Replace serviceImplementation in IdeaTestCase

Hi I'm trying to run a test using IdeaTestCase, and I want to use a Mock of a service I usually use.

Is there anyway to change the serviceImplemenation for a given service interface during testing (with IdeaTestCase because I want plugin.xml to load other things)?

For example I'd like to do something like :

public class SomeTest extends IdeaTestCase {
   ...


   public void testDoSomething {
     ServiceManager.replaceService(MyService.class, MyServiceTestImpl.class)


     ....
   }
}