| <!DOCTYPE html> |
| <title> postMessage(): read-only ports array </title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id=log></div> |
| <script> |
| async_test(function(t) { |
| var channel = new MessageChannel(); |
| var targetPort = channel.port2; |
| targetPort.start(); |
| targetPort.addEventListener("message", t.step_func_done(function(e) { |
| var channel3 = new MessageChannel(); |
| e.ports.push(channel3.port1); |
| e.ports.push(channel3.port1); |
| assert_equals(e.ports.length, 1, "ports is a read only array with length == 1."); |
| }), true); |
| var channel2 = new MessageChannel(); |
| channel.port1.postMessage("ports", [channel2.port1]); |
| }); |
| </script> |
