// Copyright (C) 2013 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 19.1.2.4 description: > Symbol used as property for writable data property definition ---*/ var sym = Symbol(); var obj = {}; Object.defineProperty(obj, sym, { value: 1, writable: true }); assert.sameValue(sym in obj, true, "The result of `sym in obj` is `true`"); assert.sameValue( Object.hasOwnProperty.call(obj, sym), true, "`Object.hasOwnProperty.call(obj, sym)` returns `true`" ); var desc = Object.getOwnPropertyDescriptor(obj, sym); assert.sameValue(desc.value, 1, "The value of `desc.value` is `1`"); assert.sameValue(desc.configurable, false, "The value of `desc.configurable` is `false`"); assert.sameValue(desc.writable, true, "The value of `desc.writable` is `true`"); assert.sameValue(desc.enumerable, false, "The value of `desc.enumerable` is `false`"); assert.sameValue( Object.prototype.propertyIsEnumerable.call(obj, sym), false, "`Object.prototype.propertyIsEnumerable.call(obj, sym)` returns `false`" ); obj[sym] = 2; assert.sameValue(obj[sym], 2, "The value of `obj[sym]` is `2`");