Effort（EF单元测试）给出错误

我正在尝试对某些在实体框架数据库上下文上回复的类进行单元测试。为了获得帮助，我设法找到了一个名为Effort的图书馆，这个图书馆似乎有点旧，但没有很好的文档记录，但它似乎有效，似乎很受欢迎。Effort（EF单元测试）给出错误

我想使用CSV数据加载器。

在做ToArray()时，我收到一个例外情况，说Sequence contains no matching element。

关于我可能做错的任何想法？或者，如果不是一个不同的图书馆，我可能想给一个机会？

几个片段：

[Table("SEC_USER")] 
public class SecUser { 
    [Key][Column("USERID")] 
    public int UserId { get; set; } 

    [Column("USERNAME")] 
    public string UserName { get; set; } 
}

DB语境：

public class MusketeerDbContext : DbContext 
{ 
    public virtual IDbSet<IbsCommunity> Communities { get; set; } 
    public virtual IDbSet<IbsFunctionLinkLocation> Functionlinklocations { get; set; } 
    public virtual IDbSet<IbsInstance> Instances { get; set; } 
    public virtual IDbSet<SecUser> Users { get; set; } 
    public virtual IDbSet<IbsFieldType> FieldTypes { get; set; } 
    public virtual IDbSet<IbsLink> Links { get; set; } 
    public virtual IDbSet<IbsFieldFll> FieldFlls { get; set; } 
    public virtual IDbSet<IbsFieldValue> FieldValues { get; set; } 

    public MusketeerDbContext() : base("name=EGS.My.MySettings.Conn") { } 
    public MusketeerDbContext(DbConnection connection) : base(connection, true) { } 

    protected override void OnModelCreating(DbModelBuilder modelBuilder) 
    { 
     modelBuilder.HasDefaultSchema("SA"); 
     modelBuilder.Conventions.Add(new FunctionConvention(typeof(OracleFunctions))); 

     modelBuilder.Entity<IbsFieldValue>() 
      .HasMany(fv => fv.InstancesFieldValues) 
      .WithMany(i => i.InstancesFieldValues) 
      .Map(mm => 
      { 
       mm.MapLeftKey("FIELDVALUEID"); 
       mm.MapRightKey("INSTANCEID"); 
       mm.ToTable("IBS_INSTANCEFIELDVALUE"); 
      }); 
    } 
} 

public static class OracleFunctions 
{ 
    [Function(FunctionType.BuiltInFunction, "TO_CHAR")] 
    public static string ToChar(this int value) => Function.CallNotSupported<string>(); 

    [Function(FunctionType.BuiltInFunction, "TO_NCHAR")] 
    public static string ToChar(this string value) => Function.CallNotSupported<string>(); 
}

的SEC_USER.csv：

USERID,USERNAME 
"1","Jonathan"

测试：

var path = @"C:\...\CSVs"; 
var dataLoader = new Effort.DataLoaders.CsvDataLoader(path); 
var context = Effort.DbConnectionFactory.CreateTransient(dataLoader); 
db = new MusketeerDbContext(context); 
var users = db.Users.ToArray();

System.InvalidOperationException：

Message: "Sequence contains no matching element" 
InnerException: null 
StackTrace: 
    at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate) 
    at System.Data.Entity.Utilities.DbProviderManifestExtensions.GetStoreTypeFromName(DbProviderManifest providerManifest, String name) 
    at System.Data.Entity.ModelConfiguration.Configuration.Properties.Primitive.PrimitivePropertyConfiguration.ConfigureColumn(EdmProperty column, EntityType table, DbProviderManifest providerManifest) 
    at System.Data.Entity.ModelConfiguration.Configuration.Properties.Primitive.PrimitivePropertyConfiguration.Configure(EdmProperty column, EntityType table, DbProviderManifest providerManifest, Boolean allowOverride, Boolean fillFromExistingConfiguration) 
    at System.Data.Entity.ModelConfiguration.Configuration.Properties.Primitive.PrimitivePropertyConfiguration.<>c__DisplayClass4.<Configure>b__3(Tuple`2 pm) 
    at System.Data.Entity.Utilities.IEnumerableExtensions.Each[T](IEnumerable`1 ts, Action`1 action) 
    at System.Data.Entity.ModelConfiguration.Configuration.Properties.Primitive.PrimitivePropertyConfiguration.Configure(IEnumerable`1 propertyMappings, DbProviderManifest providerManifest, Boolean allowOverride, Boolean fillFromExistingConfiguration) 
    at System.Data.Entity.ModelConfiguration.Configuration.Types.StructuralTypeConfiguration.ConfigurePropertyMappings(IList`1 propertyMappings, DbProviderManifest providerManifest, Boolean allowOverride) 
    at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.ConfigurePropertyMappings(DbDatabaseMapping databaseMapping, EntityType entityType, DbProviderManifest providerManifest, Boolean allowOverride) 
    at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.Configure(EntityType entityType, DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) 
    at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.ConfigureEntityTypes(DbDatabaseMapping databaseMapping, ICollection`1 entitySets, DbProviderManifest providerManifest) 
    at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.Configure(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) 
    at System.Data.Entity.DbModelBuilder.Build(DbProviderManifest providerManifest, DbProviderInfo providerInfo) 
    at System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection) 
    at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext) 
    at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input) 
    at System.Data.Entity.Internal.LazyInternalContext.InitializeContext() 
    at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) 
    at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() 
    at System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator() 
    at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator() 
    at System.Linq.Buffer`1..ctor(IEnumerable`1 source) 
    at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) 
    at Igs.Musketeer.DbRepository.Tests.SecurityRepositoryTest..ctor() in C:\Users\me\Source\Repos\Musketeer\Igs.Musketeer.DbRepositoryTests\SecurityRepositoryTest.cs:line 21

来源

2017-05-10 JonathanPeel

你能在这里发表的异常堆栈跟踪？我怀疑这个异常是在框架方法中引发的。 –

添加了堆栈跟踪。 – JonathanPeel

问题似乎是以'MusketeerDbContext'配置的方式，你可以发布该类的定义吗？ –

我只是有这个问题，我发现这个问题是我是用ColumnType数据注解。即使当我更改为使用HasColumnType的模型生成器约定时，我仍然得到了完全相同的错误。我猜你的一个实体有这个数据注释（或约定）？

如果是这种情况，最简单的解决方法是删除数据注释。如果不行的话，我在DbContext上创建了一个虚拟属性（例如public virtual bool IsInMemoryContext { get; } = false;），我在测试中覆盖了这个属性 - public override bool IsInMemoryContext { get; } = true;和OnModelCreating方法，我在添加列类型之前检查了是否设置了此属性。在错误

if (!IsInMemoryContext) 
{ 
    modelBuilder.Entity<AuditLog>() 
     .Property(e => e.EventType) 
     .HasColumnType("char"); 
}

更多信息可以在这里找到：GitHub issue with Effort

来源

2017-10-17 14:21:11 Balah

Effort（EF单元测试）给出错误

回答

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