redirect.https.sub.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /speculation-rules/prefetch/client-hints/redirect.https.sub.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta name="timeout" content="long">

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

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

<script src="/common/dispatcher/dispatcher.js"></script>

<script src="/common/utils.js"></script>

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

<script src="../resources/utils.sub.js"></script>

<script src="/common/get-host-info.sub.js"></script>

<script src="/client-hints/accept-ch-stickiness/resources/accept-ch-test.js"></script>

<script>

setup(() => assertSpeculationRulesIsSupported());

// Both of the origins are same-site from the initiator origin.

// `origin1` has Accept-CH cache entries while `origin2` does not.

const hostname1 = '{{hosts[][www]}}';

const hostname2 = '{{hosts[][www1]}}';

const origin1 = 'https://{{hosts[][www]}}:{{ports[https][0]}}';

const origin2 = 'https://{{hosts[][www1]}}:{{ports[https][0]}}';

// First, verify the initial state to make sure that the browser does not have

// client hints preferences cached from a previous run of the test.

verify_initial_state(origin1 + echo, 'origin1');

verify_initial_state(origin2 + echo, 'origin2');

// Then, attempt to set Accept-CH cache only on `origin1`, and verify that CH

// are actually sent to `initialOrigin`.

attempt_set('navigation', origin1 + accept, 'origin1', '');

// Prefetch to `origin1` is redirected to `origin2`.

promise_test(async t => {

  const agent = await spawnWindow(t);

  const finalUrl = agent.getExecutorURL({ page: 2, hostname: hostname2 });

  const initialUrl = new URL('/common/redirect.py', origin1);

  initialUrl.searchParams.set('location', finalUrl);

  await agent.forceSinglePrefetch(initialUrl);

  await agent.navigate(initialUrl,

                       {expectedDestinationUrl: finalUrl});

  const headers = await agent.getRequestHeaders();

  assert_prefetched(headers);

  assert_equals(headers['sec-ch-device-memory'], undefined,

      'sec-ch-device-memory');

}, 'Client Hints headers should be updated on redirects (drop)');

// Prefetch to `origin2` is redirected to `origin1`.

promise_test(async t => {

  const agent = await spawnWindow(t);

  const finalUrl = agent.getExecutorURL({ page: 2, hostname: hostname1 });

  const initialUrl = new URL('/common/redirect.py', origin2);

  initialUrl.searchParams.set('location', finalUrl);

  await agent.forceSinglePrefetch(initialUrl);

  await agent.navigate(initialUrl,

                       {expectedDestinationUrl: finalUrl});

  const headers = await agent.getRequestHeaders();

  assert_prefetched(headers);

  assert_not_equals(headers['sec-ch-device-memory'], undefined,

      'sec-ch-device-memory');

}, 'Client Hints headers should be updated on redirects (add)');

</script>