The Tor Browser: js/xpconnect/tests/unit/test_tearoffs.js@129ffea94266 (annotated)

js/xpconnect/tests/unit/test_tearoffs.js@129ffea94266 (annotated)

js/xpconnect/tests/unit/test_tearoffs.js

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 const Cc = Components.classes;
 const Ci = Components.interfaces;
 function run_test() {
   // Load the component manifest containing our test interface implementations.
   Components.manager.autoRegister(do_get_file('../components/js/xpctest.manifest'));
   // Shortcut the interfaces we're using.
   var ifs = {
     a: Ci['nsIXPCTestInterfaceA'],
     b: Ci['nsIXPCTestInterfaceB'],
     c: Ci['nsIXPCTestInterfaceC']
   };
   // Shortcut the class we're instantiating. This implements all three interfaces.
   var cls = Cc["@mozilla.org/js/xpc/test/js/TestInterfaceAll;1"];
   // Run through the logic a few times.
   for (i = 0; i < 2; ++i)
     play_with_tearoffs(ifs, cls);
 }
 function play_with_tearoffs(ifs, cls) {
   // Allocate a bunch of objects, QI-ed to B.
   var instances = [];
   for (var i = 0; i < 300; ++i)
     instances.push(cls.createInstance(ifs.b));
   // Nothing to collect.
   gc();
   // QI them to A.
   instances.forEach(function(v, i, a) { v.QueryInterface(ifs.a); });
   // QI them to C.
   instances.forEach(function(v, i, a) { v.QueryInterface(ifs.c); });
   // Check
   do_check_true('name' in instances[10], 'Have the prop from A/B');
   do_check_true('someInteger' in instances[10], 'Have the prop from C');
   // Grab tearoff reflections for a and b.
   var aTearOffs = instances.map(function(v, i, a) { return v.nsIXPCTestInterfaceA; } );
   var bTearOffs = instances.map(function(v, i, a) { return v.nsIXPCTestInterfaceB; } );
   // Check
   do_check_true('name' in aTearOffs[1], 'Have the prop from A');
   do_check_true(!('someInteger' in aTearOffs[1]), 'Dont have the prop from C');
   // Nothing to collect.
   gc();
   // Null out every even instance pointer.
   for (var i = 0; i < instances.length; ++i)
     if (i % 2 == 0)
         instances[i] = null;
   // Nothing to collect, since we still have the A and B tearoff reflections.
   gc();
   // Null out A tearoff reflections that are a multiple of 3.
   for (var i = 0; i < aTearOffs.length; ++i)
     if (i % 3 == 0)
         aTearOffs[i] = null;
   // Nothing to collect, since we still have the B tearoff reflections.
   gc();
   // Null out B tearoff reflections that are a multiple of 5.
   for (var i = 0; i < bTearOffs.length; ++i)
     if (i % 5 == 0)
         bTearOffs[i] = null;
   // This should collect every 30th object (indices that are multiples of 2, 3, and 5).
   gc();
   // Kill the b tearoffs entirely.
   bTearOffs = 0;
   // Collect more.
   gc();
   // Get C tearoffs.
   var cTearOffs = instances.map(function(v, i, a) { return v ? v.nsIXPCTestInterfaceC : null; } );
   // Check.
   do_check_true(!('name' in cTearOffs[1]), 'Dont have the prop from A');
   do_check_true('someInteger' in cTearOffs[1], 'have the prop from C');
   // Null out the a tearoffs.
   aTearOffs = null;
   // Collect all even indices.
   gc();
   // Collect all indices.
   instances = null;
   gc();
   // Give ourselves a pat on the back. :-)
   do_check_true(true, "Got all the way through without crashing!");
 }