c# - 模拟参数的属性更改 - 使用 Moq

Question

我正在使用 Moq 来模拟我的存储库层，以便我可以进行单元测试。

当成功插入数据库时​​，我的存储库层插入方法会更新我的实体的 Id 属性。

如何配置最小起订量以在调用 Insert 方法时更新实体的 Id 属性？

存储库代码:-

void IAccountRepository.InsertAccount(AccountEntity account);

单元测试:-

[TestInitialize()]
public void MyTestInitialize() 
{
    accountRepository = new Mock<IAccountRepository>();
    contactRepository = new Mock<IContactRepository>();
    contractRepository = new Mock<IContractRepository>();
    planRepository = new Mock<IPlanRepository>();
    generator = new Mock<NumberGenerator>();

    service = new ContractService(contractRepository.Object, accountRepository.Object, 
                    planRepository.Object, contactRepository.Object, generator.Object);   
}


[TestMethod]
public void SubmitNewContractTest()
{
    // Setup Mock Objects
    planRepository
        .Expect(p => p.GetPlan(1))
        .Returns(new PlanEntity() { Id = 1 });

    generator
        .Expect(p => p.GenerateAccountNumber())
        .Returns("AC0001");

    // Not sure what to do here? 
    // How to mock updating the Id field for Inserts?
    //                                                 
    // Creates a correctly populated NewContractRequest instance
    NewContractRequest request = CreateNewContractRequestFullyPopulated();

    NewContractResponse response = service.SubmitNewContract(request);
    Assert.IsTrue(response.IsSuccessful);
}

来自 ContractService 类(WCF 服务契约)的实现片段。

AccountEntity account = new AccountEntity()
{
    AccountName = request.Contact.Name,
    AccountNumber = accountNumber,
    BillingMethod = BillingMethod.CreditCard,
    IsInvoiceRoot = true,
    BillingAddressType = BillingAddressType.Postal,
    ContactId = request.Contact.Id.Value
};

accountRepository.InsertAccount(account);
if (account.Id == null)
{
    // ERROR
}

如果这些信息可能有点缺乏，我深表歉意。我今天才开始学习最小起订量和模拟框架。交流

Answer 1

您可以使用回调方法模拟副作用。像这样的东西:

accountRepository
    .Expect(r => r.InsertAccount(account))
    .Callback(() => account.ID = 1);

那是未经测试的，但它是正确的。