| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| es6id: 26.1.12 |
| description: > |
| Returns boolean from Proxy object. |
| info: | |
| 26.1.12 Reflect.preventExtensions ( target ) |
| |
| ... |
| 2. Return target.[[PreventExtensions]](). |
| |
| 9.5.4 [[PreventExtensions]] ( ) |
| |
| 8. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target»)). |
| 9. ReturnIfAbrupt(booleanTrapResult). |
| 10. If booleanTrapResult is true, then |
| a. Let targetIsExtensible be target.[[IsExtensible]](). |
| b. ReturnIfAbrupt(targetIsExtensible). |
| c. If targetIsExtensible is true, throw a TypeError exception. |
| 11. Return booleanTrapResult. |
| features: [Proxy, Reflect] |
| ---*/ |
| |
| var p1 = new Proxy({}, { |
| preventExtensions: function() { |
| return false; |
| } |
| }); |
| |
| assert.sameValue( |
| Reflect.preventExtensions(p1), false, |
| 'returns false from Proxy handler' |
| ); |
| |
| var p2 = new Proxy({}, { |
| preventExtensions: function(target) { |
| Object.preventExtensions(target); |
| return true; |
| } |
| }); |
| |
| assert.sameValue( |
| Reflect.preventExtensions(p2), true, |
| 'returns true from Proxy handler' |
| ); |