<!-- webkit-test-runner [ UsesBackForwardCache=true ] -->
<!DOCTYPE html>
<html>
<body>
<script src="/resources/js-test-pre.js"></script>
<script>
description('Tests that a page with a SharedWorker goes into the page cache.');
window.jsTestIsAsync = true;

var restoredFromPageCache = false;
var sw1, sw2;
var state;

window.addEventListener("pageshow", async function(event) {
    debug("pageshow - " + (event.persisted ? "" : "not ") + "from cache");

    if (event.persisted) {
        testPassed("Page did enter and was restored from the page cache");
        restoredFromPageCache = true;

        sw1.port.postMessage('counter');
        const counter = await new Promise(resolve => sw1.port.onmessage = (event) => resolve(event.data));
        if (counter < 100)
            testPassed("counter is below 100");
        else
            testFailed("counter is above 100");

        sw2.port.postMessage('getState');
        state = await new Promise(resolve => sw2.port.onmessage = (event) => resolve(event.data));
        shouldBeEqualToString("state", "hungry");

        setTimeout(finishJSTest, 0);
    }
}, false);

window.addEventListener("pagehide", function(event) {
    debug("pagehide - " + (event.persisted ? "" : "not ") + "entering cache");
    if (!event.persisted) {
        testFailed("Page did not enter the page cache.");
        finishJSTest();
    }
}, false);

window.addEventListener('load', function() {
    sw1 = new SharedWorker('resources/shared-worker-script.js?1');
    sw2 = new SharedWorker('resources/shared-worker-script.js?2');
    setTimeout(function() {
      // Force a back navigation back to this page.
      window.location.href = "resources/page-cache-helper-for-sharedworker.html";
    }, 1000);
}, false);

</script>
<script src="/resources/js-test-post.js"></script>
</body>
</html>