test262/test/suite/chapter15/15.2/15.2.3/15.2.3.6/15.2.3.6-4-620.js

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/**
 * @path chapter15/15.2/15.2.3/15.2.3.6/15.2.3.6-4-620.js
 * @description ES5 Attributes - all attributes in Array.prototype.reduceRight are correct
 */


function testcase() {
        var desc = Object.getOwnPropertyDescriptor(Array.prototype, "reduceRight");

        var propertyAreCorrect = (desc.writable === true && desc.enumerable === false && desc.configurable === true);

        var temp = Array.prototype.reduceRight;

        try {
            Array.prototype.reduceRight = "2010";

            var isWritable = (Array.prototype.reduceRight === "2010");

            var isEnumerable = false;

            for (var prop in Array.prototype) {
                if (prop === "reduceRight") {
                    isEnumerable = true;
                }
            }

            delete Array.prototype.reduceRight;

            var isConfigurable = !Array.prototype.hasOwnProperty("reduceRight");

            return propertyAreCorrect && isWritable && !isEnumerable && isConfigurable;
        } finally {
            Object.defineProperty(Array.prototype, "reduceRight", {
                value: temp,
                writable: true,
                enumerable: false,
                configurable: true
            });
        }
    }
runTestCase(testcase);