LayoutTests/fast/events/wheelevent-in-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 a frame with a wheel event handlers doesn't crash.");
  18
  19     const maxLoads = 10;
  20     var loadCount = 0;
  21
  22     function makeFrame()
  23     {
  24         var frame = document.createElement('iframe');
  25         frame.addEventListener('load', function() {
  26             if (window.internals)
  27                 shouldBe("internals.wheelEventHandlerCount()", "0");
  28
  29             frame.remove();
  30             window.setTimeout(checkFrameRemoved, 0);
  31         });
  32
  33         frame.src = 'resources/wheel-event-handler-on-document.html';
  34         addFrameToDocument(frame);
  35     }
  36
  37     function checkFrameRemoved()
  38     {
  39         gc();
  40
  41         if (window.internals)
  42             shouldBe("internals.wheelEventHandlerCount()", "0");
  43
  44         if (++loadCount == maxLoads) {
  45             isSuccessfullyParsed();
  46             if (window.testRunner)
  47                 testRunner.notifyDone();
  48
  49             return;
  50         }
  51
  52         window.setTimeout(makeFrame, 0);
  53     }
  54
  55     function addFrameToDocument(frame)
  56     {
  57         document.body.appendChild(frame);
  58     }
  59
  60     makeFrame();
  61     </script>
  62 </body>
  63 </html>