ServiceWorker: Expose registration within ServiceWorkerGlobalScope [3/3]

LayoutTests/http/tests/serviceworker/ServiceWorkerGlobalScope/resources/registration-attribute-worker.js

+importScripts('../../resources/test-helpers.js');
+importScripts('../../resources/worker-testharness.js');
+
+assert_equals(
+  self.registration.scope,
+  normalizeURL('scope/registration-attribute'),
+  'On worker script evaluation, registration attribute should be set');
+assert_equals(
+  self.registration.installing,
+  null,
+  'On worker script evaluation, installing worker should be null');
+assert_equals(
+  self.registration.waiting,
+  null,
+  'On worker script evaluation, waiting worker should be null');
+assert_equals(
+  self.registration.active,
+  null,
+  'On worker script evaluation, active worker should be null');
+
+self.addEventListener('install', function(e) {
+    assert_equals(
+      self.registration.scope,
+      normalizeURL('scope/registration-attribute'),
+      'On install event, registration attribute should be set');
+    // FIXME: Verify that registration.installing is set.
+    // FIXME: Verify that registration.{waiting, active} are null.
+  });
+
+self.addEventListener('activate', function(e) {
+    assert_equals(
+      self.registration.scope,
+      normalizeURL('scope/registration-attribute'),
+      'On activate event, registration attribute should be set');
+    // FIXME: Verify that registration.{installing, waiting} are null.
+    // FIXME: Verify that registration.active is set.
+  });
+
+self.addEventListener('fetch', function(e) {
+    assert_equals(
+      self.registration.scope,
+      normalizeURL('scope/registration-attribute'),
+      'On fetch event, registration attribute should be set');
+    // FIXME: Verify that registration.{installing, waiting} are null.
+    // FIXME: Verify that registration.active is set.
+    e.respondWith(new Response('Hello, world!'));
+  });