v8/test/mjsunit/realm-property-access.js
littledan 9778f2efad Expose a way to make a same-origin realm
Some tests, e.g. in test262, want to create a new same-origin
realm. This patch exposes a new function,
Realm.createAllowCrossRealmAccess(), which vends a new realm with
the same security token as the currently executing one.

Review-Url: https://codereview.chromium.org/1973363004
Cr-Commit-Position: refs/heads/master@{#36561}
2016-05-27 18:50:16 +00:00

21 lines
675 B
JavaScript

// Copyright 2016 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.
var r = Realm.create();
var f = Realm.eval(r, "function f() { return this }; f()");
assertEquals(f, Realm.global(r));
// Cross-origin property access throws
assertThrows(() => f.a, TypeError);
assertThrows(() => { 'use strict'; f.a = 1 }, TypeError);
var r2 = Realm.createAllowCrossRealmAccess();
var f2 = Realm.eval(r2, "function f() { return this }; f()");
assertEquals(f2, Realm.global(r2));
// Same-origin property access doesn't throw
assertEquals(undefined, f2.a);
f2.a = 1;
assertEquals(1, f2.a);