1 ;;;; miscellaneous side-effectful tests of CLOS
3 ;;;; This software is part of the SBCL system. See the README file for
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
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.
14 (load "assertoid.lisp")
16 (defpackage "CLOS-IMPURE"
17 (:use
"CL" "ASSERTOID"))
18 (in-package "CLOS-IMPURE")
20 ;;; It should be possible to do DEFGENERIC and DEFMETHOD referring to
21 ;;; structure types defined earlier in the file.
22 (defstruct struct-a x y
)
23 (defstruct struct-b x y z
)
24 (defmethod wiggle ((a struct-a
))
27 (defgeneric jiggle
(arg))
28 (defmethod jiggle ((a struct-a
))
31 (defmethod jiggle ((b struct-b
))
35 (assert (= (wiggle (make-struct-a :x
6 :y
5))
36 (jiggle (make-struct-b :x
19 :y
6 :z
2))))
38 ;;; Compiling DEFGENERIC should prevent "undefined function" style
39 ;;; warnings from code within the same file.
40 (defgeneric gf-defined-in-this-file
(x y
))
41 (defun function-using-gf-defined-in-this-file (x y n
)
43 (gf-defined-in-this-file x y
)))
45 ;;; Until Martin Atzmueller ported Pierre Mai's CMU CL fixes in
46 ;;; sbcl-0.6.12.25, the implementation of NO-APPLICABLE-METHOD was
47 ;;; broken in such a way that the code here would signal an error.
48 (defgeneric zut-n-a-m
(a b c
))
49 (defmethod no-applicable-method ((zut-n-a-m (eql #'zut-n-a-m
)) &rest args
)
50 (format t
"~&No applicable method for ZUT-N-A-M ~S, yet.~%" args
))
53 ;;; bug reported and fixed by Alexey Dejneka sbcl-devel 2001-09-10:
54 ;;; This DEFGENERIC shouldn't cause an error.
55 (defgeneric ad-gf
(a) (:method
:around
(x) x
))
57 ;;; DEFGENERIC and DEFMETHOD shouldn't accept &REST when it's not
58 ;;; followed by a variable:
59 ;;; e.g. (DEFMETHOD FOO ((X T) &REST) NIL) should signal an error.
60 (eval-when (:load-toplevel
:compile-toplevel
:execute
)
61 (defmacro expect-error
(&body body
)
62 `(multiple-value-bind (res condition
)
63 (ignore-errors (progn ,@body
))
64 (declare (ignore res
))
65 (typep condition
'error
))))
68 '(defmethod foo0 ((x t
) &rest
) nil
))))
69 (assert (expect-error (defgeneric foo1
(x &rest
))))
70 (assert (expect-error (defgeneric foo2
(x a
&rest
))))
71 (defgeneric foo3
(x &rest y
))
72 (defmethod foo3 ((x t
) &rest y
) nil
)
73 (defmethod foo4 ((x t
) &key y
&rest z
) nil
)
74 (defgeneric foo4
(x &rest z
&key y
))
75 (assert (expect-error (defgeneric foo5
(x &rest
))))
76 (assert (expect-error (macroexpand-1 '(defmethod foo6 (x &rest
)))))
78 ;;; more lambda-list checking
80 ;;; DEFGENERIC lambda lists are subject to various limitations, as per
81 ;;; section 3.4.2 of the ANSI spec. Since Alexey Dejneka's patch for
82 ;;; bug 191-b ca. sbcl-0.7.22, these limitations should be enforced.
