public void EnterBusyModeEmptiesNotification()
        {
            var model = new TermListViewModelDraft();

            model.FillNotification();
            Assert.IsNotNull(model.Notification);

            model.InvokeEnterBusyMode();
            Assert.IsNull(model.Notification);
        }
        public void EnterExitBusyModeTogglesIsBusy()
        {
            var model = new TermListViewModelDraft();

            Assert.AreEqual(false, model.IsBusy);

            model.InvokeEnterBusyMode();
            Assert.AreEqual(true, model.IsBusy);

            model.InvokeExitBusyMode();
            Assert.AreEqual(false, model.IsBusy);
        }
        public void EnterExitBusyModeConsiderNesting()
        {
            var model = new TermListViewModelDraft();

            var busyModeChangeCount = 0;

            model.PropertyChanged += (sender, e) => busyModeChangeCount++;

            // Verify that IsBusy changed only once.
            model.InvokeEnterBusyMode();
            model.InvokeEnterBusyMode();
            model.InvokeEnterBusyMode();
            Assert.AreEqual(1, busyModeChangeCount);

            busyModeChangeCount = 0;

            // Verify that IsBusy changed only once.
            model.InvokeExitBusyMode();
            model.InvokeExitBusyMode();
            model.InvokeExitBusyMode();
            Assert.AreEqual(1, busyModeChangeCount);
        }
        public void EnterBusyModeDisablesRecreateStorageCommand()
        {
            var service = this._termsServiceMock;

            service
            .Setup(s => s.LoadTerms(ThreadPoolScheduler.Instance))
            .Returns(() => Observable.Throw <IEnumerable <Term> >(new InvalidTermsStorageException("Invalid")));

            var editModel = Mock.Of <ITermEditViewModel>();
            var listModel = new TermListViewModelDraft(service.Object, editModel);

            DispatcherHelper.ProcessCurrentQueue();

            Assert.IsTrue(listModel.RecreateStorage.CanExecute(null));

            listModel.InvokeEnterBusyMode();

            Assert.IsFalse(listModel.RecreateStorage.CanExecute(null));
        }