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diff --git a/testing/web-platform/tests/mediacapture-streams/MediaStream-clone.https.html b/testing/web-platform/tests/mediacapture-streams/MediaStream-clone.https.html
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+++ b/testing/web-platform/tests/mediacapture-streams/MediaStream-clone.https.html
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+<!doctype html>
+<html>
+<head>
+<title>MediaStream and MediaStreamTrack clone()</title>
+<link rel="help" href="https://w3c.github.io/mediacapture-main/#dom-mediastream-clone">
+<link rel="help" href="https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack-clone">
+</head>
+<body>
+<p class="instructions">When prompted, accept to give permission to use your audio and video devices.</p>
+<h1 class="instructions">Description</h1>
+<p class="instructions">This test checks that cloning MediaStreams and MediaStreamTracks works as expected.</p>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=/resources/testdriver.js></script>
+<script src=/resources/testdriver-vendor.js></script>
+<script src=permission-helper.js></script>
+<script>
+
+promise_test(async t => {
+  await setMediaPermission();
+  const stream = await navigator.mediaDevices.getUserMedia({video: true, audio: true});
+  assert_equals(stream.getAudioTracks().length, 1);
+  assert_equals(stream.getVideoTracks().length, 1);
+
+  const clone1 = stream.clone();
+  assert_equals(clone1.getAudioTracks().length, 1);
+  assert_equals(clone1.getVideoTracks().length, 1);
+  assert_not_equals(stream.getAudioTracks()[0].id, clone1.getAudioTracks()[0].id);
+  assert_not_equals(stream.getVideoTracks()[0].id, clone1.getVideoTracks()[0].id);
+
+  stream.getTracks().forEach(track => track.stop());
+  assert_false(stream.active);
+  assert_equals(stream.getAudioTracks()[0].readyState, "ended");
+  assert_equals(stream.getVideoTracks()[0].readyState, "ended");
+  assert_true(clone1.active);
+  assert_equals(clone1.getAudioTracks()[0].readyState, "live");
+  assert_equals(clone1.getVideoTracks()[0].readyState, "live");
+
+  clone1.getAudioTracks()[0].stop();
+  assert_true(clone1.active);
+  assert_equals(clone1.getAudioTracks()[0].readyState, "ended");
+  assert_equals(clone1.getVideoTracks()[0].readyState, "live");
+
+  const clone2 = clone1.clone();
+  assert_true(clone2.active);
+  assert_equals(clone2.getAudioTracks()[0].readyState, "ended");
+  assert_equals(clone2.getVideoTracks()[0].readyState, "live");
+
+  clone1.getVideoTracks()[0].stop();
+  clone2.getVideoTracks()[0].stop();
+
+  const clone3 = clone2.clone();
+  assert_false(clone3.active);
+  assert_equals(clone3.getAudioTracks()[0].readyState, "ended");
+  assert_equals(clone3.getVideoTracks()[0].readyState, "ended");
+  assert_not_equals(clone1.getAudioTracks()[0].id, clone2.getAudioTracks()[0].id);
+  assert_not_equals(clone1.getVideoTracks()[0].id, clone2.getVideoTracks()[0].id);
+  assert_not_equals(clone2.getAudioTracks()[0].id, clone3.getAudioTracks()[0].id);
+  assert_not_equals(clone2.getVideoTracks()[0].id, clone3.getVideoTracks()[0].id);
+  assert_not_equals(clone1.getAudioTracks()[0].id, clone3.getAudioTracks()[0].id);
+  assert_not_equals(clone1.getVideoTracks()[0].id, clone3.getVideoTracks()[0].id);
+}, "Tests that cloning MediaStream objects works as expected");
+
+promise_test(async t => {
+  const stream = await navigator.mediaDevices.getUserMedia({video: true, audio: true});
+  assert_equals(stream.getAudioTracks().length, 1);
+  assert_equals(stream.getVideoTracks().length, 1);
+  assert_equals(stream.getAudioTracks()[0].readyState, "live");
+  assert_equals(stream.getVideoTracks()[0].readyState, "live");
+  assert_true(stream.active);
+
+  const audio_clone = stream.getAudioTracks()[0].clone();
+  const video_clone = stream.getVideoTracks()[0].clone();
+  assert_equals(audio_clone.readyState, "live");
+  assert_equals(video_clone.readyState, "live");
+  assert_not_equals(stream.getAudioTracks()[0].id, audio_clone.id);
+  assert_not_equals(stream.getVideoTracks()[0].id, video_clone.id);
+
+  stream.getTracks().forEach(track => track.stop());
+  assert_false(stream.active);
+  assert_equals(stream.getAudioTracks()[0].readyState, "ended");
+  assert_equals(stream.getVideoTracks()[0].readyState, "ended");
+  assert_equals(audio_clone.readyState, "live");
+  assert_equals(video_clone.readyState, "live");
+
+  stream.addTrack(audio_clone);
+  stream.addTrack(video_clone);
+  assert_true(stream.active);
+
+  stream.getTracks().forEach(track => track.stop());
+  assert_false(stream.active);
+  assert_equals(audio_clone.readyState, "ended");
+  assert_equals(video_clone.readyState, "ended");
+}, "Tests that cloning MediaStreamTrack objects works as expected");
+
+</script>
+</body>
+</html>