<!DOCTYPE html>
<!--
This test was procedurally generated. Please do not modify it directly.
Sources:
- fetch/metadata/tools/fetch-metadata.conf.yml
- fetch/metadata/tools/templates/element-link-prefetch.optional.sub.html
-->
<html lang="en">
  <meta charset="utf-8">
  <meta name="timeout" content="long">
  <title>HTTP headers on request for HTML "link" element with rel="prefetch"</title>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
  <script src="/fetch/metadata/resources/helper.sub.js"></script>
  <body>
  <script>
  'use strict';

  /**
   * The `link` element supports a `load` event. That event would reliably
   * indicate that the browser had received the request. Multiple major
   * browsers do not implement the event, however, so in order to promote the
   * visibility of this test, a less efficient polling-based detection
   * mechanism is used.
   *
   * https://bugzilla.mozilla.org/show_bug.cgi?id=1638188
   * https://bugs.chromium.org/p/chromium/issues/detail?id=1083034
   */
  function induceRequest(t, url, attributes) {
    const link = document.createElement('link');
    link.setAttribute('rel', 'prefetch');
    link.setAttribute('href', url);

    for (const [ name, value ] of Object.entries(attributes)) {
      link.setAttribute(name, value);
    }

    document.head.appendChild(link);
    t.add_cleanup(() => link.remove());
  }

  setup(() => {
    assert_implements_optional(document.createElement('link').relList.supports('prefetch'));
  });

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpOrigin']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-site');
      });
  }, 'sec-fetch-site - Not sent to non-trustworthy same-origin destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpSameSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-site');
      });
  }, 'sec-fetch-site - Not sent to non-trustworthy same-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpCrossSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-site');
      });
  }, 'sec-fetch-site - Not sent to non-trustworthy cross-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpOrigin']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-mode');
      });
  }, 'sec-fetch-mode - Not sent to non-trustworthy same-origin destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpSameSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-mode');
      });
  }, 'sec-fetch-mode - Not sent to non-trustworthy same-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpCrossSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-mode');
      });
  }, 'sec-fetch-mode - Not sent to non-trustworthy cross-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpOrigin']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-dest');
      });
  }, 'sec-fetch-dest - Not sent to non-trustworthy same-origin destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpSameSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-dest');
      });
  }, 'sec-fetch-dest - Not sent to non-trustworthy same-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpCrossSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-dest');
      });
  }, 'sec-fetch-dest - Not sent to non-trustworthy cross-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpOrigin']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-user');
      });
  }, 'sec-fetch-user - Not sent to non-trustworthy same-origin destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpSameSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-user');
      });
  }, 'sec-fetch-user - Not sent to non-trustworthy same-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpCrossSite']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-user');
      });
  }, 'sec-fetch-user - Not sent to non-trustworthy cross-site destination no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpsOrigin', 'httpOrigin']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_not_own_property(headers, 'sec-fetch-site');
      });
  }, 'sec-fetch-site - HTTPS downgrade (header not sent) no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpOrigin', 'httpsOrigin']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_own_property(headers, 'sec-fetch-site');
          assert_array_equals(headers['sec-fetch-site'], ['cross-site']);
      });
  }, 'sec-fetch-site - HTTPS upgrade no attributes');

  promise_test((t) => {
    const key = '{{uuid()}}';

    induceRequest(
      t,
      makeRequestURL(key, ['httpsOrigin', 'httpOrigin', 'httpsOrigin']),
      {}
    );

    return retrieve(key, {poll:true})
      .then((headers) => {
          assert_own_property(headers, 'sec-fetch-site');
          assert_array_equals(headers['sec-fetch-site'], ['cross-site']);
      });
  }, 'sec-fetch-site - HTTPS downgrade-upgrade no attributes');
  </script>
  </body>
</html>

