diff -r 346633cd13d6 -r 033d51e026b0 vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java
--- a/vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java	Tue Oct 16 12:42:00 2012 +0200
+++ b/vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java	Tue Oct 23 16:50:27 2012 +0200
@@ -62,6 +62,14 @@
             "Hello World!1Ahoj"
         );
     }
+
+    public void equalsAndSubstring() throws Exception {
+        assertExec(
+            "Composes are OK",
+            "org_apidesign_vm4brwsr_StringSample_equalToHelloZII",
+            Double.valueOf(1), 0, 5
+        );
+    }
     
     private static CharSequence codeSeq;
     private static Invocable code;