<!-- webkit-test-runner [ UsesBackForwardCache=true ] -->
<!DOCTYPE html>
<html>
<body>
<p>This tests executing a script while being restored from a page cache. WebKit should not hit a release assertion.</p>
<div id="result">
<input id="input">
<button onclick="runTest()">Start test</button>
</div>
<script>

if (window.testRunner) {
    testRunner.clearBackForwardList();
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

window.addEventListener("pageshow", (event) => {
    if (event.persisted) {
        requestAnimationFrame(finish);
        return;
    }
    if (window.testRunner)
        setTimeout(runTest, 0);
});

function runTest()
{
    input.setAttribute('autofocus', '');
    document.getElementById('input').addEventListener('focus', finish);
    location.href = 'resources/page-cache-helper.html';
}

function finish()
{
    document.getElementById('result').textContent = 'PASS';
    setTimeout(() => {
        if (window.testRunner)
            testRunner.notifyDone();
    }, 0);
}

</script>
</body>
</html>