1// Copyright 2013 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28var realmA = Realm.current(); 29var realmB = Realm.create(); 30assertEquals(0, realmA); 31assertEquals(1, realmB); 32 33// The global objects match the realms' this binding. 34assertSame(this, Realm.global(realmA)); 35assertSame(Realm.eval(realmB, "this"), Realm.global(realmB)); 36assertFalse(this === Realm.global(realmB)); 37 38// The global object is not accessible cross-realm. 39var x = 3; 40Realm.shared = this; 41assertThrows("Realm.eval(realmB, 'x')"); 42assertSame(undefined, Realm.eval(realmB, "this.x")); 43assertSame(undefined, Realm.eval(realmB, "Realm.shared.x")); 44 45Realm.eval(realmB, "Realm.global(0).y = 1"); 46assertThrows("y"); 47assertSame(undefined, this.y); 48 49// Can get or set other objects' properties cross-realm. 50var p = {a: 1}; 51var o = {__proto__: p, b: 2}; 52Realm.shared = o; 53assertSame(1, Realm.eval(realmB, "Realm.shared.a")); 54assertSame(2, Realm.eval(realmB, "Realm.shared.b")); 55 56// Cannot get or set a prototype cross-realm. 57assertSame(undefined, Realm.eval(realmB, "Realm.shared.__proto__")); 58 59Realm.eval(realmB, "Realm.shared.__proto__ = {c: 3}"); 60assertSame(1, o.a); 61assertSame(undefined, o.c); 62