C# Mocks.PageNavigationServiceMock类代码示例

        public void Navigate_ToUnregisteredPage_ByName()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new Xamarin.Forms.Page();
            ((IPageAware)navigationService).Page = rootPage;

            navigationService.Navigate("UnregisteredPage");

            Assert.True(rootPage.Navigation.ModalStack.Count == 0);
        }

        public void NavigateAsync_ToContentPage_ByName()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new Xamarin.Forms.NavigationPage();
            ((IPageAware)navigationService).Page = rootPage;

            navigationService.Navigate("ContentPage", useModalNavigation: false);

            Assert.True(rootPage.Navigation.NavigationStack.Count == 1);
            Assert.IsType(typeof(ContentPageMock), rootPage.Navigation.NavigationStack[0]);
        }

        public async void Navigate_ToContentPage_ByName()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new Xamarin.Forms.ContentPage();
            ((IPageAware)navigationService).Page = rootPage;

            await navigationService.Navigate("ContentPage");

            Assert.True(rootPage.Navigation.ModalStack.Count == 1);
            Assert.IsType(typeof(ContentPageMock), rootPage.Navigation.ModalStack[0]);
        }

        public void Navigate_ToUnregisteredPage_ByName()
        {
            Assert.ThrowsAsync<NullReferenceException>(async () =>
            {
                var navigationService = new PageNavigationServiceMock(_container, _applicationProvider, _loggerFacade);
                var rootPage = new Xamarin.Forms.ContentPage();
                ((IPageAware)navigationService).Page = rootPage;

                await navigationService.NavigateAsync("UnregisteredPage");

                Assert.True(rootPage.Navigation.ModalStack.Count == 0);
            });
        }

        public async void Navigate_FromMasterDetailPage_ToTabbedPage_IsNotPresented_FromViewModel()
        {
            var navigationService = new PageNavigationServiceMock(_container, _applicationProvider, _loggerFacade);
            var rootPage = new MasterDetailPageEmptyMock();
            ((IPageAware)navigationService).Page = rootPage;

            ((MasterDetailPageEmptyMockViewModel)rootPage.BindingContext).IsPresentedAfterNavigation = false;

            Assert.Null(rootPage.Detail);
            Assert.False(rootPage.IsPresented);            

            await navigationService.NavigateAsync("TabbedPage");
            Assert.IsType(typeof(TabbedPageMock), rootPage.Detail);

            Assert.False(rootPage.IsPresented);
        }

        public void DeepNavigate_ToMasterDetailPage_ToSamePage_ToTabbedPage()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new Xamarin.Forms.Page();
            ((IPageAware)navigationService).Page = rootPage;

            navigationService.Navigate("MasterDetailPage/ContentPage/TabbedPage");

            var masterDetail = rootPage.Navigation.ModalStack[0] as MasterDetailPageMock;
            Assert.NotNull(masterDetail);
            Assert.NotNull(masterDetail.Detail);
            Assert.IsType(typeof(ContentPageMock), masterDetail.Detail);

            var tabbedPage = masterDetail.Navigation.ModalStack[0] as TabbedPageMock;
            Assert.NotNull(tabbedPage);
        }

        public void Navigate_FromMasterDetailPage_ToSamePage()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new MasterDetailPageMock();
            ((IPageAware)navigationService).Page = rootPage;

            Assert.IsType(typeof(ContentPageMock), rootPage.Detail);

            navigationService.Navigate("TabbedPage");

            var firstDetailPage = rootPage.Detail;

            Assert.IsType(typeof(TabbedPageMock), firstDetailPage);

            navigationService.Navigate("TabbedPage");

            Assert.Equal(firstDetailPage, rootPage.Detail);
        }

 public void IPageAware_NullByDefault()
 {
     var navigationService = new PageNavigationServiceMock(_container);
     var page = ((IPageAware)navigationService).Page;
     Assert.Null(page);
 }

        public void Navigate_ToMasterDetailPage_ViewModelHasINavigationAware()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new Xamarin.Forms.Page();
            ((IPageAware)navigationService).Page = rootPage;

            navigationService.Navigate("MasterDetailPage");

