tests/mop.impure.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 ;;;; Note that the MOP is not in an entirely supported state.
  15 ;;;; However, this seems a good a way as any of ensuring that we have
  16 ;;;; no regressions.
  17
  18 (defpackage "MOP-TEST"
  19   (:use "CL" "SB-MOP"))
  20
  21 (in-package "MOP-TEST")
  22 \f
  23 ;;; Readers for Class Metaobjects (pp. 212--214 of AMOP)
  24 (defclass red-herring (forward-ref) ())
  25
  26 (assert (null (class-direct-slots (find-class 'forward-ref))))
  27 (assert (null (class-direct-default-initargs
  28                (find-class 'forward-ref))))
  29 \f
  30 ;;; Readers for Generic Function Metaobjects (pp. 216--218 of AMOP)
  31 (defgeneric fn-with-odd-arg-precedence (a b c)
  32   (:argument-precedence-order b c a))
  33
  34 (assert (equal
  35          (generic-function-lambda-list #'fn-with-odd-arg-precedence)
  36          '(a b c)))
  37 (assert (equal
  38          (generic-function-argument-precedence-order #'fn-with-odd-arg-precedence)
  39          '(b c a)))
  40 ;;; Test for DOCUMENTATION's order, which was wrong until sbcl-0.7.8.39
  41 (assert (equal
  42          (generic-function-argument-precedence-order #'documentation)
  43          (let ((ll (generic-function-lambda-list #'documentation)))
  44            (list (nth 1 ll) (nth 0 ll)))))
  45
  46 (assert (null
  47          (generic-function-declarations #'fn-with-odd-arg-precedence)))
  48 (defgeneric gf-with-declarations (x)
  49   (declare (optimize (speed 3)))
  50   (declare (optimize (safety 0))))
  51 (let ((decls (generic-function-declarations #'gf-with-declarations)))
  52   (assert (= (length decls) 2))
  53   (assert (member '(optimize (speed 3)) decls :test #'equal))
  54   (assert (member '(optimize (safety 0)) decls :test #'equal)))
  55 \f
  56 ;;; Readers for Slot Definition Metaobjects (pp. 221--224 of AMOP)
  57
  58 ;;; Ensure that SLOT-DEFINITION-ALLOCATION returns :INSTANCE/:CLASS as
  59 ;;; appropriate.
  60 (defclass sdm-test-class ()
  61   ((an-instance-slot :accessor an-instance-slot)
  62    (a-class-slot :allocation :class :accessor a-class-slot)))
  63 (dolist (m (list (list #'an-instance-slot :instance)
  64                  (list #'a-class-slot :class)))
  65   (let ((methods (generic-function-methods (car m))))
  66     (assert (= (length methods) 1))
  67     (assert (eq (slot-definition-allocation
  68                  (accessor-method-slot-definition
  69                   (car methods)))
  70                 (cadr m)))))
  71 \f
  72 ;;; Class Finalization Protocol (see section 5.5.2 of AMOP)
  73 (let ((finalized-count 0))
  74   (defmethod finalize-inheritance :after ((x standard-class))
  75     (incf finalized-count))
  76   (defun get-count () finalized-count))
  77 (defclass finalization-test-1 () ())
  78 (make-instance 'finalization-test-1)
  79 (assert (= (get-count) 1))
  80 (defclass finalization-test-2 (finalization-test-3) ())
  81 (assert (= (get-count) 1))
  82 (defclass finalization-test-3 () ())
  83 (make-instance 'finalization-test-3)
  84 (assert (or (= (get-count) 2) (= (get-count) 3)))
  85 (make-instance 'finalization-test-2)
  86 (assert (= (get-count) 3))
  87 \f
  88 ;;; Bits of FUNCALLABLE-STANDARD-CLASS are easy to break; make sure
  89 ;;; that it is at least possible to define classes with that as a
  90 ;;; metaclass.
  91 (defclass gf-class (standard-generic-function) ()
  92   (:metaclass funcallable-standard-class))
  93 (defgeneric g (a b c)
  94   (:generic-function-class gf-class))
  95 \f
  96 ;;; until sbcl-0.7.12.47, PCL wasn't aware of some direct class
  97 ;;; relationships.  These aren't necessarily true, but are probably
  98 ;;; not going to change often.
