<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
promise_test(async () => {
  assert_implements('HTMLPortalElement' in self, 'HTMLPortalElement is required for this test');
  let portal = document.createElement('portal');
  let referrerPromise = new Promise((resolve, reject) => {
    portal.addEventListener('message', e => resolve(e.data), {once: true});
  });
  portal.src = 'resources/postmessage-referrer.sub.html';
  document.body.appendChild(portal);
  try {
    let {httpReferrer, documentReferrer} = await referrerPromise;
    assert_equals(httpReferrer, location.href, 'HTTP Referer header should be sent by default');
    assert_equals(documentReferrer, location.href, 'document.referrer should be present by default');
  } finally {
    document.body.removeChild(portal);
  }
}, "portal contents should be loaded with referrer");

promise_test(async () => {
  assert_implements('HTMLPortalElement' in self, 'HTMLPortalElement is required for this test');
  let portal = document.createElement('portal');
  portal.referrerPolicy = 'no-referrer';
  let referrerPromise = new Promise((resolve, reject) => {
    portal.addEventListener('message', e => resolve(e.data), {once: true});
  });
  portal.src = 'resources/postmessage-referrer.sub.html';
  document.body.appendChild(portal);
  try {
    let {httpReferrer, documentReferrer} = await referrerPromise;
    assert_equals(httpReferrer, 'no-http-referrer', 'No HTTP Referer header should be sent');
    assert_equals(documentReferrer, 'no-document-referrer', 'No document.referrer should be present');
  } finally {
    document.body.removeChild(portal);
  }
}, "portal contents should be loaded with no referrer if referrerpolicy=no-referrer");

promise_test(async () => {
  assert_implements('HTMLPortalElement' in self, 'HTMLPortalElement is required for this test');
  let portal = document.createElement('portal');
  portal.referrerPolicy = 'origin';
  let referrerPromise = new Promise((resolve, reject) => {
    portal.addEventListener('message', e => resolve(e.data), {once: true});
  });
  portal.src = 'resources/postmessage-referrer.sub.html';
  document.body.appendChild(portal);
  try {
    let {httpReferrer, documentReferrer} = await referrerPromise;
    assert_equals(httpReferrer, location.origin + '/', 'HTTP Referer header should contain origin');
    assert_equals(documentReferrer, location.origin + '/', 'document.referrer should contain origin');
  } finally {
    document.body.removeChild(portal);
  }
}, "portal contents should be loaded with origin only if referrerpolicy=origin");

// This is not exhaustive coverage of all possible policies, which are tested elsewhere.
</script>
</body>