tests/funcall.lisp

   1 ;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
   2 ;;;
   3 ;;; funcall.lisp --- Tests function calling.
   4 ;;;
   5 ;;; Copyright (C) 2005, James Bielman  <jamesjb@jamesjb.com>
   6 ;;;
   7 ;;; Permission is hereby granted, free of charge, to any person
   8 ;;; obtaining a copy of this software and associated documentation
   9 ;;; files (the "Software"), to deal in the Software without
  10 ;;; restriction, including without limitation the rights to use, copy,
  11 ;;; modify, merge, publish, distribute, sublicense, and/or sell copies
  12 ;;; of the Software, and to permit persons to whom the Software is
  13 ;;; furnished to do so, subject to the following conditions:
  14 ;;;
  15 ;;; The above copyright notice and this permission notice shall be
  16 ;;; included in all copies or substantial portions of the Software.
  17 ;;;
  18 ;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19 ;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20 ;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 ;;; NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  22 ;;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  23 ;;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24 ;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25 ;;; DEALINGS IN THE SOFTWARE.
  26 ;;;
  27
  28 (in-package #:cffi-tests)
  29
  30 ;;;# Calling with Built-In C Types
  31 ;;;
  32 ;;; Tests calling standard C library functions both passing and
  33 ;;; returning each built-in type.
  34
  35 (deftest funcall.char
  36     (foreign-funcall "toupper" :char (char-code #\a) :char)
  37   #.(char-code #\A))
  38
  39 (deftest funcall.int
  40     (foreign-funcall "abs" :int -100 :int)
  41   100)
  42
  43 (deftest funcall.long
  44     (foreign-funcall "labs" :long -131072 :long)
  45   131072)
  46
  47 (deftest funcall.float
  48     (foreign-funcall "sqrtf" :float 16.0 :float)
  49   4.0)
  50
  51 (deftest funcall.double
  52     (foreign-funcall "sqrt" :double 36.0d0 :double)
  53   6.0d0)
  54
  55 (deftest funcall.string.1
  56     (foreign-funcall "strlen" string "Hello" :int)
  57   5)
  58
  59 (deftest funcall.string.2
  60     (with-foreign-ptr-as-string (s 100)
  61       (setf (mem-ref s :char) 0)
  62       (foreign-funcall "strcpy" :pointer s string "Hello" :pointer)
  63       (foreign-funcall "strcat" :pointer s string ", world!" :pointer))
  64   "Hello, world!")
  65
  66 ;;;# Calling Varargs Functions
  67
  68 ;; The CHAR argument must be passed as :INT because chars are promoted
  69 ;; to ints when passed as variable arguments.
  70 (deftest funcall.varargs.char
  71     (with-foreign-ptr-as-string (s 100)
  72       (setf (mem-ref s :char) 0)
  73       (foreign-funcall "sprintf" :pointer s string "%c" :int 65 :void))
  74   "A")
  75
  76 (deftest funcall.varargs.int
  77     (with-foreign-ptr-as-string (s 100)
  78       (setf (mem-ref s :char) 0)
  79       (foreign-funcall "sprintf" :pointer s string "%d" :int 1000 :void))
  80   "1000")
  81
  82 (deftest funcall.varargs.long
  83     (with-foreign-ptr-as-string (s 100)
  84       (setf (mem-ref s :char) 0)
  85       (foreign-funcall "sprintf" :pointer s string "%ld" :long 131072 :void))
  86   "131072")
  87
  88 ;; There is no FUNCALL.VARARGS.FLOAT as floats are promoted to double
  89 ;; when passed as variable arguments.  Currently this fails in SBCL
  90 ;; and CMU CL on Darwin/ppc.
  91 (deftest funcall.varargs.double
  92     (with-foreign-ptr-as-string (s 100)
  93       (setf (mem-ref s :char) 0)
  94       (foreign-funcall "sprintf" :pointer s string "%.2f"
  95                        :double (coerce pi 'double-float) :void))
  96   "3.14")
  97
  98 (deftest funcall.varargs.string
  99     (with-foreign-ptr-as-string (s 100)
 100       (setf (mem-ref s :char) 0)
 101       (foreign-funcall "sprintf" :pointer s string "%s, %s!"
 102                        string "Hello" string "world" :void))
 103   "Hello, world!")