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;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
;;;
;;; strings.lisp --- Tests for foreign string conversion.
;;;
;;; Copyright (C) 2005, James Bielman <jamesjb@jamesjb.com>
;;; Copyright (C) 2007, Luis Oliveira <loliveira@common-lisp.net>
;;;
;;; Permission is hereby granted, free of charge, to any person
;;; obtaining a copy of this software and associated documentation
;;; files (the "Software"), to deal in the Software without
;;; restriction, including without limitation the rights to use, copy,
;;; modify, merge, publish, distribute, sublicense, and/or sell copies
;;; of the Software, and to permit persons to whom the Software is
;;; furnished to do so, subject to the following conditions:
;;;
;;; The above copyright notice and this permission notice shall be
;;; included in all copies or substantial portions of the Software.
;;;
;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
;;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
;;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
;;; DEALINGS IN THE SOFTWARE.
;;;
(in-package #:cffi-tests)
;;;# Foreign String Conversion Tests
;;;
;;; With the implementation of encoding support, there are a lot of
;;; things that can go wrong with foreign string conversions. This is
;;; a start at defining tests for strings and encoding conversion, but
;;; there needs to be a lot more.
(babel:enable-sharp-backslash-syntax)
;;; *ASCII-TEST-STRING* contains the characters in the ASCII character
;;; set that we will convert to a foreign string and check against
;;; *ASCII-TEST-BYTES*. We don't bother with control characters.
;;;
;;; FIXME: It would probably be good to move these tables into files
;;; in "tests/", especially if we ever want to get fancier and have
;;; tests for more encodings.
(eval-when (:compile-toplevel :load-toplevel :execute)
(defparameter *ascii-test-string*
(concatenate 'string " !\"#$%&'()*+,-./0123456789:;"
"<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]"
"^_`abcdefghijklmnopqrstuvwxyz{|}~")))
;;; *ASCII-TEST-BYTES* contains the expected ASCII encoded values
;;; for each character in *ASCII-TEST-STRING*.
(eval-when (:compile-toplevel :load-toplevel :execute)
(defparameter *ascii-test-bytes*
(let ((vector (make-array 95 :element-type '(unsigned-byte 8))))
(loop for i from 0
for code from 32 below 127
do (setf (aref vector i) code)
finally (return vector)))))
;;; Test basic consistency converting a string to and from Lisp using
;;; the default encoding.
(deftest string.conversion.basic
(with-foreign-string (s *ascii-test-string*)
(foreign-string-to-lisp s))
#.*ascii-test-string* 95)
(deftest string.conversion.basic.2
(with-foreign-string ((ptr size) "123" :null-terminated-p nil)
(values (foreign-string-to-lisp ptr :count 3) size))
"123" 3)
;;; Ensure that conversion of *ASCII-TEST-STRING* to a foreign buffer
;;; and back preserves ASCII encoding.
(deftest string.encoding.ascii
(with-foreign-string (s *ascii-test-string* :encoding :ascii)
(let ((vector (make-array 95 :element-type '(unsigned-byte 8))))
(loop for i from 0 below (length vector)
do (setf (aref vector i) (mem-ref s :unsigned-char i)))
vector))
#.*ascii-test-bytes*)
;;; FIXME: bogus test. We need support for BOM or UTF-16{BE,LE}.
(pushnew 'string.encoding.utf-16.basic rtest::*expected-failures*)
;;; Test UTF-16 conversion of a string back and forth. Tests proper
;;; null terminator handling for wide character strings and ensures no
;;; byte order marks are added. (Why no BOM? --luis)
;;;
;;; FIXME: an identical test using :UTF-16 wouldn't work because on
;;; little-endian architectures, :UTF-16 defaults to little-endian
;;; when writing and big-endian on reading because the BOM is
;;; suppressed.
#-babel::8-bit-chars
(progn
(deftest string.encoding.utf-16le.basic
(with-foreign-string (s *ascii-test-string* :encoding :utf-16le)
(foreign-string-to-lisp s :encoding :utf-16le))
#.*ascii-test-string* 190)
(deftest string.encoding.utf-16be.basic
(with-foreign-string (s *ascii-test-string* :encoding :utf-16be)
(foreign-string-to-lisp s :encoding :utf-16be))
#.*ascii-test-string* 190))
;;; Ensure that writing a long string into a short buffer does not
;;; attempt to write beyond the edge of the buffer, and that the
;;; resulting string is still null terminated.
(deftest string.short-write.1
(with-foreign-pointer (buf 6)
(setf (mem-ref buf :unsigned-char 5) 70)
(lisp-string-to-foreign "ABCDE" buf 5 :encoding :ascii)
(values (mem-ref buf :unsigned-char 4)
(mem-ref buf :unsigned-char 5)))
0 70)
#-babel::8-bit-chars
(deftest string.encoding.utf-8.basic
(with-foreign-pointer (buf 7 size)
(let ((string (concatenate 'babel:unicode-string
'(#\u03bb #\u00e3 #\u03bb))))
(lisp-string-to-foreign string buf size :encoding :utf-8)
(loop for i from 0 below size
collect (mem-ref buf :unsigned-char i))))
(206 187 195 163 206 187 0))
(defparameter *basic-latin-alphabet* "abcdefghijklmnopqrstuvwxyz")
(deftest string.encodings.all.basic
(let (failed)
;;; FIXME: UTF-{32,16} and friends fail due to lack of BOM. See
;;; STRING.ENCODING.UTF-16.BASIC for more details.
(dolist (encoding (remove-if (lambda (x)
(member x '(:utf-32 :utf-16 :ucs-2)))
(babel:list-character-encodings)))
;; (format t "Testing ~S~%" encoding)
(with-foreign-string (ptr *basic-latin-alphabet* :encoding encoding)
(let ((string (foreign-string-to-lisp ptr :encoding encoding)))
;; (format t " got ~S~%" string)
(unless (string= *basic-latin-alphabet* string)
(push encoding failed)))))
failed)
nil)
;;; rt: make sure *default-foreign-enconding* binds to a keyword
(deftest string.encodings.default
(keywordp *default-foreign-encoding*)
t)
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