preload-fetch.html | Explore in Territory

<!DOCTYPE html>
<meta charset=utf-8>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="early-hints-helpers.sub.js"></script>
<body>
<script>
promise_test(async (t) => {
    const preloads = getPreloadsFromSearchParams();
    assert_equals(preloads.length, 1);
    const preload = preloads[0];

    await fetch(preload.url).then((response) => response.json());
    const name = new URL(preload.url, window.location);
    assert_true(isPreloadedByEarlyHints(name));
}, "Ensure early hints preload works for fetch()");
</script>
</body>

chromium/third_party/blink/web_tests/external/wpt/loading/early-hints/resources/preload-fetch.html