test/built-ins/Array/prototype/filter/15.4.4.20-9-c-iii-13.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.filter
es5id: 15.4.4.20-9-c-iii-13
description: >
    Array.prototype.filter return value of callbackfn is a number
    (value is NaN)
---*/

var accessed = false;

function callbackfn(val, idx, obj) {
  accessed = true;
  return NaN;
}

var newArr = [11].filter(callbackfn);

assert.sameValue(newArr.length, 0, 'newArr.length');
assert(accessed, 'accessed !== true');