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我创建了一个包含单元项目的 Asp.net Telerik MVC 4 应用程序。当我尝试在单元测试中初始化用户对象时，它失败了。它给出了一条错误消息，指出配置文件中不存在连接字符串。但是，我检查了配置文件，并且连接字符串在那里。

以下是一些示例代码：

//连接字符串

  <connectionStrings>
    <add name="KMSSEntities" connectionString="metadata=res://*/Models.KMSSEntityModel.csdl|res://*/Models.KMSSEntityModel.ssdl|res://*/Models.KMSSEntityModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=(local);initial catalog=KMSS;persist security info=True;user id=******;password=*******;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
  </connectionStrings>

//Initialize my Context
 private KMSSEntities entity = new KMSSEntities();

 //This is my insert user
 public void InsertUser(User user)
        {
            entity.Users.Add(user);
        } 

//this is code in the test method

    User u = new User();
                u.UserName = "test";
                u.password = "Password";
                u.FirstName = "first";
                u.LastName = "Last";

                StudentRepository rep = new StudentRepository(new KMSSEntities());
                rep.InsertUser(u);  **//This is where it's returning the error message**
                rep.Save();

//这是堆栈跟踪。

 at System.Data.Entity.Internal.LazyInternalConnection.get_ConnectionHasModel()
   at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
   at System.Data.Entity.Internal.InternalContext.Initialize()
   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.get_InternalContext()
   at System.Data.Entity.Internal.Linq.InternalSet`1.ActOnSet(Action action, EntityState newState, Object entity, String methodName)
   at System.Data.Entity.Internal.Linq.InternalSet`1.Add(Object entity)
   at System.Data.Entity.DbSet`1.Add(TEntity entity)
   at KMSS.Models.UserRepository.InsertUser(User user) in c:\com\KMSS\KMSS\KMSS\Models\UserRepository.cs:line 29
   at KMSSTests.UnitTest1.TestMethod1() in c:\com\KMSS\KMSS\KMSSTests\UnitTest1.cs:line 21
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