X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Fclos.impure.lisp;h=cc43bc9879e072297032fdf7b05d44b31f162bcf;hb=e972550db41da8a21a89d0215670de70802bd3ee;hp=da5e1aa94c64303356e3c1be5964d7d3a62eb39f;hpb=3abdab003d4cdb02d7386dcd4bc8d9ac4dafb359;p=sbcl.git

diff --git a/tests/clos.impure.lisp b/tests/clos.impure.lisp
index da5e1aa..cc43bc9 100644
--- a/tests/clos.impure.lisp
+++ b/tests/clos.impure.lisp
@@ -700,5 +700,25 @@
                    (declare (notinline slot-value))
                    a))
 
+;;; from CLHS 7.6.5.1
+(defclass character-class () ((char :initarg :char)))
+(defclass picture-class () ((glyph :initarg :glyph)))
+(defclass character-picture-class (character-class picture-class) ())
+
+(defmethod width ((c character-class) &key font) font)
+(defmethod width ((p picture-class) &key pixel-size) pixel-size)
+
+(assert (raises-error? 
+	 (width (make-instance 'character-class :char #\Q) 
+		:font 'baskerville :pixel-size 10)
+	 program-error))
+(assert (raises-error?
+	 (width (make-instance 'picture-class :glyph #\Q)
+		:font 'baskerville :pixel-size 10)
+	 program-error))
+(assert (eq (width (make-instance 'character-picture-class :char #\Q)
+		   :font 'baskerville :pixel-size 10)
+	    'baskerville))
+
 ;;;; success
 (sb-ext:quit :unix-status 104)