@Override
  public final void preSetUp() throws Exception {
    try {
      disconnectAllFromDS();
    } finally {
      File d = new File("DynamicRegionData" + OSProcess.getId());
      d.mkdirs();
      DynamicRegionFactory.get().open(new DynamicRegionFactory.Config(d, null));
    }
  }
Test to make sure dynamic regions work

@since GemFire 4.3
geode-core/src/distributedTest/java/org/apache/geode/cache30/DynamicRegionDUnitTest.java