mirror of https://github.com/tc39/test262.git
36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
// Copyright (c) 2012 Ecma International. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
es5id: 15.2.3.6-4-338
|
|
description: >
|
|
ES5 Attributes - fail to update [[Configurable]] attribute of data
|
|
property ([[Writable]] is true, [[Enumerable]] is true,
|
|
[[Configurable]] is false) to different value
|
|
includes: [runTestCase.js]
|
|
---*/
|
|
|
|
function testcase() {
|
|
var obj = {};
|
|
|
|
Object.defineProperty(obj, "prop", {
|
|
value: 2010,
|
|
writable: true,
|
|
enumerable: true,
|
|
configurable: false
|
|
});
|
|
var propertyDefineCorrect = obj.hasOwnProperty("prop");
|
|
var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");
|
|
|
|
try {
|
|
Object.defineProperty(obj, "prop", {
|
|
configurable: true
|
|
});
|
|
return false;
|
|
} catch (e) {
|
|
var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
|
|
return propertyDefineCorrect && desc1.configurable === false && obj.prop === 2010 && desc2.configurable === false && e instanceof TypeError;
|
|
}
|
|
}
|
|
runTestCase(testcase);
|