diff -r 234fea368401 -r d5dd07b45f79 rt/vm/src/test/java/org/apidesign/vm4brwsr/TestVM.java
--- a/rt/vm/src/test/java/org/apidesign/vm4brwsr/TestVM.java	Sun Apr 27 22:40:17 2014 +0200
+++ b/rt/vm/src/test/java/org/apidesign/vm4brwsr/TestVM.java	Mon Apr 28 10:59:12 2014 +0200
@@ -169,6 +169,11 @@
             eng[0] = js;
         }
         try {
+            js.eval("atob = function(s) { return org.apidesign.vm4brwsr.ResourcesTest.parseBase64Binary(s); }");
+            
+            Object ahoj = js.eval("atob('QWhvag==')");
+            assertEquals(ahoj, "Ahoj", "Verify the atob function behaves properly");
+            
             Object res = js.eval(sb.toString());
             assertTrue(js instanceof Invocable, "It is invocable object: " + res);
             return new TestVM((Invocable) js, sb);