@Test
  public void testGetGlobalTransaction() throws Exception {
    utx.begin();
    Thread thread = Thread.currentThread();
    Transaction txn = (Transaction) tm.getTransactionMap().get(thread);
    GlobalTransaction gTxn1 = (GlobalTransaction) tm.getGlobalTransactionMap().get(txn);
    GlobalTransaction gTxn2 = tm.getGlobalTransaction();
    assertTrue("Get Global Transaction not returning the correct global transaction",
        gTxn1 == gTxn2);
    utx.commit();
  }
Test TransactionManagerImpl methods not tested by UserTransactionImplTest
geode-core/src/integrationTest/java/org/apache/geode/internal/jta/TransactionManagerImplJUnitTest.java