test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-4-2.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: 15.4.4.15-4-2
description: >
    Array.prototype.lastIndexOf returns -1 if 'length' is 0 ( length
    overridden to null (type conversion))
---*/

var i = Array.prototype.lastIndexOf.call({
  length: null
}, 1);


assert.sameValue(i, -1, 'i');