;;;; encoding-iso88697.test --- test suite for Guile's string encodings    -*- mode: scheme; coding: iso-8859-7 -*-
;;;;
;;;; Copyright (C) 2009, 2010, 2014 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

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

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

(when (defined? 'setlocale)
  (setlocale LC_ALL ""))

(define ascii-a (integer->char 65))     ; LATIN CAPITAL LETTER A
(define a-acute (integer->char #x00c1)) ; LATIN CAPITAL LETTER A WITH ACUTE
(define alpha (integer->char #x03b1))   ; GREEK SMALL LETTER ALPHA
(define cherokee-a (integer->char #x13a0)) ; CHEROKEE LETTER A

(with-test-prefix "characters"
  (pass-if "input A"
    (char=? ascii-a #\A))

  (pass-if "input alpha"
    (char=? alpha #\α))

  (pass-if "display A"
           (let ((pt (open-output-string)))
             (set-port-encoding! pt "ISO-8859-7")
             (set-port-conversion-strategy! pt 'escape)
             (display ascii-a pt)
             (string=? "A"
                       (get-output-string pt))))

  (pass-if "display A acute"
           (let ((pt (open-output-string)))
             (set-port-encoding! pt "ISO-8859-7")
             (set-port-conversion-strategy! pt 'escape)
             (display a-acute pt)
             (string-ci=? "\\xc1"
                       (get-output-string pt))))

  (pass-if "display alpha"
           (let ((pt (open-output-string)))
             (set-port-encoding! pt "ISO-8859-7")
             (set-port-conversion-strategy! pt 'escape)
             (display alpha pt)
             (string-ci=? "α"
                       (get-output-string pt))))

  (pass-if "display Cherokee A"
           (let ((pt (open-output-string)))
             (set-port-encoding! pt "ISO-8859-7")
             (set-port-conversion-strategy! pt 'escape)
             (display cherokee-a pt)
             (string-ci=? "\\u13a0"
                       (get-output-string pt))))

  (pass-if "write A"
           (let ((pt (open-output-string)))
             (set-port-encoding! pt "ISO-8859-7")
             (set-port-conversion-strategy! pt 'escape)
             (write ascii-a pt)
             (string=? "#\\A"
                       (get-output-string pt))))

  (pass-if "write alpha"
           (let ((pt (open-output-string)))
             (set-port-encoding! pt "ISO-8859-7")
             (set-port-conversion-strategy! pt 'escape)
             (write alpha pt)
             (string=? "#\\α"
                       (get-output-string pt)))))

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

(with-test-prefix "string length"

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

(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))
	     (eqv? (+ α ρ) 3))))

(with-test-prefix "output errors"

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