test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-4.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: 15.4.4.15-3-4
description: >
    Array.prototype.lastIndexOf - value of 'length' is a number (value
    is -0)
---*/

var obj = {
  0: true,
  length: -0
};

assert.sameValue(Array.prototype.lastIndexOf.call(obj, true), -1, 'Array.prototype.lastIndexOf.call(obj, true)');