Commit 2297df23 authored by Noam Rosenthal's avatar Noam Rosenthal Committed by moz-wptsync-bot
Browse files

Bug 1782455 [wpt PR 35288] - Add test for <link rel=preconnect>, a=testonly 

Automatic update from web-platform-tests
Add test for <link rel=preconnect> (#35288)

* Add test for preconnect

--

wpt-commits: 69d20d0e3431b88bc778b6ec321a561292d4c054
wpt-pr: 35288
parent 8c1091cf

testing/web-platform/tests/common/proxy-all.sub.pac

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Original line number Diff line number Diff line 
function FindProxyForURL(url, host) {

    return "PROXY {{host}}:{{ports[http][0]}}"

}

testing/web-platform/tests/preload/preconnect.html

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<!DOCTYPE html>

<html>

<title>Makes sure that preloaded resources reduce connection time to zero</title>

<meta name="timeout" content="long">

<meta name="pac" content="/common/proxy-all.sub.pac">

<script src="/common/utils.js"></script>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>



<body>

<script>

    const FAKE_PORT = 30303;

    promise_test(async t => {

        const fake_remote_origin = `http://${token()}.wpt:${FAKE_PORT}`;

        const link = document.createElement('link');

        link.rel = "preconnect";

        link.href = fake_remote_origin;

        document.head.appendChild(link);

        await new Promise(r => t.step_timeout(r, 1000));

        const url = `${fake_remote_origin}/images/smiley.png`;

        const entryPromise = new Promise(resolve => {

            new PerformanceObserver(list => {

                const entries = list.getEntriesByName(url);

                if (entries.length)

                    resolve(entries[0]);

            }).observe({type: "resource"});

        });



        const img = document.createElement('img');

        img.src = url;

        document.body.appendChild(img);

        const entry = await entryPromise;

        assert_equals(entry.domainLookupStart, entry.domainLookupEnd);

        assert_equals(entry.domainLookupStart, entry.connectStart);

        assert_equals(entry.domainLookupStart, entry.connectEnd);

    }, "Test that preconnect reduces connection time to zero");

</script>

</body>

</html>