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diff --git a/test/suite/intl402/ch13/13.2/13.2.1_1.js b/test/suite/intl402/ch13/13.2/13.2.1_1.js
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+++ b/test/suite/intl402/ch13/13.2/13.2.1_1.js
@@ -0,0 +1,37 @@
+// Copyright 2012 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * @description Tests that toLocaleString handles "this Number value" correctly.
+ * @author Norbert Lindenberg
+ */
+
+var invalidValues = [undefined, null, "5", false, {valueOf: function () { return 5; }}];
+var validValues = [5, NaN, -1234567.89, -Infinity];
+
+invalidValues.forEach(function (value) {
+    var error;
+    try {
+        var result = Number.prototype.toLocaleString.call(value);
+    } catch (e) {
+        error = e;
+    }
+    if (error === undefined) {
+        $ERROR("Number.prototype.toLocaleString did not reject this = " + value + ".");
+    } else if (error.name !== "TypeError") {
+        $ERROR("Number.prototype.toLocaleString rejected this = " + value + " with wrong error " + error.name + ".");
+    }
+});
+
+// for valid values, just check that a Number value and the corresponding
+// Number object get the same result.
+validValues.forEach(function (value) {
+    var Constructor = Number; // to keep jshint happy
+    var valueResult = Number.prototype.toLocaleString.call(value);
+    var objectResult = Number.prototype.toLocaleString.call(new Constructor(value));
+    if (valueResult !== objectResult) {
+        $ERROR("Number.prototype.toLocaleString produces different results for Number value " +
+            value + " and corresponding Number object: " + valueResult + " vs. " + objectResult + ".");
+    }
+});
+