public async Task NavigateToCurrentViewModel_Calls_VieModel_OnNavigatedTo()
{
await ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame());
bool viewModelNavigatedToCalled = false;
var viewModel = new MockPageViewModel();
viewModel.OnNavigatedFromCommand = (a, b) => Assert.IsTrue(true);
viewModel.OnNavigatedToCommand = (parameter, navigationMode, frameState) =>
{
Assert.AreEqual(NavigationMode.New, navigationMode);
viewModelNavigatedToCalled = true;
};
// Set up the viewModel to the Page we navigated
frame.Navigated += (sender, e) =>
{
var view = frame.Content as FrameworkElement;
view.DataContext = viewModel;
};
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
navigationService.Navigate("Mock", 1);
Assert.IsTrue(viewModelNavigatedToCalled);
});
}
public async Task NavigateFromCurrentViewModel_Calls_VieModel_OnNavigatedFrom()
{
await ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame());
bool viewModelNavigatedFromCalled = false;
var viewModel = new MockPageViewModel();
viewModel.OnNavigatedFromCommand = (frameState, suspending) =>
{
Assert.IsFalse(suspending);
viewModelNavigatedFromCalled = true;
};
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
// Initial navigatio
navigationService.Navigate("page0", 0);
// Set up the frame's content with a Page
var view = new MockPage();
view.DataContext = viewModel;
frame.Content = view;
// Navigate to fire the NavigatedToCurrentViewModel
navigationService.Navigate("page1", 1);
Assert.IsTrue(viewModelNavigatedFromCalled);
});
}
public async Task Resuming_Calls_ViewModel_OnNavigatedTo()
{
await ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame());
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
navigationService.Navigate("Mock", 1);
var viewModel = new MockPageViewModel();
viewModel.OnNavigatedToCommand = (navigationParameter, navigationMode, frameState) =>
{
Assert.AreEqual(NavigationMode.Refresh, navigationMode);
};
var page = (MockPage)frame.Content;
page.DataContext = viewModel;
navigationService.RestoreSavedNavigation();
});
}
public async Task Suspending_Calls_VieModel_OnNavigatedFrom()
{
await ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame());
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
navigationService.Navigate("Mock", 1);
var viewModel = new MockPageViewModel();
viewModel.OnNavigatedFromCommand = (frameState, suspending) =>
{
Assert.IsTrue(suspending);
};
var page = (MockPage)frame.Content;
page.DataContext = viewModel;
navigationService.Suspending();
});
}