tests/mop-19.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 tests the accessor method class portion of the protocol
  15 ;;; for Initialization of Class Metaobjects.
  16
  17 (defpackage "MOP-19"
  18   (:use "CL" "SB-MOP"))
  19
  20 (in-package "MOP-19")
  21
  22 (defclass my-class (standard-class) ())
  23 (defmethod validate-superclass ((a my-class) (b standard-class)) t)
  24
  25 (defclass my-reader (standard-reader-method) ())
  26 (defclass my-writer (standard-writer-method) ())
  27
  28 (defvar *calls* nil)
  29
  30 (defmethod reader-method-class ((c my-class) s &rest initargs)
  31   (push (cons (slot-definition-name s) 'reader) *calls*)
  32   (find-class 'my-reader))
  33 (defmethod writer-method-class ((c my-class) s &rest initargs)
  34   (push (cons (slot-definition-name s) 'writer) *calls*)
  35   (find-class 'my-writer))
  36
  37 (defclass foo ()
  38   ((a :reader a)
  39    (b :writer b)
  40    (c :accessor c))
  41   (:metaclass my-class))
  42
  43 (assert (= (length *calls*) 4))
  44 (assert (= (count 'a *calls* :key #'car) 1))
  45 (assert (= (count 'b *calls* :key #'car) 1))
  46 (assert (= (count 'c *calls* :key #'car) 2))
  47 (assert (= (count 'reader *calls* :key #'cdr) 2))
  48 (assert (= (count 'writer *calls* :key #'cdr) 2))
  49 (let ((method (find-method #'a nil (list (find-class 'foo)))))
  50   (assert (eq (class-of method) (find-class 'my-reader))))
  51 (let ((method (find-method #'b nil (list (find-class t) (find-class 'foo)))))
  52   (assert (eq (class-of method) (find-class 'my-writer))))
  53 \f
  54 (defclass my-other-class (my-class) ())
  55 (defmethod validate-superclass ((a my-other-class) (b standard-class)) t)
  56
  57 (defclass my-other-reader (standard-reader-method) ())
  58
  59 (defclass my-direct-slot-definition (standard-direct-slot-definition) ())
  60
  61 (defmethod direct-slot-definition-class ((c my-other-class) &rest args)
  62   (find-class 'my-direct-slot-definition))
  63
  64 (defmethod reader-method-class :around
  65     (class (s my-direct-slot-definition) &rest initargs)
  66   (find-class 'my-other-reader))
  67
  68 (defclass bar ()
  69   ((d :reader d)
  70    (e :writer e))
  71   (:metaclass my-other-class))
  72
  73 (let ((method (find-method #'d nil (list (find-class 'bar)))))
  74   (assert (eq (class-of method) (find-class 'my-other-reader))))
  75 (let ((method (find-method #'e nil (list (find-class t) (find-class 'bar)))))
  76   (assert (eq (class-of method) (find-class 'my-writer))))