avoid_delaying_onload_link_preload.html

<!DOCTYPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script>
    var t = async_test('Makes sure link preload preloaded resources are not delaying onload');
</script>
<link rel=preload href="../resources/slow-script.pl?delay=200" as=script>
<script>
    window.addEventListener("load", t.step_func(function() {
        assert_equals(performance.getEntriesByType("resource").length, 2);
        t.done();
    }));
</script>

chromium/third_party/blink/web_tests/http/tests/preload/avoid_delaying_onload_link_preload.html