public async Task EmitsFalseWhenThereAreNoCalendarsEnabledThenTrueWhenThereAreCalendarsEnabled()
{
var calendars = TestScheduler.CreateHotObservable(
new Recorded <Notification <List <string> > >(100, Notification.CreateOnNext(new List <string>())),
new Recorded <Notification <List <string> > >(200, Notification.CreateOnNext(new List <string> {
"nice event"
})));
UserPreferences.EnabledCalendars.Returns(calendars);
PermissionsChecker.CalendarPermissionGranted.Returns(Observable.Return(true));
var observer = TestScheduler.CreateObserver <bool>();
var viewModel = CreateViewModel();
viewModel.HasCalendarsLinked.Subscribe(observer);
await viewModel.Initialize();
TestScheduler.Start();
viewModel.ViewAppeared();
TestScheduler.Start();
UserPreferences.EnabledCalendars.Returns(Observable.Return(new List <string> {
"nice event"
}));
TestScheduler.Start();
observer.Messages.AssertEqual(
ReactiveTest.OnNext(100, false),
ReactiveTest.OnNext(200, true)
);
}