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js/src/tests/ecma_5/Object/extensibility-01.js@6474c204b198 (annotated)

js/src/tests/ecma_5/Object/extensibility-01.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/*
michael@0	2	* Any copyright is dedicated to the Public Domain.
michael@0	3	* http://creativecommons.org/licenses/publicdomain/
michael@0	4	* Contributor:
michael@0	5	* Jeff Walden <jwalden+code@mit.edu>
michael@0	6	*/
michael@0	7
michael@0	8	var gTestfile = '15.2.3.10-01.js';
michael@0	9	//-----------------------------------------------------------------------------
michael@0	10	var BUGNUMBER = 492849;
michael@0	11	var summary = 'ES5: Implement Object.preventExtensions, Object.isExtensible';
michael@0	12
michael@0	13	print(BUGNUMBER + ": " + summary);
michael@0	14
michael@0	15	/**************
michael@0	16	* BEGIN TEST *
michael@0	17	**************/
michael@0	18
michael@0	19	function trySetProperty(o, p, v, strict)
michael@0	20	{
michael@0	21	function strictSetProperty()
michael@0	22	{
michael@0	23	"use strict";
michael@0	24	o[p] = v;
michael@0	25	}
michael@0	26
michael@0	27	function setProperty()
michael@0	28	{
michael@0	29	o[p] = v;
michael@0	30	}
michael@0	31
michael@0	32	assertEq(Object.prototype.hasOwnProperty.call(o, p), false);
michael@0	33
michael@0	34	try
michael@0	35	{
michael@0	36	if (strict)
michael@0	37	strictSetProperty();
michael@0	38	else
michael@0	39	setProperty();
michael@0	40	if (o[p] === v)
michael@0	41	return "set";
michael@0	42	if (p in o)
michael@0	43	return "set-converted";
michael@0	44	return "swallowed";
michael@0	45	}
michael@0	46	catch (e)
michael@0	47	{
michael@0	48	return "throw";
michael@0	49	}
michael@0	50	}
michael@0	51
michael@0	52	function tryDefineProperty(o, p, v)
michael@0	53	{
michael@0	54	assertEq(Object.prototype.hasOwnProperty.call(o, p), false);
michael@0	55
michael@0	56	try
michael@0	57	{
michael@0	58	Object.defineProperty(o, p, { value: v });
michael@0	59	if (o[p] === v)
michael@0	60	return "set";
michael@0	61	if (p in o)
michael@0	62	return "set-converted";
michael@0	63	return "swallowed";
michael@0	64	}
michael@0	65	catch (e)
michael@0	66	{
michael@0	67	return "throw";
michael@0	68	}
michael@0	69	}
michael@0	70
michael@0	71	assertEq(typeof Object.preventExtensions, "function");
michael@0	72	assertEq(Object.preventExtensions.length, 1);
michael@0	73
michael@0	74	var slowArray = [1, 2, 3];
michael@0	75	slowArray.slow = 5;
michael@0	76	var objs =
michael@0	77	[{}, { 1: 2 }, { a: 3 }, [], [1], [, 1], slowArray, function a(){}, /a/];
michael@0	78
michael@0	79	for (var i = 0, sz = objs.length; i < sz; i++)
michael@0	80	{
michael@0	81	var o = objs[i];
michael@0	82	assertEq(Object.isExtensible(o), true, "object " + i + " not extensible?");
michael@0	83
michael@0	84	var o2 = Object.preventExtensions(o);
michael@0	85	assertEq(o, o2);
michael@0	86
michael@0	87	assertEq(Object.isExtensible(o), false, "object " + i + " is extensible?");
michael@0	88
michael@0	89	assertEq(trySetProperty(o, "baz", 17, true), "throw",
michael@0	90	"unexpected behavior for strict-mode property-addition to " +
michael@0	91	"object " + i);
michael@0	92	assertEq(trySetProperty(o, "baz", 17, false), "swallowed",
michael@0	93	"unexpected behavior for property-addition to object " + i);
michael@0	94
michael@0	95	assertEq(tryDefineProperty(o, "baz", 17), "throw",
michael@0	96	"unexpected behavior for new property definition on object " + i);
michael@0	97	}
michael@0	98
michael@0	99	/******************************************************************************/
michael@0	100
michael@0	101	reportCompare(true, true);
michael@0	102
michael@0	103	print("All tests passed!");