JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-9-c-ii-4.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.filter
es5id: 15.4.4.20-9-c-ii-4
description: >
    Array.prototype.filter - k values are passed in ascending numeric
    order
---*/

        var arr = [0, 1, 2, 3, 4, 5];
        var lastIdx = 0;
        var called = 0;
        function callbackfn(val, idx, o) {
            called++;
            if (lastIdx !== idx) {
                return false;
            } else {
                lastIdx++;
                return true;
            }
        }
        var newArr = arr.filter(callbackfn);

assert.sameValue(newArr.length, called, 'newArr.length');