            Assert.True(rootPage.Navigation.ModalStack.Count == 1);

            var mdPage = rootPage.Navigation.ModalStack[0] as MasterDetailPage;
            Assert.NotNull(mdPage);

            var viewModel = mdPage.BindingContext as MasterDetailPageMockViewModel;
            Assert.NotNull(viewModel);
            Assert.True(viewModel.OnNavigatedToCalled);

            Assert.NotNull(mdPage.Detail);

            Assert.IsType(typeof(ContentPageMock), mdPage.Detail);
            var childViewModel = mdPage.Detail.BindingContext as ContentPageMockViewModel;
            Assert.NotNull(childViewModel);
            Assert.True(childViewModel.OnNavigatedToCalled);
        }

        public async void DeepNavigate_ToTabbedPage_ToPage()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new Xamarin.Forms.ContentPage();
            ((IPageAware)navigationService).Page = rootPage;

            await navigationService.Navigate("TabbedPage/PageMock");

            var tabbedPage = rootPage.Navigation.ModalStack[0] as TabbedPageMock;
            Assert.NotNull(tabbedPage);
            Assert.NotNull(tabbedPage.CurrentPage);
            Assert.IsType(typeof(PageMock), tabbedPage.CurrentPage);
        }

        public async void Navigate_FromMasterDetailPage()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new MasterDetailPageMock();
            ((IPageAware)navigationService).Page = rootPage;

            Assert.IsType(typeof(ContentPageMock), rootPage.Detail);

            await navigationService.Navigate("TabbedPage");

            Assert.IsType(typeof(TabbedPageMock), rootPage.Detail);

            await navigationService.Navigate("CarouselPage");

            Assert.IsType(typeof(CarouselPageMock), rootPage.Detail);
        }

        public async void DeepNavigate_From_ContentPage_To_EmptyNavigationPage_ToContentPage()
        {
            var navigationService = new PageNavigationServiceMock(_container);
            var rootPage = new Xamarin.Forms.ContentPage();
            ((IPageAware)navigationService).Page = rootPage;

            await navigationService.Navigate("ContentPage/NavigationPage-Empty/ContentPage");

            var navPage = rootPage.Navigation.ModalStack[0].Navigation.ModalStack[0];
            Assert.True(navPage.Navigation.NavigationStack.Count == 1);
        }

        public async void NavigateAsync_ToContentPage_ThenGoBack()
        {
            var pageMock = new ContentPageMock();
            var navigationService = new PageNavigationServiceMock(_container);
            ((IPageAware)navigationService).Page = pageMock;

            var rootPage = new NavigationPage(pageMock);

            Assert.IsType(typeof(ContentPageMock), rootPage.CurrentPage);

            await navigationService.Navigate("TabbedPage");

            Assert.True(rootPage.Navigation.NavigationStack.Count == 2);
            Assert.IsType(typeof(TabbedPageMock), rootPage.CurrentPage);

            await navigationService.GoBack();

            Assert.True(rootPage.Navigation.NavigationStack.Count == 1);
            Assert.IsType(typeof(ContentPageMock), rootPage.CurrentPage);
        }

        public async void Navigate_ToContentPage_ByRelativeUri()
        {
            var navigationService = new PageNavigationServiceMock(_container, _applicationProvider, _loggerFacade);
            var rootPage = new Xamarin.Forms.ContentPage();
            ((IPageAware)navigationService).Page = rootPage;

            await navigationService.NavigateAsync(new Uri("ContentPage", UriKind.Relative));

            Assert.True(rootPage.Navigation.ModalStack.Count == 1);
            Assert.IsType(typeof(ContentPageMock), rootPage.Navigation.ModalStack[0]);
        }

        public async void DeepNavigate_ToCarouselPage_ToContentPage()
        {
            var navigationService = new PageNavigationServiceMock(_container, _applicationProvider, _loggerFacade);
            var rootPage = new Xamarin.Forms.ContentPage();
            ((IPageAware)navigationService).Page = rootPage;

            await navigationService.NavigateAsync("CarouselPage/ContentPage");

            var tabbedPage = rootPage.Navigation.ModalStack[0] as CarouselPageMock;
            Assert.NotNull(tabbedPage);
            Assert.NotNull(tabbedPage.CurrentPage);
            Assert.IsType(typeof(ContentPageMock), tabbedPage.CurrentPage);
        }