test262/test/built-ins/Object/defineProperty/15.2.3.6-4-457.js

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1.0 KiB
JavaScript

// Copyright (c) 2012 Ecma International. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es5id: 15.2.3.6-4-457
description: >
ES5 Attributes - fail to update the accessor property ([[Get]] is
undefined, [[Set]] is undefined, [[Enumerable]] is false,
[[Configurable]] is false) to a data property
includes: [runTestCase.js]
---*/
function testcase() {
var obj = {};
Object.defineProperty(obj, "prop", {
get: undefined,
set: undefined,
enumerable: false,
configurable: false
});
var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");
try {
Object.defineProperty(obj, "prop", {
value: 1001
});
return false;
} catch (e) {
var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
return desc1.hasOwnProperty("get") && !desc2.hasOwnProperty("value") && e instanceof TypeError;
}
}
runTestCase(testcase);