<!DOCTYPE html>
<title>Service Worker: Skip waiting installed worker</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/test-helpers.sub.js"></script>
<script>
'use strict';

promise_test(function(t) {
    var scope = 'resources/blank.html?skip-waiting-installed';
    var url1 = 'resources/empty.js';
    var url2 = 'resources/skip-waiting-installed-worker.js';
    var frame, frame_sw, service_worker, registration, onmessage, oncontrollerchanged;
    var saw_message = new Promise(function(resolve) {
        onmessage = function(e) {
            resolve(e.data);
          };
        })
      .then(function(message) {
          assert_equals(
            message, 'PASS',
            'skipWaiting promise should be resolved with undefined');
        });
    var saw_controllerchanged = new Promise(function(resolve) {
        oncontrollerchanged = function() {
            assert_equals(
                frame_sw.controller.scriptURL, normalizeURL(url2),
                'Controller scriptURL should change to the second one');
            assert_equals(registration.active.scriptURL, normalizeURL(url2),
                          'Worker which calls skipWaiting should be active by controllerchange');
            resolve();
        };
      });
    return service_worker_unregister_and_register(t, url1, scope)
      .then(function(r) {
          t.add_cleanup(function() {
              return service_worker_unregister(t, scope);
            });

          return wait_for_state(t, r.installing, 'activated');
        })
      .then(function() {
          return with_iframe(scope);
        })
      .then(function(f) {
          frame = f;
          frame_sw = f.contentWindow.navigator.serviceWorker;
          assert_equals(
              frame_sw.controller.scriptURL, normalizeURL(url1),
              'Document controller scriptURL should equal to the first one');
          frame_sw.oncontrollerchange = t.step_func(oncontrollerchanged);
          return navigator.serviceWorker.register(url2, {scope: scope});
        })
      .then(function(r) {
          registration = r;
          service_worker = r.installing;
          return wait_for_state(t, service_worker, 'installed');
        })
      .then(function() {
          var channel = new MessageChannel();
          channel.port1.onmessage = t.step_func(onmessage);
          service_worker.postMessage({port: channel.port2}, [channel.port2]);
          return Promise.all([saw_message, saw_controllerchanged]);
        })
      .then(function() {
          frame.remove();
        });
  }, 'Test skipWaiting when a installed worker is waiting');

</script>