--- /dev/null
+(in-package :lol-test)
+
+(in-suite lisp-on-lines)
+
+(deftest test-define-display ()
+ (test-attribute-property-inheriting)
+
+ (deflayer test-display)
+
+ (define-display
+ :in-layer test-display ((description attribute-test-2))
+ (format *display* "BRILLANT!"))
+
+ (let ((before (display-using-description
+ (find-description 'attribute-test-2)
+ nil *object*)))
+ (with-active-layers (test-display)
+ (is (equalp "BRILLANT!" (display-using-description
+ (find-description 'attribute-test-2)
+ nil *object*))))))
+
\ No newline at end of file