| <body> |
| <p>Tests various use cases when cloning MessagePorts.</p> |
| <p>Should be a series of SUCCESS messages, followed with DONE.</p> |
| <pre id=log></pre> |
| <script> |
| |
| function gc() |
| { |
| if (window.GCController) |
| return GCController.collect(); |
| |
| for (var i = 0; i < 10000; i++) { // force garbage collection (FF requires about 9K allocations before a collect). |
| var s = new String("abc"); |
| } |
| } |
| |
| function log(message) |
| { |
| document.getElementById("log").innerHTML += message + "<br>"; |
| } |
| |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| var channel = new MessageChannel; |
| channel.port1.onmessage = channel.port2.onmessage = function(evt) { |
| fail("FAIL: Should not have received message: " + evt.data); |
| } |
| try { |
| channel.port1.postMessage("msg", [channel.port1]); |
| log("FAIL: Posting port to itself should throw an exception."); |
| } catch (ex) { |
| log("SUCCESS: Posting port to itself: " + ex); |
| } |
| |
| try { |
| channel.port1.postMessage("msg", [channel.port2]); |
| log("FAIL: Posting port to entangled pair should throw an exception."); |
| } catch (ex) { |
| log("SUCCESS: Posting entangled port: " + ex); |
| } |
| |
| channel = new MessageChannel; |
| var channel2 = new MessageChannel; |
| channel.port1.postMessage("msg", [channel2.port1]); |
| |
| // Should not be able to post a cloned port. |
| try { |
| channel.port1.postMessage("msg", [channel2.port1]); |
| log("FAIL: Posting cloned port should throw an exception."); |
| } catch (ex) { |
| log("SUCCESS: Posting cloned port."); |
| } |
| |
| // Test posting messages to a port in cloned state. |
| |
| var channel = new MessageChannel; |
| var channel2 = new MessageChannel; |
| |
| // Post messages before and after clone to make sure ordering is preserved and all messages are received. |
| channel2.port2.postMessage("1"); |
| channel.port1.postMessage("msg", [channel2.port1]); |
| channel2.port2.postMessage("2"); |
| channel2.port2.postMessage("3"); |
| channel.port2.onmessage = function(evt) { |
| var messageIndex = 1; |
| if (evt.ports.length != 1) |
| log("FAIL: Got message without wrong number of ports: " + evt.ports.length); |
| evt.ports[0].onmessage = function(evt) { |
| if (evt.data != messageIndex) |
| log("FAIL: Got message " + evt.data + ", expected " + messageIndex); |
| messageIndex++; |
| if (messageIndex == 4) { |
| log("SUCCESS: Posted messages to cloned port."); |
| testDoublyClonedPort(); |
| } |
| } |
| } |
| |
| function testDoublyClonedPort() |
| { |
| var channel = new MessageChannel; |
| var channel2 = new MessageChannel; |
| channel.port1.postMessage("msg", [channel2.port1]); |
| channel.port2.postMessage("msg", [channel2.port2]); |
| gc(); |
| channel.port1.onmessage = function(evt) { |
| evt.ports[0].postMessage("testme"); |
| } |
| channel.port2.onmessage = function(evt) { |
| evt.ports[0].onmessage = function (evt) { |
| if (evt.data == "testme") |
| log("SUCCESS: Cloned both endpoints of a channel."); |
| else |
| log("FAIL: Invalid message arrived: " + evt.data); |
| testPostClosePort(); |
| } |
| } |
| |
| } |
| |
| // *Should* be able to post a closed port. |
| function testPostClosePort() |
| { |
| var channel = new MessageChannel; |
| var channel2 = new MessageChannel; |
| channel2.port2.close(); |
| channel.port1.postMessage("closed", [channel2.port2]); |
| channel.port2.onmessage = function(evt) { |
| if (!evt.ports || evt.ports.length != 1) |
| log("FAIL: Closed port not sent."); |
| else if (evt.data != "closed") |
| log("FAIL: Unexpected message: " + evt.data); |
| else |
| log("SUCCESS: Got closed port with event message " + evt.data); |
| done(); |
| } |
| } |
| |
| function done() |
| { |
| log("DONE"); |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| </script> |
| </body> |
