I am using Changeman version control tool for IMS test.
If you are testing IMS/DB programs, then give the load library of such in the JOBLIB of the test JCL.
I case if you are testing IMS/DC programs, promote Load module, DIF, DOF, MID & MOD to the test level using the promote option in changeman. This will load all your DC modules to the test region. Then you have to go to test region and test your DC screens.