@Test
  public void recoversFromDisk() throws Exception {
    createPartitionedRegion(0, -1, 113, true);

    createData(0, 1);

    Set<Integer> vm0Buckets = getBucketList();

    getCache().close();

    createPartitionedRegion(0, -1, 113, true);

    assertThat(getBucketList()).isEqualTo(vm0Buckets);

    checkData(0, 1);

  }
A simple test case that we are actually persisting with a PR.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/persistence/PersistentPartitionedRegionWithRedundancyDUnitTest.java