This is a testharness.js-based test.
PASS Message sent to closed port should not arrive. 
PASS Message sent from closed port should not arrive. 
PASS Message sent to closed port from transferred port should not arrive. 
FAIL Message sent from transferred closed port should not arrive. assert_unreached: Should not have delivered message Reached unreachable code
PASS Inflight messages should be delivered even when sending port is closed afterwards. 
PASS Close in onmessage should not cancel inflight messages. 
Harness: the test ran to completion.

