1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/concat/S15.5.4.6_A3.js b/js/src/tests/test262/built-ins/String/prototype/concat/S15.5.4.6_A3.js
new file mode 100644
index 0000000000..91034b8756
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/concat/S15.5.4.6_A3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: String.prototype.concat([,[...]]) can't change the instance to be applied
+es5id: 15.5.4.6_A3
+description: Checking if varying the instance that is applied fails
+---*/
+
+var __instance = new String("one");
+
+__instance.concat("two");
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (__instance != "one") {
+  throw new Test262Error('#1: __instance = new String("one"); __instance.concat("two");  __instance = new String("one"); __instance.concat("two"); __instance == "one". Actual: ' + __instance);
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);