PartitionedRegionRedundancyTracker { synchronized void decrementNoCopiesBucketCount() { if (noCopiesBuckets == 0) { return; } noCopiesBuckets--; stats.incNoCopiesBucketCount(-1); if (noCopiesBuckets == 0) { lowestBucketCopies = 1; } } PartitionedRegionRedundancyTracker(int totalBuckets, int redundantCopies,
      PartitionedRegionStats stats, String regionPath); int getActualRedundancy();  }
@Test public void willNotDecrementNoCopiesBucketCountBelowZero() { redundancyTracker.decrementNoCopiesBucketCount(); verify(stats, times(0)).incNoCopiesBucketCount(-1); }