preload-fetch.html

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<!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>