{
Location l = newLocation();
InjectMessagesWorker w = new InjectMessagesWorker();
IComponentSpecification spec = newSpec(l);
ComponentMessagesSource source = newSource();
MockControl control = newControl(EnhancementOperation.class);
EnhancementOperation op = (EnhancementOperation) control.getMock();
op.claimReadonlyProperty(w.MESSAGES_PROPERTY);