test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-5-12.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.lastindexof
es5id: 15.4.4.15-5-12
description: >
    Array.prototype.lastIndexOf - value of 'fromIndex' is a number
    (value is Infinity)
---*/

var arr = [];
arr[Math.pow(2, 32) - 2] = null; // length is the max value of Uint type

assert.sameValue(arr.lastIndexOf(null, Infinity), Math.pow(2, 32) - 2, 'arr.lastIndexOf(null, Infinity)');