83 (labels ((coerce-to-boolean (x)
85 (%like-or-dislike
(expr expected-failure-p
)
86 (declare (type boolean expected-failure-p
))
87 (format t
"~&trying ~S~%" expr
)
88 (multiple-value-bind (fun warnings-p failure-p
)
92 (declare (ignore fun
))
93 ;; In principle the constraint on WARNINGS-P below seems
94 ;; reasonable, but in practice we get warnings about
95 ;; undefined functions from the DEFGENERICs, apparently
96 ;; because the DECLAIMs which ordinarily prevent such
97 ;; warnings don't take effect because EVAL-WHEN
98 ;; (:COMPILE-TOPLEVEL) loses its magic when compiled
99 ;; within a LAMBDA. So maybe we can't test WARNINGS-P
101 ;;(unless expected-failure-p
102 ;; (assert (not warnings-p)))
103 (assert (eq (coerce-to-boolean failure-p
) expected-failure-p
))))
105 (%like-or-dislike expr nil
))
107 (%like-or-dislike expr t
)))
109 (dislike '(defgeneric gf-for-ll-test-0
("a" #p
"b")))
110 (like '(defgeneric gf-for-ll-test-1
()))
111 (like '(defgeneric gf-for-ll-test-2
(x)))
112 ;; forbidden default or supplied-p for &OPTIONAL or &KEY arguments
113 (dislike '(defgeneric gf-for-ll-test-3
(x &optional
(y 0))))
114 (like '(defgeneric gf-for-ll-test-4
(x &optional y
)))
115 (dislike '(defgeneric gf-for-ll-test-5
(x y
&key
(z :z z-p
))))
116 (like '(defgeneric gf-for-ll-test-6
(x y
&key z
)))
117 (dislike '(defgeneric gf-for-ll-test-7
(x &optional
(y 0) &key z
)))
118 (like '(defgeneric gf-for-ll-test-8
(x &optional y
&key z
)))
119 (dislike '(defgeneric gf-for-ll-test-9
(x &optional y
&key
(z :z
))))
120 (like '(defgeneric gf-for-ll-test-10
(x &optional y
&key z
)))
121 (dislike '(defgeneric gf-for-ll-test-11
(&optional
&key
(k :k k-p
))))
122 (like '(defgeneric gf-for-ll-test-12
(&optional
&key k
)))
124 (dislike '(defgeneric gf-for-ll-test-13
(x y z
&optional a
&aux g h
)))
125 (like '(defgeneric gf-for-ll-test-14
(x y z
&optional a
)))
126 (dislike '(defgeneric gf-for-ll-test-bare-aux-1
(x &aux
)))
127 (like '(defgeneric gf-for-ll-test-bare-aux-2
(x)))
128 ;; also can't use bogoDEFMETHODish type-qualifier-ish decorations
129 ;; on required arguments
130 (dislike '(defgeneric gf-for-11-test-15
((arg t
))))
131 (like '(defgeneric gf-for-11-test-16
(arg))))
133 ;;; structure-class tests setup
134 (defclass structure-class-foo1
() () (:metaclass cl
:structure-class
))
135 (defclass structure-class-foo2
(structure-class-foo1)
136 () (:metaclass cl
:structure-class
))
138 ;;; standard-class tests setup
139 (defclass standard-class-foo1
() () (:metaclass cl
:standard-class
))
140 (defclass standard-class-foo2
(standard-class-foo1)
141 () (:metaclass cl
:standard-class
))
143 (assert (typep (class-of (make-instance 'structure-class-foo1
))
145 (assert (typep (make-instance 'structure-class-foo1
) 'structure-class-foo1
))
146 (assert (typep (make-instance 'standard-class-foo1
) 'standard-class-foo1
))
148 ;;; DEFGENERIC's blow-away-old-methods behavior is specified to have
149 ;;; special hacks to distinguish between defined-with-DEFGENERIC-:METHOD
150 ;;; methods and defined-with-DEFMETHOD methods, so that reLOADing
151 ;;; DEFGENERIC-containing files does the right thing instead of
152 ;;; randomly slicing your generic functions. (APD made this work
153 ;;; in sbcl-0.7.0.2.)
