1 files changed, 28 insertions, 0 deletions
diff --git a/dom/media/webrtc/tests/mochitests/test_enumerateDevices_iframe.html b/dom/media/webrtc/tests/mochitests/test_enumerateDevices_iframe.html
new file mode 100644
index 0000000000..beea3a4f97
--- /dev/null
+++ b/dom/media/webrtc/tests/mochitests/test_enumerateDevices_iframe.html
@@ -0,0 +1,28 @@
+<!DOCTYPE HTML>
+<html>
+<body>
+<pre id="test">
+<script type="application/javascript">
+/**
+  Runs inside iframe in test_enumerateDevices.html.
+*/
+
+const pushPrefs = (...p) => SpecialPowers.pushPrefEnv({set: p});
+const gUM = c => navigator.mediaDevices.getUserMedia(c);
+
+(async () => {
+  await pushPrefs(["media.navigator.streams.fake", true]);
+
+  // Validate enumerated devices after gUM.
+  for (const track of (await gUM({video: true, audio: true})).getTracks()) {
+    track.stop();
+  }
+
+  const devices = await navigator.mediaDevices.enumerateDevices();
+  parent.postMessage(JSON.stringify(devices), "https://example.com:443");
+
+})().catch(e => setTimeout(() => { throw e; }));
+</script>
+</pre>
+</body>
+</html>