This tests the order by which tasks are scheduled across documents of similar origins. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS logs.join(", ") is "1, 2, 3, 4, 5, 6" PASS internals.hasSameEventLoopAs(frame1.contentWindow) is true PASS internals.hasSameEventLoopAs(frame2.contentWindow) is true PASS successfullyParsed is true TEST COMPLETE