AAA with Moq

With the introduction of Moq (The only mocking library for .NET developed from scratch to take full advantage of .NET 3.5 (i.e. Linq expression trees) and C# 3.0 features (i.e. lambda expressions)), developing unit test cases can be more productive, type-safe and refactoring-friendly. With Moq I don’t have to write my Record/ Playback methods and can be used as a very simple API.

I have re-written my previous sample of AAA pattern using moq as

[TestClass()]

public class When_Getting_All_Products_From_Store : ArrangeAssertActTearDown<ProductService>

{

private Mock<IProductRepository> ___ProductRepository;

private Mock<IStoreRepository> ___StoreRepository;

private Store ___Store;

private IEnumerable<Product> ___Products;

private long __StoreIntId = 3;

public override void Arrange()

{

___ProductRepository = new Mock<IProductRepository>();

___StoreRepository = new Mock<IStoreRepository>();

}

public override ProductService CreateSUT()

{

return new ProductService(___ProductRepository.Object, ___StoreRepository.Object);

}

public override void Act()

{

___Store = new Store();

___Products = new List<Product>();

//Use of lambda expressions and no Record here!!

___StoreRepository.Setup<Store>(x => x.FindBy(__StoreIntId)).Returns(___Store);

___ProductRepository.Setup<IEnumerable<Product>>(x => x.GetAllProductsFor(___Store)).Returns(___Products);

}

[TestMethod]

[ExpectedException(typeof(ArgumentException))]

public void Should_Throw_Argument_Exception_If_StoreId_Is_Greater_Than_100()

{

var __Target = new ProductService();

var __Result = __Target.GetAllProductsForStore(110);

}

[TestMethod]

public void Should_Return_A_List_Of_Records()

{

//No Playback too

var __Result = SystemUnderTest.GetAllProductsForStore(__StoreIntId);

Assert.AreEqual<IEnumerable<Product>>(__Result, ___Products);

}

public override void TearDown()

{

___ProductRepository = null;

___StoreRepository = null;

}

}

I have also removed by BaseRepository class from the code and moved the mocking code to the test class.