标签：c unit-testing entity-framework moq entity-framework-6

我正在尝试使用Moq并使用EntityFramework.Testing.Moq扩展方法创建一些内存中的dbContext模拟：

https://github.com/scott-xu/EntityFramework.Testing

当我尝试使用模拟上下文对我急切加载的查询进行单元测试时,我正在打砖墙.问题是,根本没有选择任何东西.我知道应该选择一些东西,因为当我使用LINQPad将相同的查询指向我的源数据库时,我得到了我期望的2个结果.

我不知道我需要发布多少代码等,所以希望以下内容有所帮助.

数据图

我有两个主表,dbo.Applicant基本上保存用户详细信息,dbo.Application,它保存作业应用程序,有dbo.Application挂钩的查找表：

示例模型

这是基于上图的代码优先方法.我删除了属性以保持代码清洁,并且问题的重点是：

[Table("Application")]
public partial class Application
{
    [Min(1)]
    public int Id { get; set; }

    [Required]
    [StringLength(50)]
    public string ApplicationId { get; set; }

    [Min(1)]
    public int ApplicantId { get; set; }

    public virtual Applicant Applicant { get; set; }     
}

[Table("Applicant")]
public partial class Applicant
{
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
    public Applicant()
    {
        Applications = new HashSet<Application>();
        RowStatus = "L";
    }

    public int Id { get; set; }

    [Required]
    public string FullName { get; set; }

    [Required]
    public string AddressLine1 { get; set; }

    [Required]
    public string Email { get; set; }

    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<Application> Applications { get; set; }
}

上下文

再次减少上下文,但以防万一我在评论中要求它：

public partial class WorkExperienceContext : DbContext
{
    public WorkExperienceContext()
        : base("name=WorkExperienceContext")
    {
        this.Configuration.LazyLoadingEnabled = false;

    }

    public WorkExperienceContext(string userTestConnectionString)
        : base(userTestConnectionString)
    {
        Trace.Write("Using test context " + Add to dictionary);
    }

    public virtual DbSet<Applicant> Applicants { get; set; }
    public virtual DbSet<Application> Applications { get; set; }

}

单元测试方法

以下是(再次)Unit测试方法的简化版本,我希望根据电子邮件提取两个应用程序记录.

从下面可以看到,有：

> 2 Lucifer的申请记录(ApplicantId = 666)
>有一份申请人记录,其中包含misunderstood@fireandbrimestone.co.uk的电子邮件

我的问题是test为null,当使用相同的代码查询数据库本身时,我得到了正确的结果.我很困惑我需要做什么.请记住,我正在使用EntityFramework.Testing.Moq.SetupData()方法来处理DbSet方法的模拟并转换List<>将数据播种到IQueryable集合.

    public void InMemory_Find_Application_By_Email_EFMoq()
    {

        var applications = new List<Application>
        {
            new Application { Id = 1, ApplicantId = 666, ApplicationId = "1-a", DivisionId = 2, PublishingAreaId = 4, SourceId = 2, SkillsLearnt = "How to pick up  pen", RowStatus="L", ApplicantStartDateId = 1,
                ApplicantDisabilityId = 2, CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay } ,
            new Application { Id = 2, ApplicantId = 666, ApplicationId = "1-a", DivisionId = 3, PublishingAreaId = 4, SourceId = 2, SkillsLearnt = "How to pick up  pen", RowStatus="L", ApplicantStartDateId = 1,
                ApplicantDisabilityId = 2,CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay   } ,
            new Application { Id = 3, ApplicantId = 5, ApplicationId = "1-b", DivisionId = 3, PublishingAreaId = 1, SourceId = 2, SkillsLearnt = "Reading a book well" , RowStatus="L", ApplicantStartDateId = 1,
                ApplicantDisabilityId = 2,CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay     } ,
            new Application { Id = 4, ApplicantId = 5, ApplicationId = "1-b", DivisionId = 2, PublishingAreaId = 1, SourceId = 2, SkillsLearnt = "Reading a book well ", RowStatus="L", ApplicantStartDateId = 1,
                ApplicantDisabilityId = 2  ,CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay   } ,
            new Application { Id = 5, ApplicantId = 5, ApplicationId = "1-b", DivisionId = 7, PublishingAreaId = 1, SourceId = 2, SkillsLearnt = "Reading a book well" , RowStatus="L", ApplicantStartDateId = 1,
                ApplicantDisabilityId = 2 ,CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay    } ,
            new Application { Id = 6, ApplicantId = 24, ApplicationId = "1-c", DivisionId = 10, PublishingAreaId = 3, SourceId = 1, SkillsLearnt = "I can now re-iterate stuff", RowStatus="L", ApplicantStartDateId = 1,
                ApplicantDisabilityId = 2,CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay  },
            new Application { Id = 7, ApplicantId = 21, ApplicationId = "1-d", DivisionId = 2, PublishingAreaId = 2, SourceId = 1, SkillsLearnt = "I made some bread the other day", RowStatus="L", ApplicantStartDateId = 1,
                ApplicantDisabilityId = 2 ,CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay   }
        };

