arguments-property-attributes.js

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/*

 * Any copyright is dedicated to the Public Domain.

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

*/

var gTestfile = 'arguments-property-attributes.js';

var BUGNUMBER = 516255;

var summary = "Attributes for properties of arguments objects";

print(BUGNUMBER + ": " + summary);

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

 * BEGIN TEST *

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

// normal

function args() { return arguments; }

var a = args(0, 1);

var argProps = Object.getOwnPropertyNames(a).sort();

assertEq(argProps.indexOf("callee") >= 0, true);

assertEq(argProps.indexOf("0") >= 0, true);

assertEq(argProps.indexOf("1") >= 0, true);

assertEq(argProps.indexOf("length") >= 0, true);

var calleeDesc = Object.getOwnPropertyDescriptor(a, "callee");

assertEq(calleeDesc.value, args);

assertEq(calleeDesc.writable, true);

assertEq(calleeDesc.enumerable, false);

assertEq(calleeDesc.configurable, true);

var zeroDesc = Object.getOwnPropertyDescriptor(a, "0");

assertEq(zeroDesc.value, 0);

assertEq(zeroDesc.writable, true);

assertEq(zeroDesc.enumerable, true);

assertEq(zeroDesc.configurable, true);

var oneDesc = Object.getOwnPropertyDescriptor(a, "1");

assertEq(oneDesc.value, 1);

assertEq(oneDesc.writable, true);

assertEq(oneDesc.enumerable, true);

assertEq(oneDesc.configurable, true);

var lengthDesc = Object.getOwnPropertyDescriptor(a, "length");

assertEq(lengthDesc.value, 2);

assertEq(lengthDesc.writable, true);

assertEq(lengthDesc.enumerable, false);

assertEq(lengthDesc.configurable, true);

// strict

function strictArgs() { "use strict"; return arguments; }

var sa = strictArgs(0, 1);

var strictArgProps = Object.getOwnPropertyNames(sa).sort();

assertEq(strictArgProps.indexOf("callee") >= 0, true);

assertEq(strictArgProps.indexOf("caller") >= 0, false);

assertEq(strictArgProps.indexOf("0") >= 0, true);

assertEq(strictArgProps.indexOf("1") >= 0, true);

assertEq(strictArgProps.indexOf("length") >= 0, true);

var strictCalleeDesc = Object.getOwnPropertyDescriptor(sa, "callee");

assertEq(typeof strictCalleeDesc.get, "function");

assertEq(typeof strictCalleeDesc.set, "function");

assertEq(strictCalleeDesc.get, strictCalleeDesc.set);

assertEq(strictCalleeDesc.enumerable, false);

assertEq(strictCalleeDesc.configurable, false);

var strictCallerDesc = Object.getOwnPropertyDescriptor(sa, "caller");

assertEq(strictCallerDesc, undefined);

var strictZeroDesc = Object.getOwnPropertyDescriptor(sa, "0");

assertEq(strictZeroDesc.value, 0);

assertEq(strictZeroDesc.writable, true);

assertEq(strictZeroDesc.enumerable, true);

assertEq(strictZeroDesc.configurable, true);

var strictOneDesc = Object.getOwnPropertyDescriptor(sa, "1");

assertEq(strictOneDesc.value, 1);

assertEq(strictOneDesc.writable, true);

assertEq(strictOneDesc.enumerable, true);

assertEq(strictOneDesc.configurable, true);

var strictLengthDesc = Object.getOwnPropertyDescriptor(sa, "length");

assertEq(strictLengthDesc.value, 2);

assertEq(strictLengthDesc.writable, true);

assertEq(strictLengthDesc.enumerable, false);

assertEq(strictLengthDesc.configurable, true);

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

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("All tests passed!");