third_party/WebKit/LayoutTests/fast/events/message-port-deleted-frame.html

   1 <body>
   2 <p>Test that destroying a frame doesn't cause a crash when posting a message to a MessagePort it owned.</p>
   3 <pre id=log></pre>
   4 <script>
   5 function gc()
   6 {
   7     if (window.GCController)
   8         return GCController.collect();
   9
  10     for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
  11         var s = new String("abc");
  12     }
  13 }
  14
  15 function log(message)
  16 {
  17     document.getElementById("log").innerHTML += message + "<br>";
  18 }
  19
  20 if (window.testRunner) {
  21     testRunner.dumpAsText();
  22     testRunner.waitUntilDone();
  23 }
  24
  25 var mainPort;
  26 var frameDoc;
  27
  28 function test()
  29 {
  30     frameDoc = window.frames[0].document;
  31     var channel = new MessageChannel;
  32     window.frames[0].postMessage("msg", [channel.port2], "*");
  33     mainPort = channel.port1;
  34     mainPort.start();
  35
  36     mainPort.postMessage("ping");
  37     mainPort.onmessage = test2;
  38 }
  39
  40 function test2()
  41 {
  42     var frameElement = document.getElementsByTagName("iframe")[0];
  43     frameElement.parentNode.removeChild(frameElement);
  44     frameElement = null;
  45
  46     gc();
  47     setTimeout(test3, 10);
  48 }
  49
  50 function test3()
  51 {
  52     gc();
  53     mainPort.postMessage("ping");
  54     mainPort.onmessage = function(evt) {
  55         if (evt.data == "pong")
  56             log("Unexpected response: FAIL");
  57     };
  58     setTimeout(test4, 10);
  59 }
  60
  61 function test4()
  62 {
  63     log("Didn't crash: SUCCESS");
  64
  65     if (window.testRunner)
  66         testRunner.notifyDone();
  67 }
  68
  69 </script>
  70 <iframe src="resources/message-port-iframe.html" onload="test()"></iframe>
  71 </body>