public void WhenAnyChainingShouldReportChanges()
{
var fixture = new TestView();
var output = new List <string>();
fixture.WhenAnyDP(x => x.ViewModel, x => x.Value)
.Where(x => x != null)
.Select(x => x.WhenAny(y => y.SomeProperty, y => y.Value)).Switch()
.Subscribe(output.Add);
Assert.Equal(0, output.Count);
fixture.ViewModel = new TestViewModel()
{
SomeProperty = "Foo",
};
Assert.Equal(1, output.Count);
fixture.ViewModel.SomeProperty = "Bar";
Assert.Equal(2, output.Count);
}