  99 (dolist (x '(number array sequence character symbol))
 100   (assert (eq (car (class-direct-superclasses (find-class x)))
 101               (find-class t)))
 102   (assert (member (find-class x)
 103                   (class-direct-subclasses (find-class t)))))
 104 \f
 105 ;;; the class-prototype of the NULL class used to be some weird
 106 ;;; standard-instance-like thing.  Make sure it's actually NIL.
 107 ;;;
 108 ;;; (and FIXME: eventually turn this into asserting that the prototype
 109 ;;; of all built-in-classes is of the relevant type)
 110 (assert (null (class-prototype (find-class 'null))))
 111 \f
 112 ;;; simple consistency checks for the SB-MOP package: all of the
 113 ;;; functionality specified in AMOP is in functions and classes:
 114 (assert (null (loop for x being each external-symbol in "SB-MOP"
 115                     unless (or (fboundp x) (find-class x)) collect x)))
 116 ;;; and all generic functions in SB-MOP have at least one specified
 117 ;;; method, except for UPDATE-DEPENDENT
 118 (assert (null (loop for x being each external-symbol in "SB-MOP"
 119                     unless (or (not (fboundp x))
 120                                (eq x 'update-dependent)
 121                                (not (typep (fdefinition x) 'generic-function))
 122                                (> (length (generic-function-methods
 123                                            (fdefinition x)))
 124                                   0))
 125                     collect x)))
 126 \f
 127 ;;; make sure that ENSURE-CLASS-USING-CLASS's arguments are the right
 128 ;;; way round (!)
 129 (defvar *e-c-u-c-arg-order* nil)
 130 (defmethod ensure-class-using-class :after
 131     (class (name (eql 'e-c-u-c-arg-order)) &key &allow-other-keys)
 132   (setf *e-c-u-c-arg-order* t))
 133 (defclass e-c-u-c-arg-orderoid () ())
 134 (assert (null *e-c-u-c-arg-order*))
 135 (defclass e-c-u-c-arg-order () ())
 136 (assert (eq *e-c-u-c-arg-order* t))
 137 \f
 138 ;;; verify that FIND-CLASS works after FINALIZE-INHERITANCE
 139 (defclass automethod-class (standard-class) ())
 140 (defmethod validate-superclass ((c1 automethod-class) (c2 standard-class))
 141   t)
 142 (defmethod finalize-inheritance :after ((x automethod-class))
 143   (format t "~&~S ~S~%" x (find-class (class-name x))))
 144 (defclass automethod-object () ()
 145   (:metaclass automethod-class))
 146 (defvar *automethod-object* (make-instance 'automethod-object))
 147 (assert (typep *automethod-object* 'automethod-object))
 148 \f
 149 ;;; COMPUTE-EFFECTIVE-SLOT-DEFINITION should take three arguments, one
 150 ;;; of which is the name of the slot.
 151 (defvar *compute-effective-slot-definition-count* 0)
 152 (defmethod compute-effective-slot-definition :before
 153     (class (name (eql 'foo)) dsds)
 154   (incf *compute-effective-slot-definition-count*))
 155 (defclass cesd-test-class ()
 156   ((foo :initarg :foo)))
 157 (make-instance 'cesd-test-class :foo 3)
 158 ;;; FIXME: this assertion seems a little weak.  I don't know why
 159 ;;; COMPUTE-EFFECTIVE-SLOT-DEFINITION gets called twice in this
 160 ;;; sequence, nor whether that's compliant with AMOP.  -- CSR,
 161 ;;; 2003-04-17
 162 (assert (> *compute-effective-slot-definition-count* 0))
 163 \f
 164 ;;; this used to cause a nasty uncaught metacircularity in PCL.
 165 (defclass substandard-method (standard-method) ())
 166 (defgeneric substandard-defgeneric (x y)
 167   (:method-class substandard-method)
 168   (:method ((x number) (y number)) (+ x y))
 169   (:method ((x string) (y string)) (concatenate 'string x y)))
 170 (assert (= (substandard-defgeneric 1 2) 3))
 171 (assert (string= (substandard-defgeneric "1" "2") "12"))
 172 \f
 173 ;;;; success
 174 (sb-ext:quit :unix-status 104)