;;;; miscellaneous side-effectful tests of the MOP ;;;; This software is part of the SBCL system. See the README file for ;;;; more information. ;;;; ;;;; While most of SBCL is derived from the CMU CL system, the test ;;;; files (like this one) were written from scratch after the fork ;;;; from CMU CL. ;;;; ;;;; This software is in the public domain and is provided with ;;;; absolutely no warranty. See the COPYING and CREDITS files for ;;;; more information. ;;;; Note that the MOP is not in an entirely supported state. ;;;; However, this seems a good a way as any of ensuring that we have ;;;; no regressions. (defpackage "MOP-TEST" (:use "CL" "SB-MOP")) (in-package "MOP-TEST") ;;; Readers for Class Metaobjects (pp. 212--214 of AMOP) (defclass red-herring (forward-ref) ()) (assert (null (class-direct-slots (find-class 'forward-ref)))) (assert (null (class-direct-default-initargs (find-class 'forward-ref)))) ;;; Readers for Generic Function Metaobjects (pp. 216--218 of AMOP) (defgeneric fn-with-odd-arg-precedence (a b c) (:argument-precedence-order b c a)) (assert (equal (generic-function-lambda-list #'fn-with-odd-arg-precedence) '(a b c))) (assert (equal (generic-function-argument-precedence-order #'fn-with-odd-arg-precedence) '(b c a))) ;;; Test for DOCUMENTATION's order, which was wrong until sbcl-0.7.8.39 (assert (equal (generic-function-argument-precedence-order #'documentation) (let ((ll (generic-function-lambda-list #'documentation))) (list (nth 1 ll) (nth 0 ll))))) (assert (null (generic-function-declarations #'fn-with-odd-arg-precedence))) (defgeneric gf-with-declarations (x) (declare (optimize (speed 3))) (declare (optimize (safety 0)))) (let ((decls (generic-function-declarations #'gf-with-declarations))) (assert (= (length decls) 2)) (assert (member '(optimize (speed 3)) decls :test #'equal)) (assert (member '(optimize (safety 0)) decls :test #'equal))) ;;; Readers for Slot Definition Metaobjects (pp. 221--224 of AMOP) ;;; Ensure that SLOT-DEFINITION-ALLOCATION returns :INSTANCE/:CLASS as ;;; appropriate. (defclass sdm-test-class () ((an-instance-slot :accessor an-instance-slot) (a-class-slot :allocation :class :accessor a-class-slot))) (dolist (m (list (list #'an-instance-slot :instance) (list #'a-class-slot :class))) (let ((methods (generic-function-methods (car m)))) (assert (= (length methods) 1)) (assert (eq (slot-definition-allocation (accessor-method-slot-definition (car methods))) (cadr m))))) ;;; Class Finalization Protocol (see section 5.5.2 of AMOP) (let ((finalized-count 0)) (defmethod finalize-inheritance :after ((x standard-class)) (incf finalized-count)) (defun get-count () finalized-count)) (defclass finalization-test-1 () ()) (make-instance 'finalization-test-1) (assert (= (get-count) 1)) (defclass finalization-test-2 (finalization-test-3) ()) (assert (= (get-count) 1)) (defclass finalization-test-3 () ()) (make-instance 'finalization-test-3) (assert (or (= (get-count) 2) (= (get-count) 3))) (make-instance 'finalization-test-2) (assert (= (get-count) 3)) ;;; Bits of FUNCALLABLE-STANDARD-CLASS are easy to break; make sure ;;; that it is at least possible to define classes with that as a ;;; metaclass. (defclass gf-class (standard-generic-function) () (:metaclass funcallable-standard-class)) (defgeneric g (a b c) (:generic-function-class gf-class)) ;;; until sbcl-0.7.12.47, PCL wasn't aware of some direct class ;;; relationships. These aren't necessarily true, but are probably ;;; not going to change often. (dolist (x '(number array sequence character symbol)) (assert (eq (car (class-direct-superclasses (find-class x))) (find-class t))) (assert (member (find-class x) (class-direct-subclasses (find-class t))))) ;;; the class-prototype of the NULL class used to be some weird ;;; standard-instance-like thing. Make sure it's actually NIL. ;;; ;;; (and FIXME: eventually turn this into asserting that the prototype ;;; of all built-in-classes is of the relevant type) (assert (null (class-prototype (find-class 'null)))) ;;; simple consistency checks for the SB-MOP package: all of the ;;; functionality specified in AMOP is in functions and classes: (assert (null (loop for x being each external-symbol in "SB-MOP" unless (or (fboundp x) (find-class x)) collect x))) ;;; and all generic functions in