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<meta charset="utf-8">
<title>Tests for importScripts: import scripts updated flag</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/test-helpers.sub.js"></script>
<body>
<script>
// This test registers a worker that calls importScripts at various stages of
// service worker lifetime. The sub-tests trigger subsequent `importScript`
// invocations via the `message` event.

var register;

function post_and_wait_for_reply(worker, message) {
  return new Promise(resolve => {
      navigator.serviceWorker.onmessage = e => { resolve(e.data); };
      worker.postMessage(message);
    });
}

promise_test(function(t) {
    const scope = 'resources/import-scripts-updated-flag';
    let registration;

    register = service_worker_unregister_and_register(
        t, 'resources/import-scripts-updated-flag-worker.js', scope)
      .then(r => {
          registration = r;
          add_completion_callback(() => { registration.unregister(); });
          return wait_for_state(t, registration.installing, 'activated');
        })
      .then(() => {
          // This test should not be considered complete until after the
          // service worker has been unregistered. Currently, `testharness.js`
          // does not support asynchronous global "tear down" logic, so this
          // must be expressed using a dedicated `promise_test`. Because the
          // other sub-tests in this file are declared synchronously, this test
          // will be the final test executed.
          promise_test(function(t) {
            return registration.unregister();
          });
          // TODO(b/234788479) Implement waiting for update worker state tasks in
          // Install algorithm, otherwise the worker is activated too early
          if (registration.active) {
            serviceWorker = registration.active;
          } else if (registration.waiting) {
            serviceWorker = registration.waiting;
          } else {
            serviceWorker = registration.installing;
          }
          return serviceWorker;
        });

    return register;
  }, 'initialize global state');

promise_test(t => {
    return register
      .then(function(worker) {
          return post_and_wait_for_reply(worker, 'root-and-message');
        })
      .then(result => {
          assert_equals(result.error, null);
          assert_equals(result.value, 'root-and-message');
        });
  }, 'import script previously imported at worker evaluation time');

promise_test(t => {
    return register
      .then(function(worker) {
          return post_and_wait_for_reply(worker, 'install-and-message');
        })
      .then(result => {
          assert_equals(result.error, null);
          assert_equals(result.value, 'install-and-message');
        });
  }, 'import script previously imported at worker install time');

promise_test(t => {
    return register
      .then(function(worker) {
          return post_and_wait_for_reply(worker, 'message');
        })
      .then(result => {
          assert_equals(result.error, 'NetworkError');
          assert_equals(result.value, null);
        });
  }, 'import script not previously imported');
</script>
</body>