public void WhenUpdatingVehicleSortOrder_InvokesHandler() { Mock <UpdateVehicleSortOrder> handler = MockHandlerFor(() => new Mock <UpdateVehicleSortOrder>(null)); const string newOrder = "3,2,1"; var sortOrder = new UpdateVehicleSortOrderViewModel { SortOrder = newOrder }; TestableVehicleController controller = GetTestableVehicleController(); controller.UpdateSortOrder(sortOrder); handler.Verify(x => x.Execute(defaultUserInfo.UserId, new[] { 3, 2, 1 })); }