test262/test/built-ins/Object/defineProperty/15.2.3.6-4-63.js

// 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.

/*---
es5id: 15.2.3.6-4-63
description: >
    Object.defineProperty - both desc.value and name.value are NaN
    (8.12.9 step 6)
includes: [runTestCase.js]
---*/

function testcase() {

        var obj = {};

        Object.defineProperty(obj, "foo", { value: NaN });

        Object.defineProperty(obj, "foo", { value: NaN });

        if (!isNaN(obj.foo)) {
            return false;
        }

        obj.foo = "verifyValue";
        if (obj.foo === "verifyValue") {
            return false;
        }

        for (var prop in obj) {
            if (obj.hasOwnProperty(prop) && prop === "foo") {
                return false;
            }
        }

        delete obj.foo;
        if (!obj.hasOwnProperty("foo")) {
            return false;
        }

        return true;
    }
runTestCase(testcase);