154 (defgeneric born-to-be-redefined
(x)
155 (:method
((x integer
))
157 (defmethod born-to-be-redefined ((x real
))
159 (assert (eq (born-to-be-redefined 1) 'integer
))
160 (defgeneric born-to-be-redefined
(x))
161 (assert (eq (born-to-be-redefined 1) 'real
)) ; failed until sbcl-0.7.0.2
162 (defgeneric born-to-be-redefined
(x)
163 (:method
((x integer
))
165 (defmethod born-to-be-redefined ((x integer
))
167 (assert (eq (born-to-be-redefined 1) 'int
))
168 (defgeneric born-to-be-redefined
(x))
169 (assert (eq (born-to-be-redefined 1) 'int
))
171 ;;; In the removal of ITERATE from SB-PCL, a bug was introduced
172 ;;; preventing forward-references and also change-class (which
173 ;;; forward-references used interally) from working properly. One
174 ;;; symptom was reported by Brian Spilsbury (sbcl-devel 2002-04-08),
175 ;;; and another on IRC by Dan Barlow simultaneously. Better check
176 ;;; that it doesn't happen again.
178 ;;; First, the forward references:
179 (defclass forward-ref-a
(forward-ref-b) ())
180 (defclass forward-ref-b
() ())
181 ;;; (a couple more complicated examples found by Paul Dietz' test
183 (defclass forward-ref-c1
(forward-ref-c2) ())
184 (defclass forward-ref-c2
(forward-ref-c3) ())
186 (defclass forward-ref-d1
(forward-ref-d2 forward-ref-d3
) ())
187 (defclass forward-ref-d2
(forward-ref-d4 forward-ref-d5
) ())
189 ;;; Then change-class
190 (defclass class-with-slots
()
191 ((a-slot :initarg
:a-slot
:accessor a-slot
)
192 (b-slot :initarg
:b-slot
:accessor b-slot
)
193 (c-slot :initarg
:c-slot
:accessor c-slot
)))
194 (let ((foo (make-instance 'class-with-slots
198 (let ((bar (change-class foo
'class-with-slots
)))
199 (assert (= (a-slot bar
) 1))
200 (assert (= (b-slot bar
) 2))
201 (assert (= (c-slot bar
) 3))))
203 ;;; some more CHANGE-CLASS testing, now that we have an ANSI-compliant
204 ;;; version (thanks to Espen Johnsen)
205 (defclass from-class
()
206 ((foo :initarg
:foo
:accessor foo
)))
207 (defclass to-class
()
208 ((foo :initarg
:foo
:accessor foo
)
209 (bar :initarg
:bar
:accessor bar
)))
210 (let* ((from (make-instance 'from-class
:foo
1))
211 (to (change-class from
'to-class
:bar
2)))
212 (assert (= (foo to
) 1))
213 (assert (= (bar to
) 2)))
215 ;;; Until Pierre Mai's patch (sbcl-devel 2002-06-18, merged in
216 ;;; sbcl-0.7.4.39) the :MOST-SPECIFIC-LAST option had no effect.
217 (defgeneric bug180
(x)
218 (:method-combination list
:most-specific-last
))
219 (defmethod bug180 list
((x number
))
221 (defmethod bug180 list
((x fixnum
))
223 (assert (equal (bug180 14) '(number fixnum
)))
225 ;;; printing a structure class should not loop indefinitely (or cause
226 ;;; a stack overflow):
227 (defclass test-printing-structure-class
()
228 ((slot :initarg
:slot
))
229 (:metaclass structure-class
))
230 (print (make-instance 'test-printing-structure-class
:slot
2))
232 ;;; structure-classes should behave nicely when subclassed
233 (defclass super-structure
()
234 ((a :initarg
:a
:accessor a-accessor
)
235 (b :initform
2 :reader b-reader
))
236 (:metaclass structure-class
))
237 (defclass sub-structure
(super-structure)
238 ((c :initarg
:c
:writer c-writer
:accessor c-accessor
))
239 (:metaclass structure-class
))
240 (let ((foo (make-instance 'sub-structure
:a
1 :c
3)))
241 (assert (= (a-accessor foo
) 1))
242 (assert (= (b-reader foo
) 2))
243 (assert (= (c-accessor foo
) 3))
244 (setf (a-accessor foo
) 4)
246 (assert (= (a-accessor foo
) 4))
247 (assert (= (c-accessor foo
) 5)))
249 ;;; At least as of sbcl-0.7.4, PCL has code to support a special
250 ;;; encoding of effective method functions for slot accessors as
251 ;;; FIXNUMs. Given this special casing, it'd be easy for slot accessor
252 ;;; functions to get broken in special ways even though ordinary
253 ;;; generic functions work. As of sbcl-0.7.4 we didn't have any tests
254 ;;; for that possibility. Now we have a few tests:
256 ((fin :reader ffin
:writer ffin
!)
