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<!-- TODO(crbug/1358591): Rename this file from "tentative" once
`WICG/nav-speculation#180` is merged. -->
<!DOCTYPE html>
<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.sub.js"></script>
<meta name="variant" content="?prefetch=true&bypass_cache=true">
<meta name="variant" content="?prefetch=false&bypass_cache=true">
<meta name="variant" content="?prefetch=true&bypass_cache=false">
<meta name="variant" content="?prefetch=false&bypass_cache=false">
<script>
const prefetchEnabled = (Object.fromEntries(
new URLSearchParams(location.search)).prefetch === "true");
const bypassCache = (Object.fromEntries(
new URLSearchParams(location.search)).bypass_cache === "true");
promise_test(async t => {
assert_implements(HTMLScriptElement.supports('speculationrules'),
"Speculation Rules not supported");
const agent = await spawnWindow(t);
// Some meaningless query param to avoid cached response.
const prefetchUrl =
bypassCache ? agent.getExecutorURL({ a: "b" }) : agent.getExecutorURL();
if (prefetchEnabled)
await agent.forceSinglePrefetch(prefetchUrl);
await agent.navigate(prefetchUrl);
if (prefetchEnabled)
assert_prefetched(await agent.getRequestHeaders(),
`Prefetch ${prefetchUrl.href} should work.`);
else
assert_not_prefetched(await agent.getRequestHeaders(),
`${prefetchUrl.href} should not be prefetched.`);
await agent.execute_script(
() => window.entries = performance.getEntriesByType('navigation'));
// Expects one entry, whose `deliveryType` is "navigational-prefetch" for
// the prefetched request, and "" for the non-prefetched.
//
// TODO(crbug/1317756): Currently the initial prefetch request bypasses the
// HTTP cache, making `deliveryType` always an empty string for non-prefetch
// request. Expand test coverage when `net::LOAD_DISABLE_CACHE` is removed.
assert_equals(await agent.execute_script(() => window.entries.length), 1,
'Wrong number of entries');
const deliveryType =
await agent.execute_script(() => window.entries[0].deliveryType);
const expectedDeliveryType = prefetchEnabled ? 'navigational-prefetch' : '';
assert_equals(deliveryType, expectedDeliveryType);
}, `PerformanceNavigationTiming.deliveryType test, same origin prefetch.`);
</script>
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