diff -r c0bbf144c2c6 -r 25eba32a96cd vm/src/test/java/org/apidesign/vm4brwsr/ClassTest.java
--- a/vm/src/test/java/org/apidesign/vm4brwsr/ClassTest.java	Tue Jan 08 16:01:25 2013 +0100
+++ b/vm/src/test/java/org/apidesign/vm4brwsr/ClassTest.java	Thu Feb 14 13:17:19 2013 +0100
@@ -181,5 +181,11 @@
     ) throws Exception {
         StaticMethodTest.assertExec(code, codeSeq, msg, clazz, method, expRes, args);
     }
+    @Test public void isClassAssignable() throws Exception {
+        assertExec("isAssignable works on subclasses", Classes.class, 
+            "isClassAssignable__Z", 
+            true
+        );
+    }
     
 }