mozilla-central/testing/web-platform/tests/speculation-rules/prefetch/no-vary-search/prefetch-single.https.html

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<!DOCTYPE html>
<title>Prefetched response including No-Vary-Search headers is used during navigation</title>
<meta charset="utf-8">
<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.js"></script>
<script src="../resources/utils.sub.js"></script>
<script src="/common/subset-tests.js"></script>
<script src="test-utils.js"></script>
<script src="test-inputs.js"></script>
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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>