<html>
<head>
<script src="resources/sw-test-pre.js"></script>
</head>
<body>
<script>

function getRandomIdFromWorker(worker)
{
    worker.postMessage("getRandomId");
    return new Promise(function(resolve) {
      navigator.serviceWorker.addEventListener('message', function(e) {
            resolve(e.data);
        });
    });
}

async function test()
{
    try {
        let registration = await navigator.serviceWorker.register("resources/cacheable-script-worker.py", { updateViaCache: "all" });
        let worker1 = registration.installing;
        await waitForState(worker1, "activated");
        let randomId1 = await getRandomIdFromWorker(worker1);

        await registration.update();
        if (registration.installing) {
            log("FAIL: The new script should have come from the cache and thus be identical, in which case it would not have be reinstalled");
            finishSWTest();
        }
 
        let worker2 = registration.active;
        let randomId2 = await getRandomIdFromWorker(worker2);

        if (randomId1 === randomId2)
            log("PASS: The worker script came from the network cache");
        else
            log("FAIL: The worker script did not come from the network cache");
    } catch(e) {
        log("Got exception: " + e);
    }
    finishSWTest();
}
test();
</script>
</body>
</html>