preload-fetchpriority.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>
const preloads = getPreloadsFromSearchParams();
["low", "high", "auto"].forEach((fetchpriority, i) => {
    promise_test(() => {
        return new Promise((resolve, reject) => {
            assert_greater_than(preloads.length, i);
            const preload = preloads[i];
            assert_equals(preload.fetchpriority_attr, fetchpriority);
            const el = document.createElement("script");
            el.src = preload.url;
            el.onload = () => {
                const name = new URL(preload.url, window.location);
                assert_true(isPreloadedByEarlyHints(name));
                resolve();
            };
            el.onerror = reject;
            document.body.appendChild(el);
        });
    }, `fetchpriority='${fetchpriority}' in early hints preload headers does cause not any error`);
});
</script>
</body>

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