test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-1-5.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: 15.4.4.15-1-5
description: Array.prototype.lastIndexOf applied to number primitive
---*/

Number.prototype[1] = isNaN;
Number.prototype.length = 2;

assert.sameValue(Array.prototype.lastIndexOf.call(5, isNaN), 1, 'Array.prototype.lastIndexOf.call(5, isNaN)');