嘲讽WCF客户的IQueryable成员

我有一个公开接口WCF数据服务：嘲讽WCF客户的IQueryable成员

public interface IAccountService 
{ 
    IQueryable<Account> Accounts { get; } 
    IQueryable<Contract> Contracts { get; } 
} 

[DataServiceKey("ID")] 
public class Account 
{ 
    public virtual Guid ID { get; set; } 
    public virtual string AccountName { get; set; } 
    public virtual string Address1 { get; set; } 
    public virtual string Address2 { get; set; } 
    public virtual string City { get; set; } 
    public virtual string State { get; set; } 
    public virtual string Zip { get; set; } 
    public virtual string Phone { get; set; } 
    public virtual string Fax { get; set; } 
    public virtual string Status { get; set; } 
    public virtual DateTime StartDate { get; set; } 
    public virtual IEnumerable<Contract> Contracts { get; set; } 
} 

[DataServiceKey("ID")] 
public class Contract 
{ 
    public virtual Guid ID { get; set; } 
    public virtual string ContractCode { get; set; } 
    public virtual string ContractName { get; set; } 
    public virtual DateTime StartDate { get; set; } 
    public virtual int UnitQty { get; set; } 
    public virtual double UnitPrice { get; set; } 
}

我想嘲笑服务客户端进行单元测试。我想写出这样一个测试：

[Test] 
public void MockContractsFromAccount() 
{ 
    var acctSvc = new Mock<IAccountService>(); 
    var blah = new Contract[] { new Contract { ContractCode = "BLAH001", ContractName = "blah 1" }, 
     new Contract { ContractCode = "BLAH002", ContractName = "blah 2" } }; 
    var blee = new Contract[] { new Contract { ContractCode = "BLEE001", ContractName = "blee 1" } }; 
    var accts = new Account[] { new Account { AccountName = "blah", State = "WY", Contracts = new DataServiceCollection<Contract>(blah) }, 
     new Account { AccountName = "blee", State = "CO", Contracts = new DataServiceCollection<Contract>(blee) } }; 
    acctSvc.SetupGet(x => x.Accounts).Returns(accts.AsQueryable()); 

    var result = from x in acctSvc.Object.Accounts 
       where x.State == "CO" 
       select x; 
    Assert.That(result, Has.Count.EqualTo(1)); 
    Assert.That(result.First().Contracts, Has.Count.EqualTo(2)); 
    Assert.That(result, Is.All.EquivalentTo(blah)); 
}

但代码中的new DataServiceCollection<Contract>(blah)失败，出现错误消息

SomeTests.MockContractsFromAccount： System.ArgumentException：该DataServiceContext到的DataServiceCollection实例所属的可能不确定。该DataServiceContext必须要么在构造函数中的DataServiceCollection提供或用于创建化DataServiceQuery或QueryOperationResponse对象，它是项目中的DataServiceCollection

源这似乎是越来越复杂。有没有办法让Visual Studio生成帐户&合同的接口或让accts.Contracts返回IQueryable<Contract>而不是DataServiceCollection<Contract>？也许一些其他简单的解决方案来嘲笑这项服务？

为了清楚起见，svcutil.exe的是生成一个账户类，它看起来是这样的：

public class Account 
{ 
    public Guid ID { get; set; } 
    public string AccountName { get; set; } 
    public string Address1 { get; set; } 
    public string Address2 { get; set; } 
    public string City { get; set; } 
    public string State { get; set; } 
    public string Zip { get; set; } 
    public string Phone { get; set; } 
    public string Fax { get; set; } 
    public string Status { get; set; } 
    public DateTime StartDate { get; set; } 
    // It descends from IEnumerable<Contract> 
    public DataServiceCollection<Contract> Contracts { get; set; } 
}

来源

2010-11-10 kelloti

-1

由于Contracts属性是IEnumerable类型，你可以创建任何枚举集合。

所以，与其

Contracts = new DataServiceCollection<Contract>(blah)

只使用

Contracts = new [] { blah }

这将确保你会在你伪装的对象被断开。

来源

2010-11-10 23:23:12

这似乎是一个不错的主意，但在生成的代码合同属性的类型DataServicesCollection 的。如果我可以让VS生成一个IAccount接口，DataServicesCollection的确扩展IEnumerable 。我仍然没有看到让生成的代码实现接口 – kelloti 2010-11-11 15:52:43

@kelloti的方法：不，它不是。 Dmytrii不喜欢我的答案，即使他和我的答案基本相同：他们基于这样一个事实，即Contracts属性是一个“IEnumerable ”，至少是您向我们显示的代码。 – rsenna 2010-11-11 17:39:52

对于那些通过搜索引擎发现此问题的人。

要在手动创建DataServiceCollection时消除“DataServiceContext ... could not be determined”异常，请使用overloaded constructor并将TrackingMode参数设置为None。

即，

new DataServiceCollection<Contract>(blah, TrackingMode.None)

来源

2012-09-25 15:30:21

嘲讽WCF客户的IQueryable成员

回答

相关问题