visual studio unit test for object type

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C#

C#4.0

Hello everybody,
I have developed a WCF application ,I want to do unit testing for it using visual studio
. My problem is the service method has objects like this .

public ResponseDTO GetMessagelists(RequestDTO request)

where ResponseDTO and RequestDTO are DTO consists of properties of different datatypes as well as another class object array, so how can I do the testing for service method that has request parameter as object and return type is also object .Check in internet it shows example for single data type .

Can anybody suggest some code or guide me .

Advance thanks,


Regards,
Arun