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 = '/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_in_array(sw.state, ['parsed', 'installing'],
  20                           'the service worker should be in a state up to ' +
  21                           '"installing".');
  22           checkStateTransition(sw.state);
  23         }))
  24       .catch(unreached_rejection(t));
  25
  26     function checkStateTransition(newState) {
  27         switch (currentState) {
  28         case 'test-is-starting':
  29             break; // anything goes
  30         case 'parsed':
  31             assert_equals(newState, 'installing');
  32             break;
  33         case 'installing':
  34             assert_in_array(newState, ['installed', 'redundant']);
  35             break;
  36         case 'installed':
  37             assert_in_array(newState, ['activating', 'redundant']);
  38             break;
  39         case 'activating':
  40             assert_in_array(newState, ['activated', 'redundant']);
  41             break;
  42         case 'activated':
  43             assert_equals(newState, 'redundant');
  44             break;
  45         case 'redundant':
  46             assert_unreached('a ServiceWorker should not transition out of ' +
  47                              'the "redundant" state');
  48             break;
  49         default:
  50             assert_unreached('should not transition into unknown state "' +
  51                              newState + '"');
  52             break;
  53         }
  54         currentState = newState;
  55     }
  56
  57     function onStateChange(expectedTarget) {
  58         return function(event) {
  59             assert_true(event.target instanceof ServiceWorker,
  60                         'the target of the statechange event should be a ' +
  61                         'ServiceWorker.');
  62             assert_equals(event.target, expectedTarget,
  63                           'the target of the statechange event should be ' +
  64                           'the installing ServiceWorker');
  65             assert_equals(event.type, 'statechange',
  66                           'the type of the event should be "statechange".');
  67
  68             checkStateTransition(event.target.state);
  69
  70             if (event.target.state == 'activated')
  71                 service_worker_unregister_and_done(t, scope);
  72         };
  73     }
  74 }());
  75 </script>