test262/test/language/expressions/assignment/11.13.1-3-s.js

19 lines
534 B
JavaScript

// Copyright (c) 2012 Ecma International. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es5id: 11.13.1-3-s
description: >
Strict Mode - TypeError is thrown if The LeftHandSide is a
reference to a non-existent property of an object whose
[[Extensible]] internal property has the value false under strict
mode
flags: [onlyStrict]
---*/
var obj = {};
Object.preventExtensions(obj);
assert.throws(TypeError, function() {
obj.len = 10;
});