<!DOCTYPE html>
<title>Makes sure that Link headers preload resources</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/preload/resources/preload_helper.js"></script>
<body>
<script>
    setup({single_test: true});

    var iterations = 0;

    function check_finished() {
        if (numberOfResourceTimingEntries("resources/square.png?link-header-preload") == 1 &&
            numberOfResourceTimingEntries("resources/dummy.js?link-header-preload") == 1 &&
            numberOfResourceTimingEntries("resources/dummy.css?link-header-preload") == 1) {
            done();
        }
        iterations++;
        if (iterations == 10) {
            // At least one is expected to fail, but this should give details to the exact failure(s).
            verifyNumberOfResourceTimingEntries("resources/square.png?link-header-preload", 1);
            verifyNumberOfResourceTimingEntries("resources/dummy.js?link-header-preload", 1);
            verifyNumberOfResourceTimingEntries("resources/dummy.css?link-header-preload", 1);
            done();
        } else {
            step_timeout(check_finished, 500);
        }
    }

    window.addEventListener("load", function() {
        verifyPreloadAndRTSupport();
        step_timeout(check_finished, 500);
    });
</script>
</body>