SB-MOP have at least one specified ;;; method, except for UPDATE-DEPENDENT (assert (null (loop for x being each external-symbol in "SB-MOP" unless (or (not (fboundp x)) (eq x 'update-dependent) (not (typep (fdefinition x) 'generic-function)) (> (length (generic-function-methods (fdefinition x))) 0)) collect x))) ;;; make sure that ENSURE-CLASS-USING-CLASS's arguments are the right ;;; way round (!) (defvar *e-c-u-c-arg-order* nil) (defmethod ensure-class-using-class :after (class (name (eql 'e-c-u-c-arg-order)) &key &allow-other-keys) (setf *e-c-u-c-arg-order* t)) (defclass e-c-u-c-arg-orderoid () ()) (assert (null *e-c-u-c-arg-order*)) (defclass e-c-u-c-arg-order () ()) (assert (eq *e-c-u-c-arg-order* t)) ;;; verify that FIND-CLASS works after FINALIZE-INHERITANCE (defclass automethod-class (standard-class) ()) (defmethod validate-superclass ((c1 automethod-class) (c2 standard-class)) t) (defmethod finalize-inheritance :after ((x automethod-class)) (format t "~&~S ~S~%" x (find-class (class-name x)))) (defclass automethod-object () () (:metaclass automethod-class)) (defvar *automethod-object* (make-instance 'automethod-object)) (assert (typep *automethod-object* 'automethod-object)) ;;; COMPUTE-EFFECTIVE-SLOT-DEFINITION should take three arguments, one ;;; of which is the name of the slot. (defvar *compute-effective-slot-definition-count* 0) (defmethod compute-effective-slot-definition :before (class (name (eql 'foo)) dsds) (incf *compute-effective-slot-definition-count*)) (defclass cesd-test-class () ((foo :initarg :foo))) (make-instance 'cesd-test-class :foo 3) ;;; FIXME: this assertion seems a little weak. I don't know why ;;; COMPUTE-EFFECTIVE-SLOT-DEFINITION gets called twice in this ;;; sequence, nor whether that's compliant with AMOP. -- CSR, ;;; 2003-04-17 (assert (> *compute-effective-slot-definition-count* 0)) ;;; this used to cause a nasty uncaught metacircularity in PCL. (defclass substandard-method (standard-method) ()) (defgeneric substandard-defgeneric (x y) (:method-class substandard-method) (:method ((x number) (y number)) (+ x y)) (:method ((x string) (y string)) (concatenate 'string x y))) (assert (= (substandard-defgeneric 1 2) 3)) (assert (string= (substandard-defgeneric "1" "2") "12")) (let* ((x (find-class 'pathname)) (xs (class-direct-subclasses x))) (assert (>= (length xs) 1)) (assert (member (find-class 'logical-pathname) xs))) ;;; BUG 338: "MOP specializers as type specifiers" ;;; (reported by Bruno Haible sbcl-devel 2004-06-11) (let* ((m (defmethod eql-specialized-method ((x (eql 4.0))) 3.0)) (spec (first (sb-mop:method-specializers m)))) (assert (not (typep 1 spec))) (assert (typep 4.0 spec))) ;;; BUG #334, relating to programmatic addition of slots to a class ;;; with COMPUTE-SLOTS. ;;; ;;; FIXME: the DUMMY classes here are to prevent class finalization ;;; before the compute-slots method is around. This should probably ;;; be done by defining the COMPUTE-SLOTS methods on a metaclass, ;;; which can be defined before. ;;; ;;; a. adding an :allocation :instance slot (defclass class-to-add-instance-slot (dummy-ctais) ()) (defmethod compute-slots ((c (eql (find-class 'class-to-add-instance-slot)))) (append (call-next-method) (list (make-instance 'standard-effective-slot-definition :name 'y :allocation :instance)))) (defclass dummy-ctais () ((x :allocation :class))) (assert (equal (mapcar #'slot-definition-allocation (class-slots (find-class 'class-to-add-instance-slot))) ;; FIXME: is the order really guaranteed? '(:class :instance))) (assert (typep (slot-definition-location (cadr (class-slots (find-class 'class-to-add-instance-slot)))) 'unsigned-byte)) #| (assert (typep (slot-definition-location (car ...)) '???)) |# (let ((x (make-instance 'class-to-add-instance-slot))) (assert (not (slot-boundp x 'x))) (setf (slot-value x 'x) t) (assert (not (slot-boundp x 'y))) (setf (slot-value x 'y) 1) (assert (= 1 (slot-value x 'y)))) (let ((x (make-instance 'class-to-add-instance-slot))) (assert (slot-boundp x 'x)) (assert (eq t (slot-value x 'x))) (assert (not (slot-boundp x 'y)))) ;;; b. adding an :allocation :class slot (defclass class-to-add-class-slot (dummy-ctacs) ()) (defmethod compute-slots ((c (eql (find-class 'class-to-add-class-slot)))) (append (call-next-method) (list (make-instance 