third_party/WebKit/LayoutTests/media/gc-while-seeking.html

   1 <!DOCTYPE html>
   2 <title>GC while seeking</title>
   3 <script src="../resources/testharness.js"></script>
   4 <script src="../resources/testharnessreport.js"></script>
   5 <script src="media-file.js"></script>
   6 <script>
   7 async_test(function(t)
   8 {
   9     var a = document.createElement("audio");
  10     a.foo = "bar";
  11     a.src = findMediaFile("audio", "content/test");
  12     a.onsuspend = t.step_func(function()
  13     {
  14         assert_equals(a.networkState, a.NETWORK_IDLE);
  15         a.currentTime = a.duration / 2;
  16         assert_true(a.seeking);
  17         // Continue after a timeout since the current event target is the media
  18         // element, which means that it cannot be garbage collected now.
  19         setTimeout(t.step_func(gcAndAwaitSeeked), 0);
  20     });
  21     function gcAndAwaitSeeked()
  22     {
  23         if (!a.seeking) {
  24             // The seek may have already completed, in which case it's too late
  25             // to verify GC behavior. Since networkState is NETWORK_IDLE there's
  26             // no way to make the seek slower, making this test inherently racy.
  27             t.done();
  28         } else {
  29             a.onseeked = t.step_func(function(e)
  30             {
  31                 assert_greater_than(e.target.currentTime, 0);
  32                 assert_equals(e.target.foo, "bar");
  33                 t.done();
  34             });
  35             a = null;
  36             gc();
  37         }
  38     }
  39 });
  40 </script>