SharedWorker-extendedLifetime.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /workers/tentative/SharedWorker-extendedLifetime.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>SharedWorker extendedLifetime</title>

<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>

let request_id = 0;

const connectToSharedWorker = async () => {

  await window.pageShowPromise;

  window.worker = new SharedWorker(

    '/workers/tentative/resources/shared-worker-memory.js',

    {extendedLifetime: true});

  worker.port.start();

};

const postAndWait = async (data) => {

  return new Promise(resolve => {

    const listener = event => {

      if (event.data.reqid !== data.reqid) {

        return;

      worker.port.removeEventListener('message', listener);

      resolve(event.data);

};

    worker.port.addEventListener('message', listener);

    worker.port.postMessage(data);

});

};

promise_test(async t => {

  // SharedWorker is started with the extendedLifetime option.

  // random message is stored there, which can be read later.

  const uuid = token();

  const ctx = new RemoteContext(token());

  const popup = window.open(remoteExecutorUrl(ctx.context_id));

  await ctx.execute_script(connectToSharedWorker);

  const popup_response = await ctx.execute_script(postAndWait, [{

    reqid: request_id++,

    op: 'store',

    data: uuid,

  }]);

  assert_equals(popup_response.status, 'OK');

  popup.close();

  // Wait for a second.

  await new Promise(resolve => setTimeout(resolve, 1));

  const ctx2 = new RemoteContext(token());

  const popup2 = window.open(remoteExecutorUrl(ctx2.context_id));

  await ctx2.execute_script(connectToSharedWorker);

  const popup2_response = await ctx2.execute_script(postAndWait, [{

    reqid: request_id++,

    op: 'load',

  }]);

  assert_equals(popup2_response.status, 'OK');

  assert_equals(popup2_response.data, uuid);

}, "SharedWorker lifetime should be extended with extendedLifetime");

</script>