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/// Copyright (c) 2012 Ecma International. All rights reserved.
/// Ecma International makes this code available under the terms and conditions set
/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
/// "Use Terms"). Any redistribution of this code must retain the above
/// copyright and this notice and otherwise comply with the Use Terms.
/**
* @path ch15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-11.js
* @description Array.prototype.filter - deleting property of prototype causes prototype index property not to be visited on an Array
*/
function testcase() {
function callbackfn(val, idx, obj) {
return true;
}
var arr = [0, , 2];
Object.defineProperty(arr, "0", {
get: function () {
delete Array.prototype[1];
return 0;
},
configurable: true
});
try {
Array.prototype[1] = 1;
var newArr = arr.filter(callbackfn);
return newArr.length === 2 && newArr[1] !== 1;
} finally {
delete Array.prototype[1];
}
}
runTestCase(testcase);
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