The Tor Browser / file revision

 // Copyright 2012 Mozilla Corporation. All rights reserved.

 // This code is governed by the BSD license found in the LICENSE file.

 /**

  * @description Tests that Date.prototype.toLocaleString & Co. handle "this time value" correctly.

  * @author Norbert Lindenberg

  */

 var functions = {

     toLocaleString: Date.prototype.toLocaleString,

     toLocaleDateString: Date.prototype.toLocaleDateString,

     toLocaleTimeString: Date.prototype.toLocaleTimeString

 };

 var invalidValues = [undefined, null, 5, "5", false, {valueOf: function () { return 5; }}];

 Object.getOwnPropertyNames(functions).forEach(function (p) {

     var f = functions[p];

     invalidValues.forEach(function (value) {

         var error;

         try {

             var result = f.call(value);

         } catch (e) {

             error = e;

         }

         if (error === undefined) {

             $ERROR("Date.prototype." + p + " did not reject this = " + value + ".");

         } else if (error.name !== "TypeError") {

             $ERROR("Date.prototype." + p + " rejected this = " + value + " with wrong error " + error.name + ".");

         }

     });

 });