test262/test/built-ins/Object/preventExtensions/15.2.3.10-3-22.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.10-3-22
description: >
    Object.preventExtensions - properties can still be deleted after
    extensions have been prevented
includes: [runTestCase.js]
---*/

function testcase() {
        var obj = { prop: 12 };
        var preCheck = Object.isExtensible(obj);
        Object.preventExtensions(obj);

        delete obj.prop;

        return preCheck && !obj.hasOwnProperty("prop");

    }
runTestCase(testcase);