length-nonwritable-redefine-nop.js

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/*

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/

 * Contributor:

 *   Jeff Walden <jwalden+code@mit.edu>

*/

//-----------------------------------------------------------------------------

var BUGNUMBER = 858381;

var summary = "No-op array length redefinition";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

var arr;

// initializedLength == capacity == length

// 6 == 6 == 6

arr = Object.defineProperty([0, 1, 2, 3, 4, 5], "length", { writable: false });

Object.defineProperty(arr, "length", { value: 6 });

Object.defineProperty(arr, "length", { writable: false });

Object.defineProperty(arr, "length", { configurable: false });

Object.defineProperty(arr, "length", { writable: false, configurable: false });

Object.defineProperty(arr, "length", { writable: false, value: 6 });

Object.defineProperty(arr, "length", { configurable: false, value: 6 });

Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 6 });

// initializedLength == capacity < length

// 6 == 6 < 8

arr = Object.defineProperty([0, 1, 2, 3, 4, 5], "length", { value: 8, writable: false });

Object.defineProperty(arr, "length", { value: 8 });

Object.defineProperty(arr, "length", { writable: false });

Object.defineProperty(arr, "length", { configurable: false });

Object.defineProperty(arr, "length", { writable: false, configurable: false });

Object.defineProperty(arr, "length", { writable: false, value: 8 });

Object.defineProperty(arr, "length", { configurable: false, value: 8 });

Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 8 });

// initializedLength < capacity == length

// 7 < 8 == 8

arr = Object.defineProperty([0, 1, 2, 3, 4, 5, 6, /* hole */, ], "length",

                            { value: 8, writable: false });

Object.defineProperty(arr, "length", { value: 8 });

Object.defineProperty(arr, "length", { writable: false });

Object.defineProperty(arr, "length", { configurable: false });

Object.defineProperty(arr, "length", { writable: false, configurable: false });

Object.defineProperty(arr, "length", { writable: false, value: 8 });

Object.defineProperty(arr, "length", { configurable: false, value: 8 });

Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 8 });

// initializedLength < capacity < length

// 3 < 6 < 8

arr = Object.defineProperty([0, 1, 2], "length", { value: 8, writable: false });

Object.defineProperty(arr, "length", { value: 8 });

Object.defineProperty(arr, "length", { writable: false });

Object.defineProperty(arr, "length", { configurable: false });

Object.defineProperty(arr, "length", { writable: false, configurable: false });

Object.defineProperty(arr, "length", { writable: false, value: 8 });

Object.defineProperty(arr, "length", { configurable: false, value: 8 });

Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 8 });

/******************************************************************************/

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");