diff -r e8438996d406 -r 1376481f15e7 vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java
--- a/vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java	Thu Oct 11 10:43:17 2012 -0700
+++ b/vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java	Tue Oct 16 11:55:56 2012 +0200
@@ -37,6 +37,15 @@
     @Test public void toStringConcatenationJava() throws Exception {
         assertEquals("Hello World!5", StringSample.toStringTest(5));
     }
+    
+    @Test(timeOut=10000) public void stringStringConcat() throws Exception {
+        assertExec(
+            "Composes strings OK",
+            "org_apidesign_vm4brwsr_StringSample_concatStringsLjava_lang_String",
+            "Hello World!1Ahoj"
+        );
+    }
+    
     private static CharSequence codeSeq;
     private static Invocable code;