| Tests various use cases when cloning MessagePorts. | |
| Should be a series of SUCCESS messages, followed with DONE. | |
| SUCCESS: Posting port to itself: Error: InvalidStateError: DOM Exception 11 | |
| SUCCESS: Posting entangled port: Error: InvalidStateError: DOM Exception 11 | |
| SUCCESS: Posting cloned port. | |
| SUCCESS: Posted messages to cloned port. | |
| SUCCESS: Cloned both endpoints of a channel. | |
| SUCCESS: Got closed port with event message closed | |
| DONE | |