[英]How to Stub a ReadOnly property of a concrete class
Let's say I have a Concrete class with a Read-Only property eg假设我有一个具有只读属性的混凝土 class 例如
public class TestClass
{
public bool Squid {get;private set;}
}
And now I want to stub the response to Squid eg现在我想存根对 Squid 的响应,例如
Squid squid = MockRepository.GenerateStub<Squid>();
squid.Stub(c => c.Squid).Return(true);
However when I run this I get the following error message: System.InvalidOperationException: Invalid call, the last call has been used or no call has been made (make sure that you are calling a virtual (C#) / Overridable (VB) method).但是,当我运行它时,我收到以下错误消息: System.InvalidOperationException: Invalid call, last call has been used or no call has been made (确保您正在调用虚拟 (C#) / Overridable (VB) 方法) .
Is there any way of stubbing this property without creating an interface for the class?有没有办法在不为 class 创建接口的情况下对这个属性进行存根?
Yes, there is: Make the property virtual
as already described in the exception message.是的,有:如异常消息中所述,使属性为
virtual
。
You could use reflection to call the private setter.您可以使用反射来调用私有设置器。
Or use reflection to find the backing field and set it directly(A bit harder, but works on non auto-properties with a trivial getter).或者使用反射来查找支持字段并直接设置它(有点困难,但适用于具有微不足道的 getter 的非自动属性)。
And finally it's possible to use the profiling API for that.最后,可以为此使用分析 API。 (AFAIK
Moles
is based on that). (AFAIK
Moles
就是基于此)。
If any of that is a good idea is a different question...如果其中任何一个是一个好主意是一个不同的问题......
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