document-picture-in-picture/requires-width-and-height-to-both-be-specified.https.html

<!DOCTYPE html>
<title>Test that documentPictureInPicture.requestWindow()
  fails if width or height is specified without the other</title>
<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>
<body>
<script>
promise_test(async t => {
  await test_driver.bless('request PiP window');
  await promise_rejects_js(t, RangeError,
documentPictureInPicture.requestWindow({width: 500}));
},
    "requestWindow should fail when width is specified without height");

promise_test(async t => {
  await test_driver.bless('request PiP window');
  await promise_rejects_js(t, RangeError,
documentPictureInPicture.requestWindow({height: 300}));
},
    "requestWindow should fail when height is specified without width");
</script>
</body>