'use strict'; // 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 default data property definition flags: [onlyStrict] features: [Symbol] includes: [propertyHelper.js] ---*/ var sym = Symbol(); var obj = {}; Object.defineProperty(obj, sym, { value: 1, }); assert.sameValue(sym in obj, true, "The result of `sym in obj` is `true`"); verifyProperty(obj, sym, { value: 1, configurable: false, writable: false, enumerable: false, }); assert.sameValue( Object.prototype.propertyIsEnumerable.call(obj, sym), false, "`Object.prototype.propertyIsEnumerable.call(obj, sym)` returns `false`" ); assert.throws(TypeError, function() { delete obj[sym]; }); assert.notSameValue( Object.getOwnPropertyDescriptor(obj, sym), undefined, "`Object.getOwnPropertyDescriptor(obj, sym)` does not return `undefined`" ); assert.throws(TypeError, function() { obj[sym] = 2; }); assert.sameValue(obj[sym], 1, "The value of `obj[sym]` is `1`"); reportCompare(0, 0);