JSTests/test262/test/built-ins/Array/prototype/some/15.4.4.17-2-3.js

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

/*---
esid: sec-array.prototype.some
description: >
    Array.prototype.some - 'length' is an own data property that
    overrides an inherited data property on an Array-like object
---*/

function callbackfn1(val, idx, obj) {
  return val > 10;
}

function callbackfn2(val, idx, obj) {
  return val > 11;
}

var proto = {
  length: 3
};

var Con = function() {};
Con.prototype = proto;

var child = new Con();
child.length = 2;
child[0] = 9;
child[1] = 11;
child[2] = 12;

assert(Array.prototype.some.call(child, callbackfn1), 'Array.prototype.some.call(child, callbackfn1) !== true');
assert.sameValue(Array.prototype.some.call(child, callbackfn2), false, 'Array.prototype.some.call(child, callbackfn2)');