257 (tail :reader ftail
:writer ftail
!)))
258 (defvar *fish
* (make-instance 'fish
))
259 (ffin! 'triangular-fin
*fish
*)
260 (defclass cod
(fish) ())
261 (defvar *cod
* (make-instance 'cod
))
262 (defparameter *clos-dispatch-side-fx
* (make-array 0 :fill-pointer
0))
263 (defmethod ffin! (new-fin (cod cod
))
264 (format t
"~&about to set ~S fin to ~S~%" cod new-fin
)
265 (vector-push-extend '(cod) *clos-dispatch-side-fx
*)
268 (format t
"~&done setting ~S fin to ~S~%" cod new-fin
)))
269 (defmethod ffin! :before
(new-fin (cod cod
))
270 (vector-push-extend '(:before cod
) *clos-dispatch-side-fx
*)
271 (format t
"~&exploring the CLOS dispatch zoo with COD fins~%"))
272 (ffin! 'almost-triang-fin
*cod
*)
273 (assert (eq (ffin *cod
*) 'almost-triang-fin
))
274 (assert (equalp #((:before cod
) (cod)) *clos-dispatch-side-fx
*))
276 ;;; Until sbcl-0.7.6.21, the long form of DEFINE-METHOD-COMBINATION
277 ;;; ignored its options; Gerd Moellmann found and fixed the problem
278 ;;; for cmucl (cmucl-imp 2002-06-18).
279 (define-method-combination test-mc
(x)
280 ;; X above being a method-group-specifier
281 ((primary () :required t
))
282 `(call-method ,(first primary
)))
285 (:method-combination test-mc
1))
290 ;;; Until sbcl-0.7.7.20, some conditions weren't being signalled, and
291 ;;; some others were of the wrong type:
292 (macrolet ((assert-program-error (form)
293 `(multiple-value-bind (value error
)
294 (ignore-errors ,form
)
295 (assert (null value
))
296 (assert (typep error
'program-error
)))))
297 (assert-program-error (defclass foo001
() (a b a
)))
298 (assert-program-error (defclass foo002
()
300 (:default-initargs x
'a x
'b
)))
301 (assert-program-error (defclass foo003
()
302 ((a :allocation
:class
:allocation
:class
))))
303 (assert-program-error (defclass foo004
()
305 ;; and some more, found by Wolfhard Buss and fixed for cmucl by Gerd
306 ;; Moellmann in sbcl-0.7.8.x:
307 (assert-program-error (progn
308 (defmethod odd-key-args-checking (&key
(key 42)) key
)
309 (odd-key-args-checking 3)))
310 (assert (= (odd-key-args-checking) 42))
311 (assert (eq (odd-key-args-checking :key t
) t
))
312 ;; yet some more, fixed in sbcl-0.7.9.xx
313 (assert-program-error (defclass foo005
()
314 (:metaclass sb-pcl
::funcallable-standard-class
)
316 (assert-program-error (defclass foo006
()
317 ((a :reader
(setf a
)))))
318 (assert-program-error (defclass foo007
()
320 (assert-program-error (defclass foo008
()
322 (:default-initargs
:a
1)
323 (:default-initargs
:a
2))))
325 ;;; DOCUMENTATION's argument-precedence-order wasn't being faithfully
326 ;;; preserved through the bootstrap process until sbcl-0.7.8.39.
