public void testTwoPhaseCommit4Resources() throws Exception {
tm.begin();
Transaction tx = tm.getTransaction();
tx.enlistResource(mr11);
tx.delistResource(mr11, XAResource.TMSUSPEND);
tx.enlistResource(mr12);
tx.delistResource(mr12, XAResource.TMSUSPEND);
tx.enlistResource(mr21);
tx.delistResource(mr21, XAResource.TMSUSPEND);
tx.enlistResource(mr22);
tx.delistResource(mr22, XAResource.TMSUSPEND);