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<!DOCTYPE html>
<meta charset=utf-8>
<meta name="timeout" content="long">
<title>Web Locks API: bfcache</title>
<link rel=help href="https://w3c.github.io/web-locks/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="/html/browsers/browsing-the-web/back-forward-cache/resources/helper.sub.js"></script>
<script>
const connectToSharedWorker = async () => {
await window.pageShowPromise;
window.worker = new SharedWorker("/web-locks/resources/worker.js");
worker.port.start();
}
function double_docs_test(func, description) {
promise_test(async t => {
const pageA1 = new RemoteContext(token());
const pageA2 = new RemoteContext(token());
const pageB1 = new RemoteContext(token());
const pageB2 = new RemoteContext(token());
const urlA1 = executorPath + pageA1.context_id;
const urlA2 = executorPath + pageA2.context_id;
const urlB1 = originCrossSite + executorPath + pageB1.context_id;
const urlB2 = originCrossSite + executorPath + pageB2.context_id;
window.open(urlA1, "_blank", "noopener");
window.open(urlA2, "_blank", "noopener");
await func(pageA1, pageA2);
await Promise.all([
navigateAndThenBack(pageA1, pageB1, urlB1),
navigateAndThenBack(pageA2, pageB2, urlB2),
]);
await assert_not_bfcached(pageA1);
await assert_not_bfcached(pageA2);
}, description);
}
double_docs_test(async (pageA1, pageA2) => {
await Promise.all([
pageA1.execute_script(connectToSharedWorker),
pageA2.execute_script(connectToSharedWorker),
]);
await pageA1.execute_script(async () => {
const script = document.createElement("script");
script.src = "/web-locks/resources/helpers.js";
document.head.append(script);
await new Promise(resolve => script.onload = resolve);
await postToWorkerAndWait(worker.port, { op: "request", name: uniqueNameByQuery() });
});
}, "A new held lock must prevent bfcache on all connected documents");
double_docs_test(async (pageA1, pageA2) => {
await pageA1.execute_script(connectToSharedWorker);
await pageA1.execute_script(async () => {
const script = document.createElement("script");
script.src = "/web-locks/resources/helpers.js";
document.head.append(script);
await new Promise(resolve => script.onload = resolve);
await postToWorkerAndWait(worker.port, { op: "request", name: uniqueNameByQuery() });
});
await pageA2.execute_script(connectToSharedWorker);
}, "An existing held lock must prevent bfcache on all connected documents");
</script>
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