<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=1018933 --> <head> <meta charset='utf-8'> <title>Regression test for bug 1018933 - HTMLTrackElement should create only one TextTrack</title> <script type="text/javascript" src="/MochiKit/MochiKit.js"></script> <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <p id="display"></p> <div id="content"> </div> <pre id="test"> <script class="testbody" type="text/javascript"> SimpleTest.waitForExplicitFinish(); var video = document.createElement("video"); video.src = "seek.webm"; video.preload = "auto"; var trackElement = document.createElement("track"); trackElement.src = "basic.vtt"; trackElement.kind = "subtitles"; document.getElementById("content").appendChild(video); video.appendChild(trackElement); // Accessing the track now would have caused the bug as the track element // shouldn't have had time to bind to the tree yet. trackElement.track.mode = 'showing'; video.addEventListener("loadedmetadata", function run_tests() { // Re-que run_tests() at the end of the event loop until the track // element has loaded its data. if (trackElement.readyState == 1) { setTimeout(run_tests, 0); return; } is(video.textTracks.length, 1, "Video should have one TextTrack."); SimpleTest.finish(); }); </script> </pre> </body> </html>