test/built-ins/Array/prototype/some/15.4.4.17-7-c-i-4.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-array.prototype.some
es5id: 15.4.4.17-7-c-i-4
description: >
    Array.prototype.some - element to be retrieved is own data
    property that overrides an inherited data property on an Array
---*/

var kValue = "abc";

function callbackfn(val, idx, obj) {
  if (idx === 0) {
    return val === kValue;
  }
  return false;
}

Array.prototype[0] = 11;

assert([kValue].some(callbackfn), '[kValue].some(callbackfn) !== true');