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<!DOCTYPE html>
<!--
This file is marked as "tentative" until:
* The feature flag ClearSiteDataPrefetchPrerenderCache is enabled and
https://github.com/WICG/nav-speculation/issues/357 is added to the specification.
-->
<title>clear-site-data-cache cancels prerenders</title>
<meta name="timeout" content="long">
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/speculation-rules/resources/utils.js"></script>
<script src="/speculation-rules/prerender/resources/utils.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js"></script>
<script>
setup(() => assertSpeculationRulesIsSupported());
// Test that Clear-Site-Data header value "prerenderCache" clears prerender cache
promise_test(async t => {
const rcHelper = new RemoteContextHelper();
const referrerRC = await rcHelper.addWindow({
origin: 'HTTPS_ORIGIN'
}, {
features: 'noopener'
});
const prerenderedRC = await addPrerenderRC(referrerRC, {
origin: 'HTTPS_ORIGIN'
});
const sameOrigin = get_host_info().HTTPS_ORIGIN;
// Open new window with url to clear cache data through Clear-Site-Data header.
// Ensure that the cache is cleared before the navigation.
const gotMessage = new Promise(resolve => {
window.addEventListener('message', e => {
resolve(e.data);
}, {
once: true
});
});
window.open(sameOrigin + "/../../clear-site-data/support/clear-site-data-prerenderCache.py");
await gotMessage;
// Because Clear-Site-Data response header is sent, the existing prerender
// is expected to be canceled.
// And the navigation is expected to create another page instead of activation.
referrerRC.navigateTo(prerenderedRC.url);
assert_equals(await getActivationStart(prerenderedRC), 0);
}, "clear-site-data prerenderCache headers should prevent it from being activated");
// Test that Clear-Site-Data header value "cache" clears prerender cache
promise_test(async t => {
const rcHelper = new RemoteContextHelper();
const referrerRC = await rcHelper.addWindow({
origin: 'HTTPS_ORIGIN'
}, {
features: 'noopener'
});
const prerenderedRC = await addPrerenderRC(referrerRC, {
origin: 'HTTPS_ORIGIN'
});
const sameOrigin = get_host_info().HTTPS_ORIGIN;
// Open new window with url to clear cache data through Clear-Site-Data header.
// Ensure that the cache is cleared before the navigation.
const gotMessage = new Promise(resolve => {
window.addEventListener('message', e => {
resolve(e.data);
}, {
once: true
});
});
let cache_helper = "cache_helper=" + self.crypto.randomUUID() + "&";
window.open(sameOrigin + "/../../clear-site-data/support/clear-site-data-cache.py?" + cache_helper + "response=single_html&cache&clear_first=all");
await gotMessage;
// Because Clear-Site-Data response header is sent, the existing prerender
// is expected to be canceled.
// And the navigation is expected to create another page instead of activation.
referrerRC.navigateTo(prerenderedRC.url);
assert_equals(await getActivationStart(prerenderedRC), 0);
}, "clear-site-data cache headers should prevent it from being activated");
</script>
</body>
</html>
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