1 files changed, 18 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/media-elements/interfaces/TextTrackList/length.html b/testing/web-platform/tests/html/semantics/embedded-content/media-elements/interfaces/TextTrackList/length.html
new file mode 100644
index 0000000000..7a24130d10
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/embedded-content/media-elements/interfaces/TextTrackList/length.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<title>TextTrackList.length</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id=log></div>
+<script>
+setup(function(){
+    window.video = document.createElement('video');
+    video.addTextTrack('subtitles');
+    window.track = document.createElement('track');
+    video.appendChild(track);
+    video.addTextTrack('subtitles');
+});
+test(function(){
+    assert_equals(video.textTracks.length, 3);
+});
+
+</script>