diff -r 45184b2f9697 -r f61602ea7759 vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java
--- a/vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java	Thu Nov 08 18:34:12 2012 +0100
+++ b/vm/src/test/java/org/apidesign/vm4brwsr/StringTest.java	Sat Nov 17 16:15:10 2012 +0100
@@ -44,6 +44,14 @@
         );
     }
 
+    @Test public void concatChars() throws Exception {
+        assertExec(
+            "Composing yields ABC",
+            "org_apidesign_vm4brwsr_StringSample_charsLjava_lang_StringCCC",
+            "ABC", 'A', 'B', 'C'
+        );
+    }
+
     @Test(timeOut=10000) public void toStringConcatenation() throws Exception {
         assertExec(
             "Five executions should generate 5Hello World!",