Sam Sneddon
5bbaff2951
Automatic update from web-platform-tests Speculation Rules prerender tests should check for support We're seeing timeouts on the STP bots, because spending over an hour timing out on speculation rules tests just eats into the timeout. -- wpt-commits: 9f7999f4b3dd412a338f3231228e64230d6a6531 wpt-pr: 59217
55 lines
1.9 KiB
HTML
55 lines
1.9 KiB
HTML
<!DOCTYPE html>
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<title>Prerender and activate prerender-until-script action page correctly</title>
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<meta name="timeout" content="long">
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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/utils.js"></script>
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<script src="/speculation-rules/prerender/resources/utils.js"></script>
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<script src="../resources/utils.js"></script>
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<body>
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<script>
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setup(() => assertSpeculationRulesIsSupported('prerender'));
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promise_test(async t => {
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/*
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Workflows:
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1. The initiator page (pus-initiator-page-template.html)
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triggers the prerender and simultaneously fetches a signal_url. This
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fetch is designed to hang on the server.
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2. The prerendered page (pus-page-template.html) is allowed to fetch an
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async script (which also hits the signal_url, but with
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isprerendering=True).
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3. When the server receives the request from the prerendered page, it
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puts a token in its stash, which in turn unblocks the initiator's
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hanging fetch.
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4. The .then() block of the initiator's fetch then runs, navigating to
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the prerendered page and causing activation.
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5. The (previously blocked) inline script on the prerendered page then
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executes, verifying that document.prerendering is false and sending the
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result back to the main test page.
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*/
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const uid = token();
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const bc = new PrerenderChannel('test-channel', uid);
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const gotMessage = new Promise(resolve => {
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bc.addEventListener('message', e => {
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resolve(e.data);
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}, {
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once: true
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});
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});
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const url = `resources/pus-handler.py?type=main&uid=${uid}`;
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window.open(url, '_blank', 'noopener');
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const result = await gotMessage;
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assert_equals(result, 'prerendering state when executing JS: false');
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bc.close();
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}, `when prerender-until-script action prerenders a page, the script on that page should always be executed after activation.`);
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</script>
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