src/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           return wait_for_update(t, registration);
  16         }))
  17       .then(t.step_func(function(sw) {
  18           sw.addEventListener('statechange', t.step_func(onStateChange(sw)));
  19           assert_equals(sw.state, 'installing',
  20                         'the service worker should be in "installing" state.');
  21           checkStateTransition(sw.state);
  22         }))
  23       .catch(unreached_rejection(t));
  24
  25     function checkStateTransition(newState) {
  26         switch (currentState) {
  27         case 'test-is-starting':
  28             break; // anything goes
  29         case 'installing':
  30             assert_in_array(newState, ['installed', 'redundant']);
  31             break;
  32         case 'installed':
  33             assert_in_array(newState, ['activating', 'redundant']);
  34             break;
  35         case 'activating':
  36             assert_in_array(newState, ['activated', 'redundant']);
  37             break;
  38         case 'activated':
  39             assert_equals(newState, 'redundant');
  40             break;
  41         case 'redundant':
  42             assert_unreached('a ServiceWorker should not transition out of ' +
  43                              'the "redundant" state');
  44             break;
  45         default:
  46             assert_unreached('should not transition into unknown state "' +
  47                              newState + '"');
  48             break;
  49         }
  50         currentState = newState;
  51     }
  52
  53     function onStateChange(expectedTarget) {
  54         return function(event) {
  55             assert_true(event.target instanceof ServiceWorker,
  56                         'the target of the statechange event should be a ' +
  57                         'ServiceWorker.');
  58             assert_equals(event.target, expectedTarget,
  59                           'the target of the statechange event should be ' +
  60                           'the installing ServiceWorker');
  61             assert_equals(event.type, 'statechange',
  62                           'the type of the event should be "statechange".');
  63
  64             checkStateTransition(event.target.state);
  65
  66             if (event.target.state == 'activated')
  67                 service_worker_unregister_and_done(t, scope);
  68         };
  69     }
  70 }());
  71 </script>