public void WhenNavigatedToCallsDisposeWhenNavigationStackIsReset()
{
var count = 0;
var screen = new TestScreen();
var vm1 = new RoutableViewModel(screen);
var vm2 = new RoutableViewModel(screen);
vm1.WhenNavigatedTo(() =>
{
return(Disposable.Create(() => count++));
});
screen.Router.Navigate.Execute(vm1);
Assert.Equal(0, count);
screen.Router.NavigateAndReset.Execute(vm2);
Assert.Equal(1, count);
}
public void WhenNavigatedToCallsOnNavigatedToWhenViewModelReturnsToTopOfStack()
{
var count = 0;
var screen = new TestScreen();
var vm = new RoutableViewModel(screen);
var vm2 = new RoutableViewModel(screen);
vm.WhenNavigatedTo(() =>
{
count++;
return Disposable.Empty;
});
screen.Router.Navigate.Execute(vm);
screen.Router.Navigate.Execute(vm2);
screen.Router.Navigate.Execute(vm);
Assert.Equal(2, count);
}
public void CurrentViewModelObservableIsAccurateViaWhenAnyObservable()
{
var fixture = new TestScreen();
fixture.WhenAnyObservable(x => x.Router !.CurrentViewModel).ToObservableChangeSet(ImmediateScheduler.Instance).Bind(out var output).Subscribe();
fixture.Router = new RoutingState();
Assert.Equal(1, output.Count);
fixture.Router.Navigate.Execute(new TestViewModel {
SomeProp = "A"
});
Assert.Equal(2, output.Count);
fixture.Router.Navigate.Execute(new TestViewModel {
SomeProp = "B"
});
Assert.Equal(3, output.Count);
Assert.Equal("B", ((TestViewModel)output.Last()).SomeProp);
fixture.Router.NavigateBack.Execute();
Assert.Equal(4, output.Count);
Assert.Equal("A", ((TestViewModel)output.Last()).SomeProp);
}