test/built-ins/Array/prototype/indexOf/15.4.4.14-5-24.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.indexof
es5id: 15.4.4.14-5-24
description: >
    Array.prototype.indexOf throws TypeError exception when value of
    'fromIndex' is an object with toString and valueOf methods that
    don�t return primitive values
---*/

        var toStringAccessed = false;
        var valueOfAccessed = false;
        var fromIndex = {
            toString: function () {
                toStringAccessed = true;
                return {};
            },

            valueOf: function () {
                valueOfAccessed = true;
                return {};
            }
        };

assert.throws(TypeError, function() {
            [0, true].indexOf(true, fromIndex);
});

assert(toStringAccessed, 'toStringAccessed');
assert(valueOfAccessed, 'valueOfAccessed');