// Copyright JS Foundation and other contributors, http://js.foundation // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. function Box(data) { this._data = data; } var box = new Box('='); Object.defineProperty(Box.prototype, 'data', { get: function () { assert(this === box); return this._data; }, set: function (data) { assert(this === box); this._data = data; } }); assert(box.data === '='); box.data = '+'; assert(box.data === '+'); function test_access(value, proto) { "use strict" Object.defineProperty(proto, 'test', { get: function () { assert (this === value) }, set: function () { assert (this === value) } }); value.test; value.test = undefined; } test_access ("str", String.prototype); test_access (1, Number.prototype); test_access (true, Boolean.prototype);