portals-nested.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:
- /portals/portals-nested.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<body>

  <script>

    promise_test(() => {

      assert_implements("HTMLPortalElement" in self);

      var portal = document.createElement("portal");

      portal.src = "resources/portals-nested-portal.html";

      document.body.appendChild(portal);

      var waitForMessage = new Promise((resolve, reject) => {

        portal.onmessage = resolve;

});

      return waitForMessage;

    }, "nested portals shouldn't crash");

  </script>

</body>