test262/test/built-ins/Object/defineProperty/15.2.3.6-4-455.js

53 lines
1.6 KiB
JavaScript

// 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: 15.2.3.6-4-455
description: >
ES5 Attributes - fail to update [[Enumerable]] attribute of
accessor property ([[Get]] is undefined, [[Set]] is undefined,
[[Enumerable]] is false, [[Configurable]] is false) to different
value
includes: [runTestCase.js]
---*/
function testcase() {
var obj = {};
Object.defineProperty(obj, "prop", {
get: undefined,
set: undefined,
enumerable: false,
configurable: false
});
var result1 = false;
var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");
for (var p1 in obj) {
if (p1 === "prop") {
result1 = true;
}
}
try {
Object.defineProperty(obj, "prop", {
enumerable: true
});
return false;
} catch (e) {
var result2 = false;
var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
for (var p2 in obj) {
if (p2 === "prop") {
result2 = true;
}
}
return !result1 && !result2 && desc1.enumerable === false && desc2.enumerable === false && e instanceof TypeError;
}
}
runTestCase(testcase);