Web Service Test Framework using C#

Question

 I am looking for some expert help on approach.

These are web services hosted on windows service, and different service classes implemented

My Current Production code consists of Different c# class Libraries, which have different classes written for
ClassLib1
  Class1.1
  Methods 
  Class1.2 
  Methods 
ClassLib2
  Class2.1
  Class2.2
ClassLib3
  Class3.1
  Class3.2
I have 6 different web services, and window services calls them and they ran during different schedule time. Currently I am building a unit test framework, where with web references I am calling those methods and verifying them.
Ask: What I am looking for a robust framework approach, where I can integrate these Jobs, framework should be flexible and should accommodate new classes/jobs/services, whenever they get added.