Ejemplo n.º 1
0
        public void ProviderShouldCallCloseAsyncMethodOnBackNavigation()
        {
            bool isCancelInvoked      = false;
            bool isNavigatedInvoked   = false;
            const NavigationMode mode = NavigationMode.Back;

            ViewPageMappingProvider.FindMappingForView = (type, b) => PageMapping;
            NavigationProvider.CurrentViewModel.ShouldBeNull();
            var viewModel = GetViewModel <NavigableViewModelMock>();

            NavigationService.OnNavigated(new NavigationEventArgsMock(new ViewMock {
                DataContext = viewModel
            }, NavigationMode.New));

            viewModel.CloseDelegate = obj =>
            {
                isCancelInvoked = true;
                var context = (INavigationContext)obj;
                context.NavigationProvider.ShouldEqual(NavigationProvider);
                context.NavigationMode.ShouldEqual(mode);
                return(ToolkitExtensions.FromResult(false));
            };
            viewModel.OnNavigatedFromDelegate = context => isNavigatedInvoked = true;

            var cancelArgs = new NavigatingCancelEventArgsMock(mode, true)
            {
                Cancel = false
            };

            NavigationService.OnNavigating(cancelArgs);
            cancelArgs.Cancel.ShouldBeTrue();
            isCancelInvoked.ShouldBeTrue();
            isNavigatedInvoked.ShouldBeFalse();
        }
        public void ProviderShouldNotCallOnNavigatingFromMethodNotCancelable()
        {
            bool isCancelInvoked      = false;
            bool isNavigatedInvoked   = false;
            const NavigationMode mode = NavigationMode.Refresh;

            ViewPageMappingProvider.FindMappingForView = (type, b) => PageMapping;
            NavigationProvider.CurrentViewModel.ShouldBeNull();
            var viewModel = GetViewModel <NavigableViewModelMock>();

            NavigationService.OnNavigated(new NavigationEventArgsMock(new ViewMock {
                DataContext = viewModel
            }, NavigationMode.New));

            NavigationDispatcher.OnNavigatingFromAsync = context =>
            {
                isCancelInvoked = true;
                context.NavigationProvider.ShouldEqual(NavigationProvider);
                context.NavigationMode.ShouldEqual(mode);
                return(ToolkitExtensions.FromResult(false));
            };
            NavigationDispatcher.OnNavigated = context => isNavigatedInvoked = true;

            var cancelArgs = new NavigatingCancelEventArgsMock(mode, false)
            {
                Cancel = false
            };

            NavigationService.OnNavigating(cancelArgs);

            isCancelInvoked.ShouldBeFalse();
            isNavigatedInvoked.ShouldBeFalse();
        }