@Before
  public void setUp() throws Exception {
    // Connect to a DS and create a Cache.
    sys = DistributedSystem.connect(getDistributedSystemProperties());
    cache = CacheFactory.create(sys);
  }
Tests memory allocation operations on a PartitionedRegion on a single node.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/PRDataStoreMemoryJUnitTest.java