third_party/WebKit/LayoutTests/http/tests/serviceworker/state.html

   1 <!DOCTYPE html>
   2 <script src="../resources/testharness.js"></script>
   3 <script src="../resources/testharnessreport.js"></script>
   4 <script src="resources/test-helpers.js"></script>
   5 <body>
   6 <script>
   7 (function () {
   8     var t = async_test('Service Worker state property and "statechange" event');
   9     var currentState = 'test-is-starting';
  10     var scope = 'resources/state/';
  11
  12     service_worker_unregister_and_register(
  13         t, 'resources/empty-worker.js', scope)
  14       .then(t.step_func(function(registration) {
  15           var sw = registration.installing;
  16           sw.addEventListener('statechange', t.step_func(onStateChange(sw)));
  17           assert_equals(sw.state, 'installing',
  18                         'the service worker should be in "installing" state.');
  19           checkStateTransition(sw.state);
  20         }))
  21       .catch(unreached_rejection(t));
  22
  23     function checkStateTransition(newState) {
  24         switch (currentState) {
  25         case 'test-is-starting':
  26             break; // anything goes
  27         case 'installing':
  28             assert_in_array(newState, ['installed', 'redundant']);
  29             break;
  30         case 'installed':
  31             assert_in_array(newState, ['activating', 'redundant']);
  32             break;
  33         case 'activating':
  34             assert_in_array(newState, ['activated', 'redundant']);
  35             break;
  36         case 'activated':
  37             assert_equals(newState, 'redundant');
  38             break;
  39         case 'redundant':
  40             assert_unreached('a ServiceWorker should not transition out of ' +
  41                              'the "redundant" state');
  42             break;
  43         default:
  44             assert_unreached('should not transition into unknown state "' +
  45                              newState + '"');
  46             break;
  47         }
  48         currentState = newState;
  49     }
  50
  51     function onStateChange(expectedTarget) {
  52         return function(event) {
  53             assert_true(event.target instanceof ServiceWorker,
  54                         'the target of the statechange event should be a ' +
  55                         'ServiceWorker.');
  56             assert_equals(event.target, expectedTarget,
  57                           'the target of the statechange event should be ' +
  58                           'the installing ServiceWorker');
  59             assert_equals(event.type, 'statechange',
  60                           'the type of the event should be "statechange".');
  61
  62             checkStateTransition(event.target.state);
  63
  64             if (event.target.state == 'activated')
  65                 service_worker_unregister_and_done(t, scope);
  66         };
  67     }
  68 }());
  69 </script>