'standard-effective-slot-definition :name 'y :allocation :class)))) (defclass dummy-ctacs () ((x :allocation :class))) (assert (equal (mapcar #'slot-definition-allocation (class-slots (find-class 'class-to-add-class-slot))) '(:class :class))) (let ((x (make-instance 'class-to-add-class-slot))) (assert (not (slot-boundp x 'x))) (setf (slot-value x 'x) nil) (assert (not (slot-boundp x 'y))) (setf (slot-value x 'y) 1) (assert (= 1 (slot-value x 'y)))) (let ((x (make-instance 'class-to-add-class-slot))) (assert (slot-boundp x 'x)) (assert (eq nil (slot-value x 'x))) (assert (slot-boundp x 'y)) (assert (= 1 (slot-value x 'y)))) ;;; extra paranoia: check that we haven't broken the instance-slot class (let ((x (make-instance 'class-to-add-instance-slot))) (assert (slot-boundp x 'x)) (assert (eq t (slot-value x 'x))) (assert (not (slot-boundp x 'y)))) ;;;; the CTOR optimization was insufficiently careful about its ;;;; assumptions: firstly, it failed with a failed AVER for ;;;; non-standard-allocation slots: (defclass class-with-frob-slot () ((frob-slot :initarg :frob-slot :allocation :frob))) (handler-case (funcall (compile nil '(lambda () (make-instance 'class-with-frob-slot :frob-slot 1)))) (sb-int:bug (c) (error c)) (error () "Probably OK: haven't implemented SLOT-BOUNDP-USING-CLASS")) ;;; secondly, it failed to take account of the fact that we might wish ;;; to customize (setf slot-value-using-class) (defclass class-with-special-ssvuc () ((some-slot :initarg :some-slot))) (defvar *special-ssvuc-counter* 0) (defmethod (setf slot-value-using-class) :before (new-value class (instance class-with-special-ssvuc) slotd) (incf *special-ssvuc-counter*)) (let ((fun (compile nil '(lambda () (make-instance 'class-with-special-ssvuc :some-slot 1))))) (assert (= *special-ssvuc-counter* 0)) (funcall fun) (assert (= *special-ssvuc-counter* 1)) (funcall fun) (assert (= *special-ssvuc-counter* 2))) ;;; and now with the customization after running the function once (defclass class-with-special-ssvuc-2 () ((some-slot :initarg :some-slot))) (defvar *special-ssvuc-counter-2* 0) (let ((fun (compile nil '(lambda () (make-instance 'class-with-special-ssvuc-2 :some-slot 1))))) (assert (= *special-ssvuc-counter-2* 0)) (funcall fun) (assert (= *special-ssvuc-counter-2* 0)) (defmethod (setf slot-value-using-class) :before (new-value class (instance class-with-special-ssvuc-2) slotd) (incf *special-ssvuc-counter-2*)) (funcall fun) (assert (= *special-ssvuc-counter-2* 1))) ;;; vicious metacycle detection and resolution wasn't good enough: it ;;; didn't take account that the slots (and hence the slot readers) ;;; might be inherited from superclasses. This example, due to Bruno ;;; Haible, also tests programmatic addition of accessors. (defclass auto-accessors-direct-slot-definition-class (standard-class) ((containing-class-name :initarg :containing-class-name))) (defmethod validate-superclass ((c1 auto-accessors-direct-slot-definition-class) (c2 standard-class)) t) (defclass auto-accessors-class (standard-class) ()) (defmethod direct-slot-definition-class ((class auto-accessors-class) &rest initargs) (let ((dsd-class-name (gensym))) (sb-pcl:ensure-class dsd-class-name :metaclass 'auto-accessors-direct-slot-definition-class :direct-superclasses (list (find-class 'standard-direct-slot-definition)) :containing-class-name (class-name class)) (eval `(defmethod initialize-instance :after ((dsd ,dsd-class-name) &rest args) (when (and (null (slot-definition-readers dsd)) (null (slot-definition-writers dsd))) (let* ((containing-class-name (slot-value (class-of dsd) 'containing-class-name)) (accessor-name (intern (concatenate 'string (symbol-name containing-class-name) "-" (symbol-name (slot-definition-name dsd))) (symbol-package containing-class-name)))) (setf (slot-definition-readers dsd) (list accessor-name)) (setf (slot-definition-writers dsd) (list (list 'setf accessor-name))))))) (find-class dsd-class-name))) (defmethod validate-superclass ((c1 auto-accessors-class) (c2 standard-class)) t) (defclass testclass15 () ((x :initarg :x) (y)) (:metaclass auto-accessors-class)) (let ((inst (make-instance 'testclass15 :x 12))) (assert (equal (list (testclass15-x inst) (setf (testclass15-y inst) 13)) '(12 13)))) ;;;; success (sb-ext:quit :unix-status 104)