Tests that DOM timers gets throttled on hidden pages once they reach the max nesting level On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS internals.isTimerThrottled(timerHandle) is false PASS internals.isTimerThrottled(timerHandle) is false PASS internals.isTimerThrottled(timerHandle) is false PASS internals.isTimerThrottled(timerHandle) is false PASS internals.isTimerThrottled(timerHandle) is false PASS internals.isTimerThrottled(timerHandle) is true PASS successfullyParsed is true TEST COMPLETE