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	tarrays.lisp (3464B)
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	1 ;;;; -- Mode: lisp; indent-tabs-mode: nil --
	2 ;;;
	3 ;;; arrays.lisp --- Tests for foreign arrays.
	4 ;;;
	5 ;;; Copyright (C) 2005-2006, James Bielman <[email protected]>
	6 ;;; Copyright (C) 2005-2007, Luis Oliveira <[email protected]>
	7 ;;;
	8 ;;; Permission is hereby granted, free of charge, to any person
	9 ;;; obtaining a copy of this software and associated documentation
	10 ;;; files (the "Software"), to deal in the Software without
	11 ;;; restriction, including without limitation the rights to use, copy,
	12 ;;; modify, merge, publish, distribute, sublicense, and/or sell copies
	13 ;;; of the Software, and to permit persons to whom the Software is
	14 ;;; furnished to do so, subject to the following conditions:
	15 ;;;
	16 ;;; The above copyright notice and this permission notice shall be
	17 ;;; included in all copies or substantial portions of the Software.
	18 ;;;
	19 ;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	20 ;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	21 ;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	22 ;;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
	23 ;;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
	24 ;;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	25 ;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	26 ;;; DEALINGS IN THE SOFTWARE.
	27 ;;;
	28
	29 ;;;#Foreign Array Conversion Tests
	30 ;;;
	31
	32 (in-package #:cffi-tests)
	33
	34 (deftest array.foreign-to-lisp.basic
	35 (with-foreign-array (ptr #(1 2 3 4 5) '(:array :int32 5))
	36 (foreign-array-to-lisp ptr '(:array :int32 5)))
	37 #(1 2 3 4 5))
	38
	39 (deftest array.foreign-to-lisp.adjustable
	40 (with-foreign-array (ptr #(1 2 3 4 5) '(:array :int32 5))
	41 (let ((array (foreign-array-to-lisp ptr '(:array :int32 5)
	42 :adjustable t)))
	43 (adjustable-array-p array)))
	44 t)
	45
	46 (deftest array.foreign-to-lisp.displaced
	47 (let ((array (make-array 10 :initial-contents '(1 2 3 4 5 6 7 8 9 0)…
	48 (with-foreign-array (ptr #(10 20 30 40 50) '(:array :int32 5))
	49 (let ((displaced (foreign-array-to-lisp ptr '(:array :int32 5)
	50 :displaced-to array
	51 :displaced-index-offset …
	52 array)))
	53 #(1 2 3 4 5 10 20 30 40 50))
	54
	55 ;;; Implementation detail: 15.1.2.2 of the CL standard states that the o…
	56 ;;; truly portable array specializations are for bits (bit-vectors) and
	57 ;;; characters (strings). Since char-codes are implementation-dependent,…
	58 ;;; would be tricky to write a portable test for them without generating
	59 ;;; characters at runtime. So, for a truly portable test, we are only le…
	60 ;;; bits, which are luckily numeric, and equal to (UNSIGNED-BYTE 1).
	61 ;;; This is why the below test is so terribly wasteful, spending a whole…
	62 ;;; for a single bit - CFFI has no capabilities for dealing with single …
	63 ;;; and this test is only meant to check correctness of the :ELEMENT-TYPE
	64 ;;; argument to MAKE-ARRAY. In actual use cases of specialized
	65 ;;; FOREIGN-ARRAY-TO-LISP, capable implementations will be able to make
	66 ;;; specialized arrays of types that are commonly optimized for and/or
	67 ;;; representable in hardware, such as (UNSIGNED-BYTE 8) on x86 architec…
	68 (deftest array.foreign-to-lisp.specialized
	69 (with-foreign-array (ptr #(1 0 1 0 1 1 1 0) '(:array :int8 8))
	70 (foreign-array-to-lisp ptr '(:array :int8 8) :element-type 'bit))
	71 #*10101110)