test/language/expressions/delete/11.4.1-4.a-6.js


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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.

/*---
info: >
    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.
es5id: 11.4.1-4.a-6
description: delete operator returns true when deleting a property inside 'with'
flags: [noStrict]
includes: [runTestCase.js]
---*/

function testcase() {
  var o = new Object();
  o.x = 1;
  var d;
  with(o)
  {
    d = delete x;
  }
  if (d === true && o.x === undefined) {
    return true;
  }
 }
runTestCase(testcase);