public void OnSaved_Test()
{
var model = new ProviderFieldEditList { DataPortal.CreateChild<ProviderFieldEdit>(), DataPortal.CreateChild<ProviderFieldEdit>() };
var vm = new SourceFieldsViewModel { Model = model, SelectedProviderField = model.First() };
var newModel = new ProviderFieldEditList();
vm.OnSaved(newModel);
Assert.AreSame(newModel, vm.Model);
Assert.AreSame(newModel.FirstOrDefault(), vm.SelectedProviderField);
}
