问题描述
我设法模拟了实体框架dbcontext和dbset，以允许针对存储库组件进行单元测试查询功能。
I've managed to Mock an Entity Framework dbcontext and dbset to allow for unit testing querying functions against a repository component.
我无法针对使用Entity Frameworks的AddOrUpdate（）方法的方法执行成功的测试。收到的错误是：
I've been unable to perform a successful test against an a method using Entity Frameworks' AddOrUpdate() method. The error received is:
无法在派生的IDbSet类型'Castle.Proxies.DbSet`1Proxy'上调用公共实例方法AddOrUpdate。找不到方法。
"Unable to call public, instance method AddOrUpdate on derived IDbSet type 'Castle.Proxies.DbSet`1Proxy'. Method not found."
是否有可能对此进行测试？
Is it at all possible to test this?
private IRepository _Sut;
private Mock<DbSet<JobListing>> _DbSet;
private Mock<RecruitmentDb> _DbContext;
[SetUp]
public void Setup()
{
_DbContext = new Mock<RecruitmentDb>();
var JobsData = GenerateJobs().AsQueryable();
_DbSet = new Mock<DbSet<JobListing>>();
_DbSet.As<IQueryable<JobListing>>().Setup(x => x.Provider).Returns(JobsData.Provider);
_DbSet.As<IQueryable<JobListing>>().Setup(x => x.Expression).Returns(JobsData.Expression);
_DbSet.As<IQueryable<JobListing>>().Setup(x => x.ElementType).Returns(JobsData.ElementType);
_DbSet.As<IQueryable<JobListing>>().Setup(x => x.GetEnumerator()).Returns(JobsData.GetEnumerator());
_DbContext.Setup(x => x.JobListings).Returns(_DbSet.Object);
_Sut = new JobListingRepository(_DbContext.Object);
}
[Test]
public void Update_ChangedTitleProperty_UpdatedDetails()
{
var Actual = GenerateJobs().First();
var OriginalJob = Actual;
Actual.Title = "Newly Changed Title";
_Sut.Update(Actual);
Actual.Title.Should().NotBe(OriginalJob.Title);
Actual.Id.Should().Be(OriginalJob.Id);
}
private List<JobListing> GenerateJobs()
{
return new List<JobListing>
{
new JobListing{ Id = 1,
Title = "Software Developer",
ShortDescription = "This is the short description",
FullDescription = "This is the long description",
Applicants = new List<Applicant>(),
ClosingDate = DateTime.Now.AddMonths(5).Date},
new JobListing{
Id = 2,
Title = "Head Chef",
ShortDescription = "This is the short description",
FullDescription = "This is the long description",
Applicants = new List<Applicant>(),
ClosingDate = DateTime.Now.AddMonths(2).Date
},
new JobListing
{
Id = 3,
Title = "Chief Minister",
ShortDescription = "This is the short description",
FullDescription = "This is the long description",
Applicants = new List<Applicant>(),
ClosingDate = DateTime.Now.AddMonths(2).Date
}
};
}
推荐答案
问题是因为AddOrUpdate是扩展方法。我通过设计包装器解决了这个问题。您可以模拟/存根IAddOrUpdateHelper接口。
The issue is because AddOrUpdate is an extension method. I overcame this issue by designing a wrapper. You can mock/stub the IAddOrUpdateHelper interface instead.
public class AddOrUpdateHelper : IAddOrUpdateHelper
{
public void AddOrUpdateEntity<TEntity>(DataContext db, params TEntity[] entities) where TEntity : class
{
db.Set<TEntity>().AddOrUpdate(entities);
}
}
public interface IAddOrUpdateHelper
{
void AddOrUpdateEntity<TEntity>(DataContext db, params TEntity[] entities) where TEntity : class;
}
这篇关于结合使用带有实体框架6存储库的AddOrUpdate的单元测试方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！