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();
}