JSTests/test262/test/built-ins/Object/seal/object-seal-p-is-own-property-of-a-date-object-that-uses-object-s-get-own-property.js

// 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 - 'P' is own property of a Date object that uses
    Object's [[GetOwnProperty]]
includes: [propertyHelper.js]
---*/

var obj = new Date();

obj.foo = 10;

assert(Object.isExtensible(obj));
Object.seal(obj);

verifyNotConfigurable(obj, "foo");
assert.sameValue(obj.foo, 10);