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diff --git a/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-149.js b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-149.js
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+++ b/js/src/tests/test262/built-ins/Object/defineProperty/15.2.3.6-4-149.js
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+// Copyright (c) 2012 Ecma International. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 15.2.3.6-4-149
+description: >
+ Object.defineProperty - 'O' is an Array, 'name' is the length
+ property of 'O', test the [[Value]] field of 'desc' is an Object
+ which has an own toString and valueOf method (15.4.5.1 step 3.c)
+---*/
+
+var arrObj = [];
+var toStringAccessed = false;
+var valueOfAccessed = false;
+
+Object.defineProperty(arrObj, "length", {
+ value: {
+ toString: function() {
+ toStringAccessed = true;
+ return '2';
+ },
+
+ valueOf: function() {
+ valueOfAccessed = true;
+ return 3;
+ }
+ }
+});
+
+assert.sameValue(arrObj.length, 3, 'arrObj.length');
+assert.sameValue(toStringAccessed, false, 'toStringAccessed');
+assert(valueOfAccessed, 'valueOfAccessed !== true');
+
+reportCompare(0, 0);