1 CONSOLE WARNING: Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check http://xhr.spec.whatwg.org/.
2 Test that a network namespace trumps a fallback namespace where they overlap.
4 Sanity check the presence of the fallback namespace, should get the fallback resource.
5 Getting a network namespace resource that exists on the server, should succeed.
6 Getting a network namespace resource that does not exist on the server, should get a 404.
7 Creating two iframes for an existing and non-existing page, one should say "hello" the other should 404.