mirror of https://github.com/tc39/test262.git
29 lines
660 B
JavaScript
29 lines
660 B
JavaScript
// Copyright (C) 2019 Ecma International. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
esid: sec-object.freeze
|
|
description: >
|
|
Object.freeze throws if SetIntegrityLevel(O, frozen) returns false.
|
|
info: |
|
|
Object.freeze ( O )
|
|
...
|
|
2. Let status be ? SetIntegrityLevel(O, frozen).
|
|
3. If status is false, throw a TypeError exception.
|
|
|
|
SetIntegrityLevel ( O, level )
|
|
...
|
|
3. Let status be ? O.[[PreventExtensions]]().
|
|
4. If status is false, return false.
|
|
---*/
|
|
|
|
const p = new Proxy({}, {
|
|
preventExtensions() {
|
|
return false;
|
|
},
|
|
});
|
|
|
|
assert.throws(TypeError, () => {
|
|
Object.freeze(p);
|
|
});
|