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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 =
"Array length redefinition behavior with non-configurable elements";
print(BUGNUMBER + ": " + summary);
/**************
* BEGIN TEST *
**************/
var arr = [0, 1, 2];
Object.defineProperty(arr, 1, { configurable: false });
try
{
Object.defineProperty(arr, "length", { value: 0, writable: false });
}
catch (e)
{
assertEq(e instanceof TypeError, true,
"must throw TypeError when array truncation would have to remove " +
"non-configurable elements");
}
assertEq(arr.length, 2, "length is highest remaining index plus one");
var desc = Object.getOwnPropertyDescriptor(arr, "length");
assertEq(desc !== undefined, true);
assertEq(desc.value, 2);
assertEq(desc.writable, false);
assertEq(desc.enumerable, false);
assertEq(desc.configurable, false);
/******************************************************************************/
if (typeof reportCompare === "function")
reportCompare(true, true);
print("Tests complete");
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