beforeunload-is-disabled.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /document-picture-in-picture/beforeunload-is-disabled.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Test that onbeforeunload is disabled for document picture in picture</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 from top window');

      const pipWindow = await documentPictureInPicture.requestWindow();

      var onbeforeunloadDisabled = true;

      pipWindow.onbeforeunload = () => {

        onbeforeunloadDisabled = false;

        return "This is a test";

      pipWindow.close();

      assert_true(onbeforeunloadDisabled, 'onbeforeunload should be disabled for document picture in picture');

});

  </script>

</body>