test/built-ins/Array/prototype/some/15.4.4.17-7-b-12.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-b-12
description: >
    Array.prototype.some - deleting own property with prototype
    property causes prototype index property to be visited on an
    Array-like object
---*/

function callbackfn(val, idx, obj) {
  if (idx === 1 && val === 1) {
    return true;
  } else {
    return false;
  }
}
var arr = {
  0: 0,
  1: 111,
  2: 2,
  length: 10
};

Object.defineProperty(arr, "0", {
  get: function() {
    delete arr[1];
    return 0;
  },
  configurable: true
});

Object.prototype[1] = 1;

assert(Array.prototype.some.call(arr, callbackfn), 'Array.prototype.some.call(arr, callbackfn) !== true');