// get mapper
Mapper mapper = getMapper(new String[] { "mapping-interface.xml" });
// do mapping
UserGroupPrime userGroupPrime = mapper.map(userGroup, UserGroupPrime.class);
// check mapped group
assertNotNull(userGroupPrime);
assertEquals(userGroup.getName(), userGroupPrime.getName());
// check mapped collection
assertEquals("Two users in mapped usergroup expected.", 2, userGroupPrime.getUsers().size());
}