test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-5-29.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: 15.4.4.15-5-29
description: >
    Array.prototype.lastIndexOf - side effects produced by step 2 are
    visible when an exception occurs
---*/

        var stepFiveOccurs = false;

        var obj = {};
        Object.defineProperty(obj, "length", {
            get: function () {
                throw new RangeError();
            },
            configurable: true
        });

        var fromIndex = {
            valueOf: function () {
                stepFiveOccurs = true;
                return 0;
            }
        };
assert.throws(RangeError, function() {
            Array.prototype.lastIndexOf.call(obj, undefined, fromIndex);
});
assert.sameValue(stepFiveOccurs, false, 'stepFiveOccurs');