| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> postMessage(): read-only ports array </title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <div id=log></div> |
| <script> |
| |
| var TargetPort = null; |
| var description = "The postMessage() method - Make new ports into a read only array."; |
| |
| var t = async_test("Test Description: " + description); |
| |
| var channel = new MessageChannel(); |
| |
| TargetPort = channel.port2; |
| TargetPort.start(); |
| TargetPort.addEventListener("message", t.step_func(TestMessageEvent), true); |
| |
| var channel2 = new MessageChannel(); |
| |
| channel.port1.postMessage("ports", [channel2.port1]); |
| |
| function TestMessageEvent(evt) |
| { |
| var channel3 = new MessageChannel(); |
| evt.ports.push(channel3.port1); |
| evt.ports.push(channel3.port1); |
| |
| assert_equals(evt.ports.length, 1, "ports is a read only array with length == 1."); |
| t.done(); |
| } |
| </script> |
| </body> |
| </html> |
