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diff --git a/testing/web-platform/tests/picture-in-picture/leave-picture-in-picture.html b/testing/web-platform/tests/picture-in-picture/leave-picture-in-picture.html
new file mode 100644
index 0000000000..a0fbcb23e5
--- /dev/null
+++ b/testing/web-platform/tests/picture-in-picture/leave-picture-in-picture.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<title>Test leavepictureinpicture event</title>
+<meta name="timeout" content="long">
+<script src="/common/media.js"></script>
+<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="resources/picture-in-picture-helpers.js"></script>
+<body></body>
+<script>
+promise_test(async t => {
+  let pictureInPictureWindow;
+  const video = await loadVideo();
+
+  video.addEventListener('enterpictureinpicture', t.step_func_done(event => {
+    pictureInPictureWindow = event.pictureInPictureWindow;
+  }));
+
+  video.addEventListener('leavepictureinpicture', t.step_func_done(event => {
+    assert_equals(pictureInPictureWindow, event.pictureInPictureWindow);
+
+    assert_equals(event.target, video);
+    assert_equals(event.bubbles, true);
+    assert_equals(event.cancelable, false);
+    assert_equals(event.composed, false);
+    assert_equals(document.pictureInPictureElement, null);
+  }));
+
+  return requestPictureInPictureWithTrustedClick(video)
+  .then(() => document.exitPictureInPicture());
+}, 'leavepictureinpicture event is fired if document.exitPictureInPicture');
+
+promise_test(async t => {
+  let pictureInPictureWindow;
+  const video = await loadVideo();
+
+  video.addEventListener('enterpictureinpicture', t.step_func_done(event => {
+    pictureInPictureWindow = event.pictureInPictureWindow;
+  }));
+
+  video.addEventListener('leavepictureinpicture', t.step_func_done(event => {
+    assert_equals(pictureInPictureWindow, event.pictureInPictureWindow);
+    assert_equals(event.target, video);
+    assert_equals(event.bubbles, true);
+    assert_equals(event.cancelable, false);
+    assert_equals(event.composed, false);
+    assert_equals(document.pictureInPictureElement, null);
+  }));
+
+  return requestPictureInPictureWithTrustedClick(video)
+  .then(() => {
+    video.disablePictureInPicture = true;
+  });
+}, 'leavepictureinpicture event is fired if video.disablePictureInPicture is set to true');
+</script>