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>
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<script>
setup(() => assertSpeculationRulesIsSupported());
function addNoVarySearchHeaderUsingPipe(url, value){
// to populate No-Vary-Search response header.
// The "," and ")" characters need to be escaped by using backslash
// E.g. params=("a") becomes params=("a"\), params=("a"),key-order becomes
// params=("a"\)\,key-order etc.
url.searchParams.append("pipe",
`header(No-Vary-Search,${value.replaceAll(/[,)]/g, '\\$&')})`);
}
/*
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(nextUrl, 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(navigateToUrl, noVarySearchHeaderValue);
additionalNavigateToUrlSearchParams.forEach((value, key) => {
navigateToUrl.searchParams.append(key, value);
});
await remoteAgent.navigate(navigateToUrl);
}
function prefetch_no_vary_search_test(description, noVarySearch, prefetchQuery, navigateQuery, shouldUsePrefetch){
promise_test(async t => {
const agent = await spawnWindow(t, {});
await prefetchAndNavigate(agent,
noVarySearch,
prefetchQuery,
navigateQuery);
if(shouldUsePrefetch){
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:
// - description: a description of the test.
// - no-vary-search: No-Vary-Search header value for the response.
// - prefetch-query: added to query part of prefetch-executor when prefetching
// - navigate-query: added to query part of prefetch-executor when navigating
// - shouldUsePrefetch: if the test case expects the prefetched entry to be
// used or not.
[{description:"Use prefetched response as query parameter b has the same value.",
noVarySearch: 'params=("a")',
prefetchQuery: "a=2&b=3",
navigateQuery: "b=3",
shouldUsePrefetch: true},
{description:"Don't use prefetched response as query parameter b has different value.",
noVarySearch: 'params("a")',
prefetchQuery: "a=2&b=3",
navigateQuery: "b=2",
shouldUsePrefetch: false},
{description:"Use prefetched response as the URLs do not vary by a and b.",
noVarySearch: 'params=("a" "b")',
prefetchQuery: "a=2&b=3",
navigateQuery: "b=2",
shouldUsePrefetch: true},
{description:"Use prefetched response as the URLs do not vary on any query parameters.",
noVarySearch: "params",
prefetchQuery: "a=2&b=3",
navigateQuery: "b=4&c=5",
shouldUsePrefetch: true},
{description:"Use prefetched response as the URLs do not vary on any query parameters.",
noVarySearch: "params",
prefetchQuery: "",
navigateQuery: "b=4&c=5",
shouldUsePrefetch: true},
{description:"Don't use prefetched response as the URLs have different value for c.",
noVarySearch: "key-order",
prefetchQuery: "c=4&b=3&a=2",
navigateQuery: "a=2&c=5&b=3",
shouldUsePrefetch: false},
{description:"Don't use prefetched response as the URLs have the values in different order for a.",
noVarySearch: "key-order",
prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
navigateQuery: "d=6&a=4&b=5&b=3&c=5&a=3",
shouldUsePrefetch: false},
{description:"Use prefetched response as the URLs have the same values for a.",
noVarySearch: "key-order",
prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
shouldUsePrefetch: true},
{description:"Use prefetched response as the URLs have the same values for a.",
noVarySearch: "key-order=?1",
prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
shouldUsePrefetch: true},
{description:"Don't use prefetched response as key-order is set to false and the URLs are not identical.",
noVarySearch: "key-order=?0",
prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
shouldUsePrefetch: false},
{description:"Use prefetched response as query parameter c can be ignored.",
noVarySearch: 'params=("c")',
prefetchQuery: "a=2&b=2&c=5",
navigateQuery: "a=2&c=3&b=2",
shouldUsePrefetch: true},
{description:"Use prefetched response as query parameter a can be ignored.",
noVarySearch: 'params=("a")',
prefetchQuery: "a=2",
navigateQuery: "",
shouldUsePrefetch: true},
{description:"Use prefetched response as query parameter a can be ignored.",
noVarySearch: 'params=("a")',
prefetchQuery: "",
navigateQuery: "a=2",
shouldUsePrefetch: true},
{description:"Use prefetched response as all query parameters except c can be ignored.",
noVarySearch: 'params, except=("c")',
prefetchQuery: "b=5&a=3&d=6&c=3",
navigateQuery: "a=1&b=2&c=3",
shouldUsePrefetch: true},
