third_party/WebKit/LayoutTests/fast/events/message-port-constructor-for-deleted-document.html

   1 <body>
   2 <p>Test that destroying a document doesn't cause a crash when executing MessageChannel constructor saved from its Window object.</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 constructor;
  26
  27 function test()
  28 {
  29     constructor = window.frames[0].MessageChannel;
  30
  31     var frameElement = document.getElementsByTagName("iframe")[0];
  32     frameElement.parentNode.removeChild(frameElement);
  33     frameElement = null;
  34
  35     gc();
  36     setTimeout(test2, 10);
  37 }
  38
  39 function test2()
  40 {
  41     gc();
  42     try {
  43         new constructor;
  44     } catch (ex) {
  45     }
  46
  47     log("Didn't crash: SUCCESS");
  48
  49     if (window.testRunner)
  50         testRunner.notifyDone();
  51 }
  52
  53 </script>
  54 <iframe src="resources/message-port-iframe.html" onload="test()"></iframe>
  55 </body>