How to make a Test Suite of Soap Requests?

I would like to create a Test Suite of Soap Request and compares the exact result (which is an XML) to one that I already have. I've tried to do it using soap but I can't compare the exact response.

For example, I know that my request must return:

<data>
    <name>Nick</name>
    <lastname>Warren</lastname>
 </data>

I just want to compare the response with that!