327 ;;; (thanks to Gerd Moellmann)
328 (let ((answer (documentation '+ 'function
)))
329 (assert (stringp answer
))
330 (defmethod documentation ((x (eql '+)) y
) "WRONG")
331 (assert (string= (documentation '+ 'function
) answer
)))
333 ;;; only certain declarations are permitted in DEFGENERIC
334 (macrolet ((assert-program-error (form)
335 `(multiple-value-bind (value error
)
336 (ignore-errors ,form
)
337 (assert (null value
))
338 (assert (typep error
'program-error
)))))
339 (assert-program-error (defgeneric bogus-declaration
(x)
340 (declare (special y
))))
341 (assert-program-error (defgeneric bogus-declaration2
(x)
342 (declare (notinline concatenate
)))))
343 ;;; CALL-NEXT-METHOD should call NO-NEXT-METHOD if there is no next
345 (defmethod no-next-method-test ((x integer
)) (call-next-method))
346 (assert (null (ignore-errors (no-next-method-test 1))))
347 (defmethod no-next-method ((g (eql #'no-next-method-test
)) m
&rest args
)
349 (assert (eq (no-next-method-test 1) 'success
))
350 (assert (null (ignore-errors (no-next-method-test 'foo
))))
352 ;;; regression test for bug 176, following a fix that seems
353 ;;; simultaneously to fix 140 while not exposing 176 (by Gerd
354 ;;; Moellmann, merged in sbcl-0.7.9.12).
356 (let ((lastname (intern (format nil
"C176-~D" (1- i
))))
357 (name (intern (format nil
"C176-~D" i
))))
358 (eval `(defclass ,name
359 (,@(if (= i
0) nil
(list lastname
)))
361 (eval `(defmethod initialize-instance :after
((x ,name
) &rest any
)
362 (declare (ignore any
))))))
363 (defclass b176
() (aslot-176))
364 (defclass c176-0
(b176) ())
365 (assert (= 1 (setf (slot-value (make-instance 'c176-9
) 'aslot-176
) 1)))
367 ;;; DEFINE-METHOD-COMBINATION was over-eager at checking for duplicate
369 (define-method-combination dmc-test-mc
(&optional
(order :most-specific-first
))
371 (primary (dmc-test-mc) :order order
:required t
))
372 (let ((form (if (rest primary
)
373 `(and ,@(mapcar #'(lambda (method)
374 `(call-method ,method
))
376 `(call-method ,(first primary
)))))
378 `(call-method ,(first around
)
380 (make-method ,form
)))
383 (defgeneric dmc-test-mc
(&key k
)
384 (:method-combination dmc-test-mc
))
386 (defmethod dmc-test-mc dmc-test-mc
(&key k
)
390 ;;; While I'm at it, DEFINE-METHOD-COMBINATION is defined to return
391 ;;; the NAME argument, not some random method object. So:
392 (assert (eq (define-method-combination dmc-test-return-foo
)
393 'dmc-test-return-foo
))
394 (assert (eq (define-method-combination dmc-test-return-bar
:operator and
)
395 'dmc-test-return-bar
))
396 (assert (eq (define-method-combination dmc-test-return
397 (&optional
(order :most-specific-first
))
399 (primary (dmc-test-return) :order order
:required t
))
400 (let ((form (if (rest primary
)
401 `(and ,@(mapcar #'(lambda (method)
402 `(call-method ,method
))
404 `(call-method ,(first primary
)))))
406 `(call-method ,(first around
)
408 (make-method ,form
)))
412 ;;; DEFMETHOD should signal a PROGRAM-ERROR if an incompatible lambda
414 (defmethod incompatible-ll-test-1 (x) x
)
415 (multiple-value-bind (result error
)
416 (ignore-errors (defmethod incompatible-ll-test-1 (x y
) y
))
417 (assert (null result
))
418 (assert (typep error
'program-error
)))
419 (multiple-value-bind (result error
)
420 (ignore-errors (defmethod incompatible-ll-test-1 (x &rest y
) y
))
421 (assert (null result
))
422 (assert (typep error
'program-error
)))
423 ;;; Sneakily using a bit of MOPness to check some consistency
425 (sb-pcl:generic-function-methods
#'incompatible-ll-test-1
)) 1))
427 (defmethod incompatible-ll-test-2 (x &key bar
) bar
)
428 (multiple-value-bind (result error
)
429 (ignore-errors (defmethod incompatible-ll-test-2 (x) x
))
430 (assert (null result
))
431 (assert (typep error
'program-error
)))
432 (defmethod incompatible-ll-test-2 (x &rest y
) y
)
434 (sb-pcl:generic-function-methods
#'incompatible-ll-test-2
)) 1))
435 (defmethod incompatible-ll-test-2 ((x integer
) &key bar
) bar
)
437 (sb-pcl:generic-function-methods
#'incompatible-ll-test-2
)) 2))
438 (assert (equal (incompatible-ll-test-2 t
1 2) '(1 2)))
439 (assert (eq (incompatible-ll-test-2 1 :bar
'yes
) 'yes
))
441 ;;; Attempting to instantiate classes with forward references in their
442 ;;; CPL should signal errors (FIXME: of what type?)
