我有一个带有实体框架（代码优先方法）的 N 层应用程序。现在我想自动化一些测试。我正在使用Moq 框架。我在编写测试时发现了一些问题。也许我的架构是错误的？错了，我的意思是我编写的组件没有很好地隔离，因此它们不可测试。我不太喜欢这个……或者，我根本无法正确使用 moq 框架。
我让你看看我的架构：
在每个级别，我都将我的注入context到类的构造函数中。
门面：
public class PublicAreaFacade : IPublicAreaFacade, IDisposable
{
private UnitOfWork _unitOfWork;
public PublicAreaFacade(IDataContext context)
{
_unitOfWork = new UnitOfWork(context);
}
}
BLL：
public abstract class BaseManager
{
protected IDataContext Context;
public BaseManager(IDataContext context)
{
this.Context = context;
}
}
存储库：
public class Repository<TEntity>
where TEntity : class
{
internal PublicAreaContext _context;
internal DbSet<TEntity> _dbSet;
public Repository(IDataContext context)
{
this._context = context as PublicAreaContext;
}
}
IDataContext是由我的 DbContext 实现的接口：
public partial class PublicAreaContext : DbContext, IDataContext
现在，我如何模拟EF以及如何编写测试：
[TestInitialize]
public void Init()
{
this._mockContext = ContextHelper.CreateCompleteContext();
}
在哪里ContextHelper.CreateCompleteContext()：
public static PublicAreaContext CreateCompleteContext()
{
//Here I mock my context
var mockContext = new Mock<PublicAreaContext>();
//Here I mock my entities
List<Customer> customers = new List<Customer>()
{
new Customer() { Code = "123455" }, //Customer with no invoice
new Customer() { Code = "123456" }
};
var mockSetCustomer = ContextHelper.SetList(customers);
mockContext.Setup(m => m.Set<Customer>()).Returns(mockSetCustomer);
...
return mockContext.Object;
}
在这里我如何编写我的测试：
[TestMethod]
public void Success()
{
#region Arrange
PrepareEasyPayPaymentRequest request = new PrepareEasyPayPaymentRequest();
request.CodiceEasyPay = "128855248542874445877";
request.Servizio = "MyService";
#endregion
#region Act
PublicAreaFacade facade = new PublicAreaFacade(this._mockContext);
PrepareEasyPayPaymentResponse response = facade.PrepareEasyPayPayment(request);
#endregion
#region Assert
Assert.IsTrue(response.Result == it.MC.WebApi.Models.ResponseDTO.ResponseResult.Success);
#endregion
}
这里似乎一切正常！！！看起来我的架构是正确的。但是如果我想插入/更新一个实体呢？没有任何工作了！我解释为什么：
如您所见，我将一个*Request对象（它是 DTO）传递给外观，然后在我的 TOA 中，我从 DTO 的属性生成我的实体：
private PaymentAttemptTrace CreatePaymentAttemptTraceEntity(string customerCode, int idInvoice, DateTime paymentDate)
{
PaymentAttemptTrace trace = new PaymentAttemptTrace();
trace.customerCode = customerCode;
trace.InvoiceId = idInvoice;
trace.PaymentDate = paymentDate;
return trace;
}
PaymentAttemptTrace是我将插入到实体框架的实体。它没有被模拟，我无法注入它。因此，即使我通过了我的模拟上下文（IDataContext），当我尝试插入一个未模拟的实体时，我的测试也会失败！
这里有人怀疑我有一个错误的架构！
那么，怎么了？我使用最小起订量的架构或方式？
谢谢你的帮助
更新
这里我如何测试我的代码..例如，我想测试支付的痕迹..
这里是测试：
[TestMethod]
public void NoPaymentDate()
{
TracePaymentAttemptRequest request = new TracePaymentAttemptRequest();
request.AliasTerminale = "MyTerminal";
//...
//I create my request object
//You can see how I create _mockContext above
PublicAreaFacade facade = new PublicAreaFacade(this._mockContext);
TracePaymentAttemptResponse response = facade.TracePaymentAttempt(request);
//My asserts
}
这里的门面：
public TracePaymentAttemptResponse TracePaymentAttempt(TracePaymentAttemptRequest request)
{
TracePaymentAttemptResponse response = new TracePaymentAttemptResponse();
try
{
...
_unitOfWork.PaymentsManager.SavePaymentAttemptResult(
easyPay.CustomerCode,
request.CodiceTransazione,
request.EsitoPagamento + " - " + request.DescrizioneEsitoPagamento,
request.Email,
request.AliasTerminale,
request.NumeroContratto,
easyPay.IdInvoice,
request.TotalePagamento,
paymentDate);
_unitOfWork.Commit();
response.Result = ResponseResult.Success;
}
catch (Exception ex)
{
response.Result = ResponseResult.Fail;
response.ResultMessage = ex.Message;
}
return response;
}
这是我如何开发的PaymentsManager：
public PaymentAttemptTrace SavePaymentAttemptResult(string customerCode, string transactionCode, ...)
{
//here the problem... PaymentAttemptTrace is the entity of entity framework.. Here i do the NEW of the object.. It should be injected, but I think it would be a wrong solution
PaymentAttemptTrace trace = new PaymentAttemptTrace();
trace.customerCode = customerCode;
trace.InvoiceId = idInvoice;
trace.PaymentDate = paymentDate;
trace.Result = result;
trace.Email = email;
trace.Terminal = terminal;
trace.EasypayCode = transactionCode;
trace.Amount = amount;
trace.creditCardId = idCreditCard;
trace.PaymentMethod = paymentMethod;
Repository<PaymentAttemptTrace> repository = new Repository<PaymentAttemptTrace>(base.Context);
repository.Insert(trace);
return trace;
}
最后我是如何编写存储库的：
public class Repository<TEntity>
where TEntity : class
{
internal PublicAreaContext _context;
internal DbSet<TEntity> _dbSet;
public Repository(IDataContext context)
{
//the context is mocked.. Its type is {Castle.Proxies.PublicAreaContextProxy}
this._context = context as PublicAreaContext;
//the entity is not mocked. Its type is {PaymentAttemptTrace} but should be {Castle.Proxies.PaymentAttemptTraceProxy}... so _dbSet result NULL
this._dbSet = this._context.Set<TEntity>();
}
public virtual void Insert(TEntity entity)
{
//_dbSet is NULL so "Object reference not set to an instance of an object" exception is raised
this._dbSet.Add(entity);
}
}