   (let ((pt (open-output-string)))
	     (set-port-encoding! pt "ISO-8859-7")
	     (display s1 pt)
	     (list= eqv? 
		    (list #xd0 #xe5 #xf1 #xdf)
		    (u8vector->list 
		     (get-output-locale-u8vector pt)))))
  (pass-if "s2"
	   (let ((pt (open-output-string)))
	     (set-port-encoding! pt "ISO-8859-7")
	     (display s2 pt)
	     (list= eqv? 
		    (list #xf4 #xe7 #xf2)
		    (u8vector->list 
		     (get-output-locale-u8vector pt))))))

(with-test-prefix "symbols == strings"

  (pass-if "Περί"
	   (eq? (string->symbol s1) 'Περί))

  (pass-if "της"
	   (eq? (string->symbol s2) 'της))
  
  (pass-if "κριτικής"
	   (eq? (string->symbol s3) 'κριτικής))
  
  (pass-if "και"
	   (eq? (string->symbol s4) 'και)))

(with-test-prefix "non-ascii variable names"

  (pass-if "1"
	   (let ((α 1)
		 (ρ 2))
	     (eq? (+ α ρ) 3))))

(with-test-prefix "output errors"

  (pass-if-exception "char #x0400"
		     exception:conversion
		     (let ((pt (open-output-string)))
		       (set-port-encoding! pt "ISO-8859-7")
		       (set-port-conversion-strategy! pt 'error)
		       (display (string-ints #x0400) pt))))

;; Reset locale
(setlocale LC_ALL "C")