443 (defclass never-finished-class
(this-one-unfinished-too) ())
444 (multiple-value-bind (result error
)
445 (ignore-errors (make-instance 'never-finished-class
))
446 (assert (null result
))
447 (assert (typep error
'error
)))
448 (multiple-value-bind (result error
)
449 (ignore-errors (make-instance 'this-one-unfinished-too
))
450 (assert (null result
))
451 (assert (typep error
'error
)))
453 ;;; Classes with :ALLOCATION :CLASS slots should be subclassable (and
454 ;;; weren't for a while in sbcl-0.7.9.xx)
455 (defclass superclass-with-slot
()
456 ((a :allocation
:class
)))
457 (defclass subclass-for-class-allocation
(superclass-with-slot) ())
458 (make-instance 'subclass-for-class-allocation
)
460 ;;; bug #136: CALL-NEXT-METHOD was being a little too lexical,
461 ;;; resulting in failure in the following:
462 (defmethod call-next-method-lexical-args ((x integer
))
464 (defmethod call-next-method-lexical-args :around
((x integer
))
467 (assert (= (call-next-method-lexical-args 3) 3))
469 ;;; DEFINE-METHOD-COMBINATION with arguments was hopelessly broken
471 (defvar *d-m-c-args-test
* nil
)
472 (define-method-combination progn-with-lock
()
476 (progn (lock (object-lock ,object
))
477 ,@(mapcar #'(lambda (method)
478 `(call-method ,method
))
480 (unlock (object-lock ,object
))))
481 (defun object-lock (obj)
482 (push "object-lock" *d-m-c-args-test
*)
485 (push "unlock" *d-m-c-args-test
*)
488 (push "lock" *d-m-c-args-test
*)
490 (defgeneric d-m-c-args-test
(x)
491 (:method-combination progn-with-lock
))
492 (defmethod d-m-c-args-test ((x symbol
))
493 (push "primary" *d-m-c-args-test
*))
494 (defmethod d-m-c-args-test ((x number
))
496 (assert (equal (d-m-c-args-test t
) '("primary" "lock" "object-lock")))
497 (assert (equal *d-m-c-args-test
*
498 '("unlock" "object-lock" "primary" "lock" "object-lock")))
499 (setf *d-m-c-args-test
* nil
)
500 (ignore-errors (d-m-c-args-test 1))
501 (assert (equal *d-m-c-args-test
*
502 '("unlock" "object-lock" "lock" "object-lock")))
504 ;;; The walker (on which DEFMETHOD depended) didn't know how to handle
505 ;;; SYMBOL-MACROLET properly. In fact, as of sbcl-0.7.10.20 it still
506 ;;; doesn't, but it does well enough to compile the following without
507 ;;; error (the problems remain in asking for a complete macroexpansion
508 ;;; of an arbitrary form).
