third_party/WebKit/LayoutTests/fast/events/message-port-no-wrapper.html

   1 <body>
   2 <p>Test that delivering a message to a port that was never referenced from JS doesn't cause a crash.</p>
   3 <pre id=log></pre>
   4
   5 <script>
   6 function gc()
   7 {
   8     if (window.GCController)
   9         return GCController.collect();
  10
  11     for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
  12         var s = new String("abc");
  13     }
  14 }
  15
  16 function log(message)
  17 {
  18     document.getElementById("log").innerHTML += message + "<br>";
  19 }
  20
  21 if (window.testRunner) {
  22     testRunner.dumpAsText();
  23     testRunner.waitUntilDone();
  24 }
  25
  26 var channel = new MessageChannel;
  27 channel.port1.postMessage("msg");
  28 channel.port1.start();
  29 channel = 0;
  30 gc();
  31
  32 setTimeout("log('PASS'); if (window.testRunner) testRunner.notifyDone()", 100);
  33
  34 </script>
  35 </body>