{description:"Use prefetched response as all query parameters except c can be ignored." +
" Only the last except matters.",
noVarySearch: 'params, except=("b"), except=("c")',
prefetchQuery: "b=5&a=3&d=6&c=3",
navigateQuery: "a=1&b=2&c=3",
shouldUsePrefetch: true},
{description:"Don't use prefetched response as even though all query parameters" +
" except c can be ignored, c has different value.",
noVarySearch: 'params, except=("c")',
prefetchQuery: "b=5&a=3&d=6&c=3",
navigateQuery: "a=1&b=2&c=5",
shouldUsePrefetch: false},
{description:"Use prefetched response as even though all query parameters" +
" except c and d can be ignored, c value matches and d value matches.",
noVarySearch: 'params, except=("c" "d")',
prefetchQuery: "b=5&a=3&d=6&c=5",
navigateQuery: "d=6&a=1&b=2&c=5",
shouldUsePrefetch: true},
{description:"Use prefetched response as even though all query parameters except" +
" c and d can be ignored, c value matches and d value matches." +
" Some query parameters to be ignored appear multiple times in the query.",
noVarySearch: 'params, except=("c" "d")',
prefetchQuery: "b=5&a=3&a=4&d=6&c=5",
navigateQuery: "d=6&a=1&a=2&b=2&b=3&c=5",
shouldUsePrefetch: true},
{description:"Use prefetched response as all query parameters except c can be ignored." +
" Allow extension via parameters.",
noVarySearch: 'params, except=("c";unknown)',
prefetchQuery: "b=5&a=3&d=6&c=3",
navigateQuery: "a=1&b=2&c=3",
shouldUsePrefetch: true},
{description:"Use prefetched response as query parameter c can be ignored." +
" Allow extension via parameters.",
noVarySearch: 'params=("c";unknown)',
prefetchQuery: "a=2&b=2&c=5",
navigateQuery: "a=2&c=3&b=2",
shouldUsePrefetch: true},
{description:"Use prefetched response as the URLs have the values in different order for a." +
" Allow extension via parameters.",
noVarySearch: "key-order;unknown",
prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
shouldUsePrefetch: true},
{description:"Use prefetched response as the URLs do not vary on any query parameters." +
" Allow extension via parameters.",
noVarySearch: "params;unknown",
prefetchQuery: "",
navigateQuery: "b=4&c=5",
shouldUsePrefetch: true},
{description:"Use prefetched response as all query parameters except c can be ignored." +
" Allow extension via parameters.",
noVarySearch: 'params;unknown, except=("c");unknown',
prefetchQuery: "b=5&a=3&d=6&c=3",
navigateQuery: "a=1&b=2&c=3",
shouldUsePrefetch: true},
{description:"Don't use the prefetched URL. Empty No-Vary-Search means default URL variance." +
" The prefetched and the navigated URLs have to be the same.",
noVarySearch: "",
prefetchQuery: "b=5&a=3&d=6&c=3",
navigateQuery: "a=1&b=2&c=3",
shouldUsePrefetch: false},
{description:"Use the prefetched URL. Empty No-Vary-Search means default URL variance." +
" The prefetched and the navigated URLs have to be the same.",
noVarySearch: "",
prefetchQuery: "b=5&a=3&d=6&c=3",
navigateQuery: "b=5&a=3&d=6&c=3",
shouldUsePrefetch: true},
{description:"Use the prefetched URL. Empty No-Vary-Search means default URL variance." +
" The prefetched and the navigated URLs have to be the same.",
noVarySearch: "",
prefetchQuery: "",
navigateQuery: "",
shouldUsePrefetch: true},
{description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
" Don't vary the response on the non-ASCII key.",
noVarySearch: 'params=("%C2%A2")',
prefetchQuery: "¢=3",
navigateQuery: "¢=4",
shouldUsePrefetch: true},
{description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
" Don't vary the response on the non-ASCII key.",
noVarySearch: 'params=("%C2%A2")',
prefetchQuery: "a=2&¢=3",
navigateQuery: "¢=4&a=2",
shouldUsePrefetch: true},
{description:"Don't use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
" Vary the response on the non-ASCII key.",
noVarySearch: 'params, except=("%C2%A2")',
prefetchQuery: "¢=3",
navigateQuery: "¢=4",
shouldUsePrefetch: false},
{description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
" Vary the response on the non-ASCII key.",
noVarySearch: 'params, except=("%C2%A2")',
prefetchQuery: "¢=3&a=4",
navigateQuery: "a=5&¢=3",
shouldUsePrefetch: true},
].forEach(({description, noVarySearch, prefetchQuery, navigateQuery, shouldUsePrefetch}) => {
subsetTest(prefetch_no_vary_search_test,
description, noVarySearch, prefetchQuery, navigateQuery,
shouldUsePrefetch);
});
</script>