diff -r 8e42a376da73 -r ef506621d1ee rt/vm/src/test/java/org/apidesign/vm4brwsr/NumberTest.java
--- a/rt/vm/src/test/java/org/apidesign/vm4brwsr/NumberTest.java	Thu May 16 08:49:55 2013 +0200
+++ b/rt/vm/src/test/java/org/apidesign/vm4brwsr/NumberTest.java	Sun Feb 16 20:06:03 2014 +0100
@@ -77,16 +77,22 @@
             new byte[] { (byte)0, (byte)0, (byte)0, (byte)0, (byte)0, (byte)0, (byte)13, (byte)126 }
         );
     }
-    /* XXX: JavaScript cannot represent as big longs as Java. 
+    @Test public void deserializeMiddleLong() throws Exception {
+        final byte[] arr = new byte[] {
+            (byte)0, (byte)0, (byte)64, (byte)32, (byte)23, (byte)0, (byte)0, (byte)0
+        };
+        long exp = Numbers.deserLong(arr, 16);
+        assertExec("Should be " + exp, Numbers.class, "deserLong__J_3BI", 
+            Double.valueOf(exp), arr, 16);
+    }
     @Test public void deserializeLargeLong() throws Exception {
         final byte[] arr = new byte[] {
             (byte)64, (byte)8, (byte)0, (byte)0, (byte)0, (byte)0, (byte)0, (byte)0
         };
-        long exp = Numbers.deserLong(arr);
-        assertExec("Should be " + exp, "org_apidesign_vm4brwsr_Numbers_deserLong__JAB", 
-            Double.valueOf(exp), arr);
+        long exp = Numbers.deserLong(arr, 32);
+        assertExec("Should be " + exp, Numbers.class, "deserLong__J_3BI", 
+            Double.valueOf(exp), arr, 32);
     }
-    */
     
     @Test public void deserializeFloatInJava() throws Exception {
         float f = 54324.32423f;