var someVM = new SomeViewModel();
someVM.LoadCommand.Execute(model);

var context = Controller.Action("Controller", "Method", new { model = someVM }).Result as ViewResult;
If.Real<ViewResult>(context, c => c.ViewClosed += (s, e) =>
{
	var result = (e.ViewResult.Model as SomeViewModel).Result;
	if (result.CloseViewReason == CloseViewReason.Edited)
	{

	}
});