JtaTransactionManager ptm = newJtaTransactionManager(ut);
assertFalse(TransactionSynchronizationManager.isSynchronizationActive());
TransactionStatus status = ptm.getTransaction(new DefaultTransactionDefinition());
assertTrue(TransactionSynchronizationManager.isSynchronizationActive());
// first rollback
ptm.rollback(status);
assertFalse(TransactionSynchronizationManager.isSynchronizationActive());
try {
// second rollback attempt
ptm.rollback(status);
fail("Should have thrown IllegalTransactionStateException");