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 |   1 <!doctype html> | 
 |   2 <html> | 
 |   3     <head> | 
 |   4         <title>AudioTrackList & VideoTrackList.getTrackById</title> | 
 |   5         <script src="../../resources/testharness.js"></script> | 
 |   6         <script src="../../resources/testharnessreport.js"></script> | 
 |   7         <script src="../media-file.js"></script> | 
 |   8     </head> | 
 |   9     <body> | 
 |  10         <div id="log"></div> | 
 |  11         <script> | 
 |  12             async_test(function(t) | 
 |  13             { | 
 |  14                 var e = document.createElement('video'); | 
 |  15  | 
 |  16                 assert_equals(e.audioTracks.length, 0); | 
 |  17                 assert_equals(e.audioTracks.getTrackById(''), null); | 
 |  18  | 
 |  19                 assert_equals(e.videoTracks.length, 0); | 
 |  20                 assert_equals(e.videoTracks.getTrackById(''), null); | 
 |  21  | 
 |  22                 e.src = findMediaFile('video', '../content/test'); | 
 |  23  | 
 |  24                 e.addEventListener('loadedmetadata', t.step_func(function() | 
 |  25                 { | 
 |  26                     assert_equals(e.audioTracks.length, 1); | 
 |  27                     assert_equals(e.audioTracks.getTrackById(e.audioTracks[0].id
    ), e.audioTracks[0]); | 
 |  28                     assert_equals(e.audioTracks.getTrackById('fake-id'), null); | 
 |  29  | 
 |  30                     assert_equals(e.videoTracks.length, 1); | 
 |  31                     assert_equals(e.videoTracks.getTrackById(e.videoTracks[0].id
    ), e.videoTracks[0]); | 
 |  32                     assert_equals(e.videoTracks.getTrackById('fake-id'), null); | 
 |  33  | 
 |  34                     t.done(); | 
 |  35                 })); | 
 |  36             }); | 
 |  37         </script> | 
 |  38     </body> | 
 |  39 </html> | 
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