chromium/third_party/blink/web_tests/http/tests/notifications/serviceworkerregistration-document-data-invalid.html

<!doctype html>
<html>
  <head>
    <title>Notifications: ServiceWorkerRegistration.showNotification() fails on too much data.</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 showNotification() function rejects the promise when the
      // developer-provided data exceeds a megabyte. This is an implementation-
      // defined limit to prevent abuse.

      async_test(function(test) {
          var scope = 'resources/scope/' + location.pathname,
              script = 'instrumentation-service-worker.js';

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

          var workerInfo = null;
          getActiveServiceWorkerWithMessagePort(test, script, scope).then(function(info) {
              workerInfo = info;

              // (1) Display a Web Notification from the document.
              assert_inherits(workerInfo.registration, 'showNotification', 'showNotification() must be exposed.');
              return workerInfo.registration.showNotification(scope, {
                  body: 'Hello, world!',
                  icon: '/icon.png',
                  data: new Array(1024 * 1024 * 2).join('.'), // 2 million dots
              });
          }).then(unreached_fulfillment(test))
            .catch(function() {
                test.done();
            });

      }, 'ServiceWorkerRegistration.showNotification() fails on too much data.');
    </script>
  </body>
</html>