prefetch-single.https.html | Explore in Territory

<!DOCTYPE html>
<title>Prefetched response including No-Vary-Search headers is used during navigation</title>
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<script>
  setup(() => assertSpeculationRulesIsSupported());

  /*
    remoteAgent: the RemoteContext instance used to communicate between the
      test and the window where prefetch/navigation is happening
    noVarySearchHeaderValue: the value of No-Vary-Search header to be populated
      for the prefetched response
    prefetchQuery: query params to be added to prefetchExecutor url and prefetched
    navigateQuery: query params to be added to prefetchExecutor url and navigated to
  */
  async function prefetchAndNavigate(remoteAgent, noVarySearchHeaderValue, prefetchQuery, navigateQuery){
    const nextUrl = remoteAgent.getExecutorURL();
    const navigateToUrl = new URL(nextUrl);
    // Add query params to the url to be prefetched.
    const additionalPrefetchedUrlSearchParams = new URLSearchParams(prefetchQuery);
    addNoVarySearchHeaderUsingPipe(additionalPrefetchedUrlSearchParams, noVarySearchHeaderValue);
    additionalPrefetchedUrlSearchParams.forEach((value, key) => {
      nextUrl.searchParams.append(key, value);
    });

    await remoteAgent.forceSinglePrefetch(nextUrl);

    // Add new query params to navigateToUrl to match No-Vary-Search test case.
    const additionalNavigateToUrlSearchParams = new URLSearchParams(navigateQuery);
    addNoVarySearchHeaderUsingPipe(additionalNavigateToUrlSearchParams, noVarySearchHeaderValue);
    additionalNavigateToUrlSearchParams.forEach((value, key) => {
      navigateToUrl.searchParams.append(key, value);
    });
    await remoteAgent.navigate(navigateToUrl);
  }

  function prefetch_no_vary_search_test(description, noVarySearch, prefetchQuery, navigateQuery, shouldUse){
    promise_test(async t => {
      const agent = await spawnWindow(t, {});
      await prefetchAndNavigate(agent,
        noVarySearch,
        prefetchQuery,
        navigateQuery);

      if(shouldUse){
        assert_prefetched(await agent.getRequestHeaders(),
          "Navigation didn't use the prefetched response!");
      }
      else{
        assert_not_prefetched(await agent.getRequestHeaders(),
          "Navigation used the prefetched response!");
      }
     }, description);
  }

  test_inputs.forEach(({description, noVarySearch, prefetchQuery, navigateQuery, shouldUse}) => {
    subsetTest(prefetch_no_vary_search_test,
      description, noVarySearch, prefetchQuery, navigateQuery,
      shouldUse);
  });

</script>
chromium/third_party/blink/web_tests/external/wpt/speculation-rules/prefetch/no-vary-search/prefetch-single.https.html
