test262/test/built-ins/Object/defineProperty/15.2.3.6-4-168.js

40 lines
1.4 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: 15.2.3.6-4-168
description: >
Object.defineProperty - 'O' is an Array, 'name' is the length
property of 'O', whose writable attribute is being changed to
false and the [[Value]] field of 'desc' is less than value of the
length property and also lesser than an index of the array which
is set to configurable:false, test that new length is set to a
value greater than the non-deletable index by 1, writable
attribute of length is set to false and TypeError exception is
thrown (15.4.5.1 step 3.i.iii)
includes: [runTestCase.js]
---*/
function testcase() {
var arrObj = [0, 1, 2];
try {
Object.defineProperty(arrObj, "1", {
configurable: false
});
Object.defineProperty(arrObj, "length", {
value: 0,
writable: false
});
return false;
} catch (e) {
return e instanceof TypeError && arrObj.length === 2;
}
}
runTestCase(testcase);