test/built-ins/Array/prototype/indexOf/15.4.4.14-9-a-19.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: 15.4.4.14-9-a-19
description: >
    Array.prototype.indexOf - decreasing length of array does not
    delete non-configurable properties
flags: [noStrict]
---*/

        var arr = [0, 1, 2];

        Object.defineProperty(arr, "2", {
            get: function () {
                return "unconfigurable";
            },
            configurable: false
        });

        Object.defineProperty(arr, "1", {
            get: function () {
                arr.length = 2;
                return 1;
            },
            configurable: true
        });


assert.sameValue(arr.indexOf("unconfigurable"), 2, 'arr.indexOf("unconfigurable")');