JSTests/test262/test/built-ins/Array/S15.4.2.1_A1.1_T1.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: |
    The [[Prototype]] property of the newly constructed object
    is set to the original Array prototype object, the one that
    is the initial value of Array.prototype
es5id: 15.4.2.1_A1.1_T1
description: >
    Create new property of Array.prototype. When new Array object has
    this property
---*/

Array.prototype.myproperty = 1;
var x = new Array();
assert.sameValue(x.myproperty, 1, 'The value of x.myproperty is expected to be 1');
assert.sameValue(x.hasOwnProperty('myproperty'), false, 'x.hasOwnProperty("myproperty") must return false');