diff --git a/collects/tests/mred/dc.ss b/collects/tests/mred/dc.ss
new file mode 100644
index 00000000..b5a8123e
--- /dev/null
+++ b/collects/tests/mred/dc.ss
@@ -0,0 +1,72 @@
+(when (not (defined? 'test))
+  (load-relative "testing.ss"))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;                               DC Tests                                     ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(define mdc (make-object bitmap-dc%))
+(define bm (make-object bitmap% 10 10))
+
+(define (bad m . args)
+  (with-handlers ([exn:application:mismatch?
+		   (lambda (x)
+		     (test '("ok")
+			   `(send <bad-dc> ,m ...)
+			   (regexp-match "ok" (exn-message x))))])
+    (apply (ivar/proc mdc m) args)
+    (error 'bad-dc "~a shouldn't succeed" `(send <bad-dc> ,m ...))))
+
+(define (test-all mdc try)
+  (try 'clear)
+  (try 'draw-arc 0 0 10 10 0.1 0.2)
+  (try 'draw-bitmap bm 0 0)
+  (try 'draw-bitmap-section bm 0 0 0 0 5 5)
+  (try 'draw-ellipse 0 0 10 10)
+  (try 'draw-line 0 0 10 10)
+  (try 'draw-lines (list (make-object point% 0 0) (make-object point% 10 10)))
+  (try 'draw-point 5 5)
+  (try 'draw-polygon (list (make-object point% 0 0) (make-object point% 10 10) (make-object point% 5 10)))
+  (try 'draw-rectangle 0 0 10 10)
+  (try 'draw-rounded-rectangle 0 0 10 10)
+  (try 'draw-spline 0 0 10 10 5 10)
+  (try 'draw-text "Hello" 0 0)
+
+  (try 'start-doc "Ok")
+  (try 'start-page)
+  (try 'end-page)
+  (try 'end-doc)
+
+  (try 'get-background)
+  (try 'get-brush)
+  (try 'get-char-height)
+  (try 'get-char-width)
+  (try 'get-clipping-region)
+  (try 'get-font)
+  (try 'get-pen)
+  (try 'get-size)
+  (try 'get-text-background)
+  (try 'get-text-extent "Hello")
+  (try 'get-text-foreground)
+  (try 'get-text-mode)
+
+  (try 'set-background (make-object color% "Yellow"))
+  (try 'set-brush (make-object brush% "Yellow" 'solid))
+  (try 'set-clipping-rect 0 0 10 10)
+  (try 'set-clipping-region (make-object region% mdc))
+  (try 'set-font (make-object font% 12 'default 'normal 'normal))
+  (try 'set-origin 0 0)
+  (try 'set-pen (make-object pen% "Yellow" 1 'solid))
+  (try 'set-scale 2 2)
+  (try 'set-text-background (make-object color% "Yellow"))
+  (try 'set-text-foreground (make-object color% "Yellow"))
+  (try 'set-text-mode 'transparent)
+  (try 'try-color (make-object color% "Yellow") (make-object color%)))
+
+(st #f mdc ok?)
+(test-all mdc bad)
+
+(send mdc set-bitmap bm)
+(test-all mdc (lambda (m . args)
+		(apply (ivar/proc mdc m) args)))
+