tx.begin();
assertNotNull (tx.getTransactionId());
assertNotNull (txMnger.getTransactionContext().getTransactionId());
assertEquals (txMnger.getTransactionContext().getTransactionId(), tx.getTransactionId());
tx.rollback();
assertNull(tx.getTransactionId());
assertNull(txMnger.getTransactionContext());
// begin, commit, rollback
tx = txMnger.getNewTransaction();