1// Copyright JS Foundation and other contributors, http://js.foundation 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15var emptyObject = {} 16 17var propertyDescriptor = { 18 enumerable: true, 19 configurable: true, 20 value: "hello!", 21 writable: true 22} 23 24Object.defineProperty(emptyObject, 'myProperty', propertyDescriptor); 25 26var isWritable = false; 27var isEnumerable = false; 28var isConfigurable = false; 29 30emptyObject.myProperty = "foobar"; 31if (emptyObject.myProperty == "foobar") 32 isWritable = true; 33 34for (p in emptyObject) { 35 if (emptyObject[p] == "foobar") { 36 isEnumerable = true; 37 break; 38 } 39} 40 41if (delete emptyObject.myProperty) 42 isConfigurable = true; 43 44assert(isWritable && isEnumerable && isConfigurable); 45