<!DOCTYPE html>
<html>
<head>
<script src="/js-test-resources/js-test.js"></script>
<body>
<script>
    var link = document.createElement("link");
    link.as = "script";
    link.rel = "preload";
    link.href = "../resources/dummy.js";
    document.body.appendChild(link);
</script>
<script src="http://127.0.0.1:8000/resources/slow-script.pl?delay=100"></script>
<script>
    shouldBeTrue("internals.isPreloaded('../resources/dummy.js');");
</script>
</body>