@Before
  public void setUp() {
    Properties props = new Properties();
    props.setProperty(LOCATORS, "");
    props.setProperty(MCAST_PORT, "0");
    props.setProperty(ConfigurationProperties.OFF_HEAP_MEMORY_SIZE, "100m");
    gfc = (GemFireCacheImpl) new CacheFactory(props).create();
  }
Test off-heap regions with indexes.
geode-core/src/integrationTest/java/org/apache/geode/internal/offheap/OffHeapIndexJUnitTest.java