object-seal-inherited-data-properties-are-ignored.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.

/*---

esid: sec-setintegritylevel

description: Object.seal - inherited data properties are ignored

---*/

var proto = {};

Object.defineProperty(proto, "Father", {

  value: 10,

  configurable: true

});

var ConstructFun = function() {};

ConstructFun.prototype = proto;

var child = new ConstructFun();

var preCheck = Object.isExtensible(child);

Object.seal(child);

var beforeDeleted = proto.hasOwnProperty("Father");

delete proto.Father;

var afterDeleted = proto.hasOwnProperty("Father");

assert(preCheck, 'preCheck !== true');

assert(beforeDeleted, 'beforeDeleted !== true');

assert.sameValue(afterDeleted, false, 'afterDeleted');

reportCompare(0, 0);