JSTests/test262/test/built-ins/Array/prototype/concat/15.4.4.4-5-c-i-1.js

// 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.concat
es5id: 15.4.4.4-5-c-i-1
description: >
    Array.prototype.concat will concat an Array when index property
    (read-only) exists in Array.prototype (Step 5.c.i)
---*/

            Object.defineProperty(Array.prototype, "0", {
                value: 100,
                writable: false,
                configurable: true
            });

            var newArr = Array.prototype.concat.call(101);

            var hasProperty = newArr.hasOwnProperty("0");

	    var instanceOfVerify = typeof newArr[0]==="object";

            var verifyValue = false;
            verifyValue = newArr[0] == 101;

            var verifyEnumerable = false;
            for (var p in newArr) {
                if (p === "0" && newArr.hasOwnProperty("0")) {
                    verifyEnumerable = true;
                }
            }

            var verifyWritable = false;
            newArr[0] = 12;
            verifyWritable = newArr[0] === 12;

            var verifyConfigurable = false;
            delete newArr[0];
            verifyConfigurable = newArr.hasOwnProperty("0");

assert(hasProperty, 'hasProperty !== true');
assert(instanceOfVerify, 'instanceOfVerify !== true');
assert(verifyValue, 'verifyValue !== true');
assert.sameValue(verifyConfigurable, false, 'verifyConfigurable');
assert(verifyEnumerable, 'verifyEnumerable !== true');
assert(verifyWritable, 'verifyWritable !== true');