referrer-policy.https.html

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This WPT test may be referenced by the following Test IDs:
- /speculation-rules/prefetch/referrer-policy.https.html?1-1 - WPT Dashboard Interop Dashboard
- /speculation-rules/prefetch/referrer-policy.https.html?2-2 - WPT Dashboard Interop Dashboard
- /speculation-rules/prefetch/referrer-policy.https.html?3-3 - WPT Dashboard Interop Dashboard
- /speculation-rules/prefetch/referrer-policy.https.html?4-last - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Prefetch is done with the referring page's referrer policy</title>

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

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

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

<script src="/common/subset-tests.js"></script>

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

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

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

<!--Split test cases due to the use of timeouts in speculation rules test utilities.-->

<meta name="variant" content="?1-1">

<meta name="variant" content="?2-2">

<meta name="variant" content="?3-3">

<meta name="variant" content="?4-last">

<script>

"use strict";

setup(() => assertSpeculationRulesIsSupported());

subsetTest(promise_test, async t => {

  const agent = await spawnWindow(t);

  await agent.setReferrerPolicy("strict-origin-when-cross-origin");

  const expectedReferrer = agent.getExecutorURL().href;

  const nextURL = agent.getExecutorURL({ page: 2 });

  await agent.forceSinglePrefetch(nextURL);

  await agent.navigate(nextURL);

  const headers = await agent.getRequestHeaders();

  assert_prefetched(headers, "must be prefetched");

  assert_equals(headers.referer, expectedReferrer, "must send the full URL as the referrer");

}, 'with "strict-origin-when-cross-origin" referrer policy');

subsetTest(promise_test, async t => {

  const agent = await spawnWindow(t);

  await agent.setReferrerPolicy("strict-origin");

  const expectedReferrer = agent.getExecutorURL().origin + "/";

  const nextURL = agent.getExecutorURL({ page: 2 });

  await agent.forceSinglePrefetch(nextURL);

  await agent.navigate(nextURL);

  const headers = await agent.getRequestHeaders();

  assert_prefetched(headers, "must be prefetched");

  assert_equals(headers.referer, expectedReferrer, "must send the origin as the referrer");

}, 'with "strict-origin" referrer policy');

subsetTest(promise_test, async t => {

  const agent = await spawnWindow(t);

  await agent.setReferrerPolicy("no-referrer");

  const nextURL = agent.getExecutorURL({ page: 2 });

  await agent.forceSinglePrefetch(nextURL);

  await agent.navigate(nextURL);

  const headers = await agent.getRequestHeaders();

  assert_prefetched(headers, "must be prefetched");

  assert_equals(headers.referer, '', "must send no referrer");

}, 'with "no-referrer" referrer policy');

subsetTest(promise_test, async t => {

  const agent = await spawnWindow(t);

  await agent.setReferrerPolicy("no-referrer");

  const next_url = agent.getExecutorURL({ page: 2 });

  await agent.execute_script((url) => {

    const a = addLink(url);

    a.referrerPolicy = 'strict-origin';

    insertDocumentRule();

  }, [next_url]);

  await new Promise(resolve => t.step_timeout(resolve, 2000));

  await agent.navigate(next_url);

  const headers = await agent.getRequestHeaders();

  const expected_referrer = next_url.origin + '/';

  assert_prefetched(headers, 'must be prefetched');

  assert_equals(headers.referer, expected_referrer);

}, 'with "strict-origin" link referrer policy overriding "no-referrer" of referring page');

</script>