<!doctype html>
<meta name="timeout" content="long">
<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="resources/helper.sub.js"></script>
<script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script>
<script>
promise_test(async t => {
const pageA = new RemoteContext(token());
const pageB = new RemoteContext(token());
const urlA = location.origin + executorPath + pageA.context_id;
const urlB = originCrossSite + executorPath + pageB.context_id;
// Register a service worker.
const workerUrl =
'resources/service-worker.js?pipe=header(Service-Worker-Allowed,../)';
const registration =
await service_worker_unregister_and_register(t, workerUrl, './');
t.add_cleanup(_ => registration.unregister());
await wait_for_state(t, registration.installing, 'activated');
window.open(urlA, '_blank', 'noopener');
await pageA.execute_script(waitForPageShow);
assert_true(
await pageA.execute_script(
() => (navigator.serviceWorker.controller !== null)),
'pageA should be controlled before navigation');
await navigateAndThenBack(pageA, pageB, urlB);
await assert_bfcached(pageA);
assert_true(
await pageA.execute_script(
() => (navigator.serviceWorker.controller !== null)),
'navigator.serviceWorker.controller should be non-null ' +
'after restored from BFCache');
const isControlled = await pageA.execute_script(
() => fetch('/is-controlled').then(r => r.text()));
assert_true(
await pageA.execute_script(
() => (navigator.serviceWorker.controller !== null)),
'navigator.serviceWorker.controller should be non-null ' +
'after restored from BFCache and after fetch');
assert_equals(isControlled, 'controlled',
'fetch should be intercepted after restored from BFCache');
}, 'Pages should remain controlled after restored from BFCache');
</script>
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