<!DOCTYPE html>
<html>
<head>
<script src="/js-test-resources/js-test.js"></script>
<body>
<script>
    var link = document.createElement("link");
    link.as = "image";
    link.rel = "preload";
    // Cache-busting is needed for slow resources.
    link.href = "../resources/slow-image.py?rand=" + Math.random();
    var downloadedImage = false;
    document.body.appendChild(link);
    link.href = "";
    window.addEventListener("load", function() {
        var entries = performance.getEntriesByType("resource");
        for (var i = 0; i < entries.length; ++i) {
            if (entries[i].name.indexOf("slow-image.py") != -1)
                downloadedImage = true;
        }
        shouldBeFalse("downloadedImage");
    });
</script>
</body>