1 files changed, 30 insertions, 0 deletions
diff --git a/dom/media/tests/mochitest/test_getUserMedia_trackCloneCleanup.html b/dom/media/tests/mochitest/test_getUserMedia_trackCloneCleanup.html
new file mode 100644
index 000000000..ae72b54a9
--- /dev/null
+++ b/dom/media/tests/mochitest/test_getUserMedia_trackCloneCleanup.html
@@ -0,0 +1,30 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <script type="application/javascript" src="mediaStreamPlayback.js"></script>
+</head>
+<body>
+<pre id="test">
+<script type="application/javascript">
+  "use strict";
+
+  createHTML({
+    title: "Stopping a MediaStreamTrack and its clones should deallocate the device",
+    bug: "1294605"
+  });
+
+  runTest(() => getUserMedia({audio: true, video: true}).then(stream => {
+    let clone = stream.clone();
+    stream.getTracks().forEach(t => t.stop());
+    stream.clone().getTracks().forEach(t => stream.addTrack(t));
+    is(stream.getTracks().filter(t => t.readyState == "live").length, 0,
+       "Cloning ended tracks should make them ended");
+    [...stream.getTracks(), ...clone.getTracks()].forEach(t => t.stop());
+
+    // Bug 1295352: better to be explicit about noGum here wrt future refactoring.
+    return noGum();
+  }));
+</script>
+</pre>
+</body>
+</html>