| // Copyright 2015 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| var throwTypeErrorFunction = |
| Object.getOwnPropertyDescriptor(Function.prototype, 'arguments').get; |
| |
| var nameDesc = |
| Object.getOwnPropertyDescriptor(throwTypeErrorFunction, 'name'); |
| assertFalse(nameDesc.configurable, 'configurable'); |
| assertFalse(nameDesc.enumerable, 'enumerable'); |
| assertFalse(nameDesc.writable, 'writable'); |
| assertThrows(function() { |
| 'use strict'; |
| throwTypeErrorFunction.name = 'foo'; |
| }, TypeError); |
| |
| var lengthDesc = |
| Object.getOwnPropertyDescriptor(throwTypeErrorFunction, 'length'); |
| assertFalse(lengthDesc.configurable, 'configurable'); |
| assertFalse(lengthDesc.enumerable, 'enumerable'); |
| assertFalse(lengthDesc.writable, 'writable'); |
| assertThrows(function() { |
| 'use strict'; |
| throwTypeErrorFunction.length = 42; |
| }, TypeError); |
| |
| assertTrue(Object.isFrozen(throwTypeErrorFunction)); |