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 /// Copyright (c) 2012 Ecma International.  All rights reserved. 

 /// Ecma International makes this code available under the terms and conditions set

 /// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 

 /// "Use Terms").   Any redistribution of this code must retain the above 

 /// copyright and this notice and otherwise comply with the Use Terms.

 /**

  * This test is actually testing the [[Delete]] internal method (8.12.8). Since the

  * language provides no way to directly exercise [[Delete]], the tests are placed here.

  *

  * @path ch11/11.4/11.4.1/11.4.1-4.a-5.js

  * @description delete operator returns false when deleting the environment object inside 'with'

  */

 function testcase() {

   var o = new Object();

   o.x = 1;

   var d;

   with(o)

   {

     d = delete o;

   }

   if (d === false && typeof(o) === 'object' && o.x === 1) {

     return true;

   }

   return false;

  }

 runTestCase(testcase);