third_party/WebKit/LayoutTests/fast/events/message-port-gc-closed-cloned.html

   1 <!DOCTYPE html>
   2 <body>
   3 <script src="../../resources/js-test.js"></script>
   4 <script>
   5 jsTestIsAsync = true;
   6 description("MessagePorts (and their execution contexts) should be collected by GC once close() has been called on them");
   7 function runTest() {
   8     var channel = new MessageChannel();
   9     var port = channel.port1;
  10     port.onmessage = function() {
  11         iframeDocGC = internals.observeGC(document.querySelector('iframe').contentDocument);
  12         document.querySelector('iframe').remove();
  13         gc();
  14         shouldBeTrue("iframeDocGC.wasCollected");
  15         finishJSTest();
  16     };
  17     window.frames[0].postMessage("connect", "*", [channel.port2]);
  18 }
  19 </script>
  20 <iframe src="resources/message-port-gc-closed-cloned-iframe.html" onload="runTest()"></iframe>
  21 </body>