public void CreatePartial()
{
// Arrange
var service = Substitute.For <IPizzaService>();
var controller = new PizzaController(service);
service.GetAllComponents().Returns(components);
// Act
var result = controller.CreatePartial() as PartialViewResult;
var viewName = result.ViewName;
var viewBagComponents = result.ViewBag.Components;
// Assert
Assert.That(result, !Is.Null);
Assert.That(viewBagComponents, !Is.Null);
Assert.That("_CreatePartial", Is.EqualTo(viewName));
}