tests/mop-10.impure-cload.lisp

   1 ;;;; miscellaneous side-effectful tests of the MOP
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 ;;; this file contains tests of REINITIALIZE-INSTANCE on generic
  15 ;;; functions.
  16
  17 (defpackage "MOP-10"
  18   (:use "CL" "SB-MOP" "TEST-UTIL"))
  19
  20 (in-package "MOP-10")
  21
  22 (defclass my-generic-function (standard-generic-function)
  23   ()
  24   (:metaclass funcallable-standard-class))
  25
  26 (defgeneric foo (x)
  27   (:method-combination list)
  28   (:method list ((x float)) (* x x))
  29   (:method list ((x integer)) (1+ x))
  30   (:method list ((x number)) (expt x 2))
  31   (:generic-function-class my-generic-function))
  32
  33 (assert (equal (foo 3) '(4 9)))
  34 (defmethod compute-discriminating-function ((gf my-generic-function))
  35   (let ((orig (call-next-method)))
  36     (lambda (&rest args)
  37       (let ((orig-result (apply orig args)))
  38         (cons gf (reverse orig-result))))))
  39 (assert (equal (foo 3) '(4 9)))
  40 (reinitialize-instance #'foo)
  41 (assert (equal (foo 3) (cons #'foo '(9 4))))