public void RetrieveOrderServiceTest()
{
Order order = ObjectMother.GetOrder();
var repositoryFake = new Mock<IOrderRepository>();
repositoryFake.Setup(r => r.Get(1)).Returns(order);
IOrderService service = new OrderService(repositoryFake.Object);
var orderFake = service.Retrieve(1);
repositoryFake.Verify(r => r.Get(1));
Assert.IsNotNull(orderFake);
}