mirror of
https://github.com/servo/servo
synced 2026-05-13 18:37:30 +02:00
61 lines
2.4 KiB
HTML
61 lines
2.4 KiB
HTML
<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/dispatcher/dispatcher.js"></script>
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<script src="/common/utils.js"></script>
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<script src="resources/utils.sub.js"></script>
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<meta name="variant" content="">
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<meta name="variant" content="?bypass_cache=true">
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<meta name="variant" content="?prefetch=true">
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<meta name="variant" content="?prefetch=true&bypass_cache=true">
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<script>
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const searchParams = new URLSearchParams(location.search);
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const prefetchEnabled = searchParams.has('prefetch');
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const bypassCache = searchParams.has('bypass_cache');
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// Header size: https://w3c.github.io/resource-timing/#dom-performanceresourcetiming-transfersize
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const headerSize = 300;
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promise_test(async t => {
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assert_implements(HTMLScriptElement.supports('speculationrules'),
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"Speculation Rules not supported");
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const agent = await spawnWindow(t);
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// Some meaningless query param to avoid cached response.
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const prefetchUrl =
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bypassCache ? agent.getExecutorURL({ a: "b" }) : agent.getExecutorURL();
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if (prefetchEnabled)
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await agent.forceSinglePrefetch(prefetchUrl);
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await agent.navigate(prefetchUrl);
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if (prefetchEnabled)
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assert_prefetched(await agent.getRequestHeaders(),
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`Prefetch ${prefetchUrl.href} should work.`);
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else
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assert_not_prefetched(await agent.getRequestHeaders(),
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`${prefetchUrl.href} should not be prefetched.`);
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await agent.execute_script(
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() => window.entries = performance.getEntriesByType('navigation'));
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// TODO(crbug/1317756): Currently the initial prefetch request bypasses the
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// HTTP cache. Expand test coverage for cache and cache+revalidation cases.
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//
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// We do not assert the exact size of `resources/executor.sub.html` since it
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// would be a headache to update this test everytime executor.sub.html
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// changes.
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assert_equals(await agent.execute_script(() => window.entries.length), 1,
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'Wrong number of entries');
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const entry =
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await agent.execute_script(() => window.entries[0]);
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const bodySize = entry.encodedBodySize;
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assert_greater_than(bodySize, 0);
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assert_equals(entry.transferSize, headerSize + bodySize);
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assert_equals(entry.decodedBodySize, bodySize);
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}, `PerformanceNavigationTiming.transferSize/encodedBodySize/decodedBodySize test, same origin prefetch.`);
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</script>
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