This test will not work in Safari if it is loaded from local disk. Apparently Safari won't let us change the iframe src to a local file.

Note: This test makes a request to /cgi-bin/timeout.cgi. That cgi needs to be made executable for this test to work, and it won't work from local disk.

Expected result: In about 2 seconds, you should see a message like this below: DEBUG: Got a timeout callback (expcected result).