<!DOCTYPE html>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  'use strict';

  promise_test(async (t) => {
    await promise_rejects_dom(
        t, 'SecurityError', navigator.serial.requestPort(),
        'requestPort() should throw a SecurityError DOMException when called ' +
        'from a context where the top-level document has an opaque origin.');
  }, 'Calls to Serial APIs from an origin with opaque top origin get blocked.');
</script>
