// Copyright 2014 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.functiontestJSONToString(){assertEquals('[object JSON]',""+JSON);assertEquals("JSON",JSON[Symbol.toStringTag]);vardesc=Object.getOwnPropertyDescriptor(JSON,Symbol.toStringTag);assertTrue(desc.configurable);assertFalse(desc.writable);assertEquals("JSON",desc.value);