509 (symbol-macrolet ((x 1))
510 (defmethod bug222 (z)
511 (macrolet ((frob (form) `(progn ,form
,x
)))
513 (assert (= (bug222 t
) 1))
515 ;;; also, a test case to guard against bogus environment hacking:
516 (eval-when (:compile-toplevel
:load-toplevel
:execute
)
518 ;;; this should at the least compile:
520 (defmethod bug222-b (z stream
)
521 (macrolet ((frob (form) `(progn ,form
,bug222-b
)))
522 (frob (format stream
"~D~%" bug222-b
)))))
523 ;;; and it would be nice (though not specified by ANSI) if the answer
525 (let ((x (make-string-output-stream)))
526 ;; not specified by ANSI
527 (assert (= (bug222-b t x
) 3))
529 (assert (char= (char (get-output-stream-string x
) 0) #\
1)))
531 ;;; REINITIALIZE-INSTANCE, in the ctor optimization, wasn't checking
532 ;;; for invalid initargs where it should:
533 (defclass class234
() ())
534 (defclass subclass234
(class234) ())
537 (reinitialize-instance (make-instance 'class234
) :dummy
0))
539 (reinitialize-instance (make-instance 'subclass234
) :dummy
0))
540 (assert (raises-error?
(bug-234) program-error
))
541 (defmethod shared-initialize :after
((i class234
) slots
&key dummy
)
543 (assert (typep (subbug-234) 'subclass234
))
545 ;; once for MAKE-INSTANCE, once for REINITIALIZE-INSTANCE
548 ;;; also, some combinations of MAKE-INSTANCE and subclassing missed
549 ;;; new methods (Gerd Moellmann sbcl-devel 2002-12-29):
550 (defclass class234-b1
() ())
551 (defclass class234-b2
(class234-b1) ())
552 (defvar *bug234-b
* 0)
554 (make-instance 'class234-b2
))
557 (assert (= *bug234-b
* 0))
558 (defmethod initialize-instance :before
((x class234-b1
) &rest args
)
559 (declare (ignore args
))
562 (assert (= *bug234-b
* 1))
564 ;;; we should be able to make classes with uninterned names:
565 (defclass #:class-with-uninterned-name
() ())
567 ;;; SLOT-MISSING should be called when there are missing slots.
568 (defclass class-with-all-slots-missing
() ())
569 (defmethod slot-missing (class (o class-with-all-slots-missing
)
573 (assert (eq (slot-value (make-instance 'class-with-all-slots-missing
) 'foo
)
575 (assert (eq (funcall (lambda (x) (slot-value x
'bar
))
576 (make-instance 'class-with-all-slots-missing
))
578 (assert (eq (funcall (lambda (x) (setf (slot-value x
'baz
) 'baz
))
579 (make-instance 'class-with-all-slots-missing
))
582 ;;; we should be able to specialize on anything that names a class.
583 (defclass name-for-class
() ())
584 (defmethod something-that-specializes ((x name-for-class
)) 1)
585 (setf (find-class 'other-name-for-class
) (find-class 'name-for-class
))
586 (defmethod something-that-specializes ((x other-name-for-class
)) 2)
587 (assert (= (something-that-specializes (make-instance 'name-for-class
)) 2))
588 (assert (= (something-that-specializes (make-instance 'other-name-for-class
))
591 ;;; more forward referenced classes stuff
592 (defclass frc-1
(frc-2) ())
593 (assert (subtypep 'frc-1
(find-class 'frc-2
)))
594 (assert (subtypep (find-class 'frc-1
) 'frc-2
))
595 (assert (not (subtypep (find-class 'frc-2
) 'frc-1
)))
596 (defclass frc-2
(frc-3) ((a :initarg
:a
)))
597 (assert (subtypep 'frc-1
(find-class 'frc-3
)))
598 (defclass frc-3
() ())
599 (assert (typep (make-instance 'frc-1
:a
2) (find-class 'frc-1
)))
600 (assert (typep (make-instance 'frc-2
:a
3) (find-class 'frc-2
)))
602 ;;; check that we can define classes with two slots of different names
603 ;;; (even if it STYLE-WARNs).
604 (defclass odd-name-class
()
605 ((name :initarg
:name
)
606 (cl-user::name
:initarg
:name2
)))
607 (let ((x (make-instance 'odd-name-class
:name
1 :name2
2)))
608 (assert (= (slot-value x
'name
) 1))
609 (assert (= (slot-value x
'cl-user
::name
) 2)))
612 (sb-ext:quit
:unix-status
104)