        var applicants = new List<Applicant>
        {
            new Applicant {Id = 5, FullName = "Pen Is", AddressLine1="Somewhere Over the Rainbow", County="West Sussex", Email="pen_is@hotmail.co.uk", RowStatus = "L",
            GenderId = 2, EducationId = 1, CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay, PostCode="PEN 1ST", Telephone="N/A"},
            new Applicant {Id = 24, FullName = "Gareth Bradley", AddressLine1="an address", County="West Sussex", Email="gareth.bradley@hachette.co.uk", RowStatus = "L",
            GenderId = 2, EducationId = 1, CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay, PostCode="bn13 3qb",Telephone="N/A"}  ,
            new Applicant {Id = 21, FullName = "Lizzy Windsor", AddressLine1="A Palace (Take your pick)", County="Berkshire", Email="HerRoyalMaj@TheCrownJewels.co.uk", RowStatus = "L",
            GenderId = 2, EducationId = 1, CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay, PostCode="BE1 1HM",Telephone="N/A"} ,
            new Applicant {Id = 666, FullName = "Lucifer MorningStar", AddressLine1="Hotsy Street", County="Down South", Email="misunderstood@fireandbrimes1one.co.uk" , RowStatus = "L",
            GenderId = 3, EducationId = 1, CreatedDate = DateTime.Now, CreatedTime = DateTime.Now.TimeOfDay, PostCode="HE11 6SS",Telephone="666-666"}
        };


        foreach (Applicant applicant in applicants)
        {
            applicant.Applications = applications.Where(a => a.ApplicantId == applicant.Id).ToArray();

        }

        foreach (Application application in applications)
        {
            application.Applicant = applicants.SingleOrDefault(a => a.Id == application.ApplicantId);
        }

        var mockSet = new Mock<DbSet<Application>>()
            .SetupData(applications);

        var mockSetUsers = new Mock<DbSet<Applicant>>()
            .SetupData(applicants);

        var mockContext = new Mock<WorkExperienceContext>();
        mockContext.Setup(c => c.Applications).Returns(mockSet.Object);
        mockContext.Setup(c => c.Applicants).Returns(mockSetUsers.Object);

        var mockService = new WorkExperienceFormService(mockContext.Object);

        var test = mockContext.Object
                 .Applications
                 .Include(a => a.Applicant)
                 .Where(e => e.Applicant.Email == "misunderstood@fireandbrimestone.co.uk")  
                 .ToList();

        Assert.AreEqual(2, test.Count());
    }

以下是我的LINQPad在没有模拟上下文的情况下提取数据的证据：

解决方法:

也许这是你发布代码时的错字,但是’Lucifer MorningStar’的电子邮件是
misunderstood@fireandbrimes1one.co.uk而不是
misunderstood@fireandbrimestone.co.uk

标签：c,unit-testing,entity-framework,moq,entity-framework-6
来源： https://codeday.me/bug/20190608/1197921.html

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