@After
  public void tearDown() throws Exception {
    try {
      transactionManager.rollback();
    } catch (IllegalStateException ignore) {
    }
    cache.close();

    ExpiryTask.permitExpiration();
  }
Tests transaction expiration functionality

@since GemFire 4.0
geode-core/src/integrationTest/java/org/apache/geode/TXExpirationIntegrationTest.java