chromium/third_party/blink/web_tests/external/wpt/speculation-rules/prerender/no-vary-search.https.html

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<body></body>
<script>
setup(() => assertSpeculationRulesIsSupported());

function prerender_no_vary_search_test(description, noVarySearch, prefetchQuery, navigateQuery, shouldUse) {
  promise_test(async t => {
    const prefetchQueryParams = new URLSearchParams(prefetchQuery);
    const navigateQueryParams = new URLSearchParams(navigateQuery);

    addNoVarySearchHeaderUsingPipe(prefetchQueryParams, noVarySearch);
    addNoVarySearchHeaderUsingPipe(navigateQueryParams, noVarySearch);

    const params = {
      'prerendering': prefetchQueryParams,
      'activating': navigateQueryParams
    };

    const {exec, tryToActivate, getNetworkRequestCount, prerenderingURL, activatingURL} =
        await create_prerendered_page(t, params);

    if (shouldUse) {
      // The request should be sent only one time for prerendering.

      // Test that the URL changes, and that popstate isn't called as part of
      // activation changing the URL.
      await exec(() => {
        window.popstateFired = false;
        window.addEventListener("popstate", () => {
          window.popstateFired = true;
        });
      });
      assert_equals(await exec(() => location.href), prerenderingURL, 'location.href before activation');

      assert_equals(await tryToActivate(), 'activated');
      assert_equals(await getNetworkRequestCount(), '1');

      assert_equals(await exec(() => location.href), activatingURL, 'location.href after activation');
      assert_equals(await exec(() => window.popstateFired), false, 'popstate must not be fired');
    } else {
      // The request should be sent twice for prerendering and real navigation
      // that doesn't activate the prerendered page.
      assert_equals(await tryToActivate(), 'discarded');
      assert_equals(await getNetworkRequestCount(), '2');
    }
  }, description);
}

test_inputs.forEach(({description, noVarySearch, prefetchQuery, navigateQuery, shouldUse}) => {
  subsetTest(prerender_no_vary_search_test, description, noVarySearch, prefetchQuery, navigateQuery, shouldUse);
});
</script>