| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| es6id: 9.5.3 |
| description: > |
| Return target.[[IsExtensible]]() if trap is undefined. |
| info: | |
| [[IsExtensible]] ( ) |
| |
| ... |
| 7. If trap is undefined, then |
| a. Return target.[[IsExtensible]](). |
| ... |
| features: [Proxy] |
| ---*/ |
| |
| var target = {}; |
| var p = new Proxy(target, {}); |
| |
| assert.sameValue(Object.isExtensible(p), true); |
| |
| Object.preventExtensions(target); |
| |
| assert.sameValue(Object.isExtensible(p), false); |
