final Object key = new MagicKey(cache(0), cache(1), cache(2));
//init
operation.init(cache(0), key);
final DummyTransactionManager transactionManager = (DummyTransactionManager) tm(0);
transactionManager.begin();
operation.perform(cache(0), key);
final DummyTransaction transaction = transactionManager.getTransaction();
transaction.runPrepare();
assertEquals("Wrong transaction status before killing backup owner.",
Status.STATUS_PREPARED, transaction.getStatus());