first-meta-changed-after-second-added.http.html

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This WPT test may be referenced by the following Test IDs:
- /referrer-policy/generic/first-meta-changed-after-second-added.http.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

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

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

  <meta name="referrer" content="no-referrer" id="referrermeta">

</head>

<body>

  <script>

    async function fetchAndGetReferrer() {

      let response = await fetch('/common/security-features/subresource/xhr.py');

      let data = await response.json();

      return data.headers.referer;

    promise_test(async t => {

      assert_equals(await fetchAndGetReferrer(), undefined,

                    'referrer should not be set');

      // Add second meta _before_ first meta.

      const first_meta = document.getElementById('referrermeta');

      const second_meta = document.createElement('meta');

      second_meta.name = 'referrer';

      second_meta.content = 'strict-origin';

      document.head.appendChild(second_meta);

      assert_equals(await fetchAndGetReferrer(), window.location.origin + '/',

                    'referrer should be origin only');

      // Update content attribute of first meta.

      first_meta.content = 'unsafe-url';

      assert_equals(await fetchAndGetReferrer(), window.location.href,

                    'referrer should be full url');

      }, 'document referrer policy is the value of the most recently modified <meta name="referrer"');

  </script>

</body>