coep-mismatch.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>

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");

promise_test(async (t) => {

    const resource_url = SEARCH_PARAMS.get("resource-url");

    if (FINAL_POLICY === "require-corp") {

        assert_equals(EARLY_HINTS_POLICY, "unsafe-none");

        await promise_rejects_js(t, Error, fetchScript(resource_url));

    } else {

        assert_equals(EARLY_HINTS_POLICY, "require-corp");

        await fetchScript(resource_url);

        assert_false(isPreloadedByEarlyHints(resource_url));

}, `Early Hints COEP mismatch: Early Hints policy = ${EARLY_HINTS_POLICY}, final response policy = ${FINAL_POLICY}.`);

</script>

</body>