chromium/third_party/blink/web_tests/http/tests/notifications/serviceworkerregistration-get-from-service-worker.html

<!doctype html>
<html>
  <head>
    <title>Notifications: ServiceWorkerRegistration.getNotifications() when created by the Service Worker.</title>
    <script src="../resources/testharness.js"></script>
    <script src="../resources/testharnessreport.js"></script>
    <script src="../serviceworker/resources/test-helpers.js"></script>
    <script src="resources/test-helpers.js"></script>
  </head>
  <body>
    <script>
      // Tests that the getNotifications() function when used in a document returns
      // an array of the notifications which were previously displayed by the
      // Service Worker.
      async_test(function(test) {
          var scope = 'resources/scope/' + location.pathname;
          var script = 'instrumentation-service-worker.js';
          var port;
          var registration;

          testRunner.setPermission('notifications', 'granted', location.origin, location.origin);

          getActiveServiceWorkerWithMessagePort(test, script, scope).then(function(info) {
              port = info.port;
              registration = info.registration;

              // (1) Tell the Service Worker to display a new Notification and wait for it
              // to have been displayed to the user.
              return sendCommand(port, {
                  command: 'show',

                  title: scope,
                  options: { body: 'Hello, world!' }
              });
          }).then(function(data) {
              assert_true(data.success);
              // (2) Get a list of all notifications in the document.
              return registration.getNotifications();
          }).then(function(notifications) {
              // (3) Verify that there's only one notification: the one we just showed.
              assert_equals(notifications.length, 1);

              assert_equals(notifications[0].title, scope);
              assert_equals(notifications[0].body, 'Hello, world!');

              test.done();

          }).catch(unreached_rejection(test));

      }, 'ServiceWorkerRegistration.getNotifications() when created by a Service Worker.');
    </script>
  </body>
</html>