Внедрявам клас заявка за модел на хранилище и тествам с помощта на NSubstitute.
Интерфейс на хранилището:
public interface IMyRepository
{
IQueryable<T> Query<T>(Expression<Func<T, bool>> filter) where T : class;
}
Интерфейс на DateTimeProvider:
public interface IMyDateTimeProvider
{
DateTime GetDateNow();
}
Интерфейс на приложението:
public interface IMyApplication
{
List<Thing> GetThingsByQuery(int status);
}
Изпълнение на приложението:
public class MyApplication : IMyApplication
{
private readonly IMyRepository myRepository;
private readonly IMyDateTimeProvider myDateTimeProvider;
public MyApplication(IMyRepository myRepository, IMyDateTimeProvider myDateTimeProvider)
{
this.myRepository = myRepository;
this.myDateTimeProvider = myDateTimeProvider;
}
public List<Thing> GetThingsByQuery(int status)
{
var createdDate = this.myDateTimeProvider.GetDateNow();
return this.myRepository.Query<Thing>(t => t.CreatedDate == createdDate && t.Status == status).ToList();
}
}
Тест:
[TestClass]
public class ApplicationTest
{
private IMyApplication myApplication;
private IMyDateTimeProvider myDateTimeProvider;
private IMyRepository myRepository;
[TestMethod]
public void QueriesRepository()
{
// Arrange
var createdDate = new DateTime(2014, 1, 1);
this.myDateTimeProvider.GetDateNow().Returns(createdDate);
const int Status = 1;
// Act
this.myApplication.GetThingsByQuery(Status);
// Assert
this.myRepository.Received().Query<Thing>(t => t.CreatedDate == createdDate && t.Status == Status);
}
[TestInitialize]
public void TestInitialize()
{
this.myRepository = Substitute.For<IMyRepository>();
this.myDateTimeProvider = Substitute.For<IMyDateTimeProvider>();
this.myApplication = new MyApplication(this.myRepository, this.myDateTimeProvider);
}
}
Но тестът се проваля със следното съобщение:
NSubstitute.Exceptions.ReceivedCallsException: Expected to receive a call matching:
Query<Thing>(t => ((t.CreatedDate == value(MySolution.Test.ApplicationTest+<>c__DisplayClass0).createdDate) AndAlso (t.Status == 1)))
Actually received no matching calls.
Received 1 non-matching call (non-matching arguments indicated with '*' characters):
Query<Thing>(*t => ((t.CreatedDate == value(MySolution.Application.MyApplication+<>c__DisplayClass0).createdDate) AndAlso (t.Status == value(MySolution.Application.MyApplication+<>c__DisplayClass0).status))*)
DateTime и Status се анализират в value()
, които са различни между приложението и теста.
Защо е това? Как мога да поправя това?