osgiHelper.waitForService(TransactionManager.class.getName(), null, 5000);
CheckService cs = (CheckService) osgiHelper.getServiceObject(ref);
TransactionManager tm = (TransactionManager) osgiHelper.getServiceObject(TransactionManager.class.getName(), null);
tm.begin();
Transaction t = tm.getTransaction();
cs.doSomethingGood();
Transaction t2 = cs.getCurrentTransaction();
Assert.assertSame(t2, t);
t.commit();
Assert.assertNull(cs.getLastRolledBack());