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 <body>
   5 <script>
   6 (function () {
   7     var t = async_test('Service Worker state property and "statechange" event');
   8     var currentState = 'test-is-starting';
   9
  10     navigator.serviceWorker.unregister('/state/*').then(register, register);
  11
  12     function register() {
  13         navigator.serviceWorker.register(
  14             'resources/state-worker.js', {scope: '/state/*'}
  15         ).then(t.step_func(onRegister), t.step_func(onRegisterFail));
  16     }
  17
  18     function onRegisterFail(reason) {
  19         assert_unreached('registration should not fail.');
  20         t.done();
  21     }
  22
  23     function onRegister(sw) {
  24         sw.addEventListener('statechange', t.step_func(onStateChange));
  25         assert_in_array(sw.state, ['parsed', 'installing'],
  26                         'the service worker should be in a state up to ' +
  27                         '"installing".');
  28         checkStateTransition(sw.state);
  29     }
  30
  31     function checkStateTransition(newState) {
  32         switch (currentState) {
  33         case 'test-is-starting':
  34             break; // anything goes
  35         case 'parsed':
  36             assert_equals(newState, 'installing');
  37             break;
  38         case 'installing':
  39             assert_in_array(newState, ['installed', 'deactivated']);
  40             break;
  41         case 'installed':
  42             assert_in_array(newState, ['activating', 'deactivated']);
  43             break;
  44         case 'activating':
  45             assert_in_array(newState, ['active', 'deactivated']);
  46             break;
  47         case 'active':
  48             assert_equals(newState, 'deactivated');
  49             break;
  50         case 'deactivated':
  51             assert_unreached('a ServiceWorker should not transition out of ' +
  52                              'the "deactivated" state');
  53             break;
  54         default:
  55             assert_unreached('should not transition into unknown state "' +
  56                              newState + '"');
  57             break;
  58         }
  59         currentState = newState;
  60     }
  61
  62     function onStateChange(event) {
  63         assert_true(event.target instanceof ServiceWorker,
  64                     'the target of the statechange event should be a ' +
  65                     'ServiceWorker.');
  66         assert_equals(event.type, 'statechange',
  67                       'the type of the event should be "statechange".');
  68
  69         checkStateTransition(event.target.state);
  70
  71         if (event.target.state == 'active') {
  72             navigator.serviceWorker.unregister('/state/*').then(done, done);
  73         }
  74     }
  75
  76     function done() {
  77         t.done();
  78     }
  79 }());
  80 </script>