| This test checks whether shared workers exit when the parent document closes | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS Frame1 closed, shared workers kept running | |
| PASS Frame2 closed, shared worker2 exited | |
| PASS Frame3 closed, shared worker3 exited | |
| PASS Frame4 closed, all workers closed | |
| TEST COMPLETE | |