src/third_party/WebKit/LayoutTests/media/track/tracklist-is-reachable-no-crash.html

   1 <!DOCTYPE html>
   2 <html>
   3     <head>
   4         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   5
   6         <script src=../media-file.js></script>
   7         <script src=../video-test.js></script>
   8         <script>
   9             var tracks;
  10
  11             function handler()
  12             {
  13                 consoleWrite("PASS (no crash)");
  14             }
  15
  16             function start()
  17             {
  18                 var video = document.createElement("video");
  19
  20                 consoleWrite("** Register an event handler on video element's TextTrackList.");
  21                 tracks = video.textTracks;
  22                 tracks.onaddtrack = handler;
  23
  24                 // Clear 'video' to bring about its release (non-Oilpan.)
  25                 video = null;
  26                 consoleWrite("<br>** Force garbage collection.");
  27                 gc();
  28                 consoleWrite("** Inspect and invoke the handler.");
  29                 testExpected("tracks.onaddtrack", handler);
  30                 tracks.onaddtrack();
  31                 consoleWrite("");
  32                 endTest();
  33             }
  34
  35         </script>
  36     </head>
  37     <body onload="start()">
  38         <p>Test that a detached TextTrackList can still be used without crashing.</p>
  39     </body>
  40 </html>