loading/early-hints/resources/csp-basic.html

<!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 SEARCH_PARAMS = new URLSearchParams(window.location.search);
const EARLY_HINTS_POLICY = SEARCH_PARAMS.get("early-hints-policy");
const FINAL_POLICY = SEARCH_PARAMS.get("final-policy");

function isResourceAllowed() {
    return FINAL_POLICY === "absent" || FINAL_POLICY === "allowed";
}

function shouldEarlyHintsPreloadResource() {
    return EARLY_HINTS_POLICY === "absent" || EARLY_HINTS_POLICY == "allowed";
}

promise_test(async (t) => {
    const resource_url = SEARCH_PARAMS.get("resource-url");
    if (isResourceAllowed()) {
        await fetchScript(resource_url);
        const early_hints_preloaded = isPreloadedByEarlyHints(resource_url);
        const should_early_hints_preload = shouldEarlyHintsPreloadResource();
        const description = "Early Hints " +
            (early_hints_preloaded ? "preloaded" : "didn't preload") +
            " the resource, should " +
            (should_early_hints_preload ? "" : "not ") + "preload.";
        assert_equals(early_hints_preloaded, should_early_hints_preload,
            description);
    } else {
        await promise_rejects_js(t, Error, fetchScript(resource_url));
    }
}, `Early Hints CSP: Early Hints policy = ${EARLY_HINTS_POLICY}, final response policy = ${FINAL_POLICY}.`);
</script>
</body>