LayoutTests/fast/events/wheelevent-in-reattached-frame.html

   1 <!DOCTYPE html>
   2
   3 <html>
   4 <head>
   5     <style>
   6     </style>
   7     <script src="../../resources/js-test-pre.js"></script>
   8     <script>
   9     </script>
  10 </head>
  11 <body>
  12
  13     <script>
  14     if (window.testRunner)
  15         testRunner.waitUntilDone();
  16
  17     description("Tests that detaching and reattaching a frame with a wheel event handlers doesn't crash.");
  18
  19     const maxLoads = 10;
  20     var loadCount = 0;
  21
  22     var frame;
  23     function makeFrame()
  24     {
  25         frame = document.createElement('iframe');
  26         frame.addEventListener('load', function() {
  27             if (window.internals)
  28                 shouldBe("internals.wheelEventHandlerCount()", "0");
  29
  30             frame.remove();
  31             window.setTimeout(checkFrameRemoved, 0);
  32         });
  33
  34         frame.src = 'resources/wheel-event-handlers-dynamic.html';
  35         addFrameToDocument(frame);
  36     }
  37
  38     function checkFrameRemoved()
  39     {
  40         gc();
  41
  42         if (window.internals)
  43             shouldBe("internals.wheelEventHandlerCount()", "0");
  44
  45         if (++loadCount == maxLoads) {
  46             isSuccessfullyParsed();
  47             if (window.testRunner)
  48                 testRunner.notifyDone();
  49
  50             return;
  51         }
  52
  53         window.setTimeout(function() {
  54             addFrameToDocument(frame);
  55         }, 0);
  56     }
  57
  58     function addFrameToDocument(frame)
  59     {
  60         document.body.appendChild(frame);
  61     }
  62
  63     makeFrame();
  64     </script>
  65 </body>
  66 </html>