// Add two elements and invalidate them.
    cache.put(1, 4);
    cache.put(2, 8);

    cache.invalidateAll();

    assertEquals(2, stats[0]);
    assertEquals(2, stats[1]);
    assertEquals(4, stats[2]);
    assertEquals(3, stats[3]);
  }

  public void testPutAll() {
    Cache<Integer, Integer> cache = CacheBuilder.newBuilder().build();

	}

	ts := make(map[string]madmin.TierStats)
	dui.TierStats.populateStats(ts)

	infos := make([]madmin.TierInfo, 0, len(ts))
	for tier, stats := range ts {
		infos = append(infos, madmin.TierInfo{
			Name:  tier,
			Type:  globalTierConfigMgr.TierType(tier),
			Stats: stats,
		})
	}

	sort.Slice(infos, func(i, j int) bool {
		if infos[i].Type == "internal" {
			return true
		}

        } catch (SmbException e) {
            // Expected
        }

        stats = validator.getStats();
        assertTrue(stats.getTotalValidations() > 0);
        assertTrue(stats.getFailedValidations() > 0);
        assertTrue(stats.getFailureRate() > 0);
        assertTrue(stats.getFailureRate() <= 1.0);
    }

    @Test
    public void testBufferOverflowPrevention() throws Exception {

    @Nested
    @DisplayName("State management tests")
    class StateManagementTests {

        @Test
        @DisplayName("should correctly identify disconnected states")
        void shouldIdentifyDisconnectedStates() {
            // States: 0=not connected, 1=connecting, 2=run connected, 3=connected,
            // 4=error, 5=disconnecting, 6=disconnected/invalid
            int[] disconnectedStates = { 0, 4, 5, 6 };

    void testInitialization() {
        assertNotNull(multiChannelManager);
        MultiChannelManager.ChannelStatistics stats = multiChannelManager.getStatistics();
        assertEquals(0, stats.getActiveSessions());
        assertEquals(0, stats.getTotalChannels());
    }

    @Test
    @DisplayName("createChannelTransport should fail with null addresses")

        // this getUnchecked() call shouldn't be a cache miss; verified below
        assertEquals(entry.getValue(), cache.getUnchecked(entry.getKey()));
      }
      assertEquals(WARMUP_SIZE, cache.stats().missCount());
      checkValidState(cache);
    }
  }

  public void testPut_populated() {
    for (LoadingCache<Object, Object> cache : caches()) {
      // don't let the entries get GCed

		Avg:  a.Avg,
		Max:  a.Max,
	}
	return w
}

// QStat holds queue stats for replication
type QStat struct {
	Count float64 `json:"count"`
	Bytes float64 `json:"bytes"`
}

func (q *QStat) add(o QStat) QStat {
	return QStat{Bytes: q.Bytes + o.Bytes, Count: q.Count + o.Count}
}

// InQueueMetric holds queue stats for replication
type InQueueMetric struct {
	Curr QStat `json:"curr" msg:"cq"`

 *             missCount}.
 *       </ul>
 *   <li>When an entry is evicted from the cache, {@code evictionCount} is incremented.
 *   <li>No stats are modified when a cache entry is invalidated or manually removed.
 *   <li>No stats are modified by operations invoked on the {@linkplain Cache#asMap asMap} view of
 *       the cache.
 * </ul>
 *

	bucketReplStats := globalReplicationStats.Load().getAllLatest(dataUsageInfo.BucketsUsage)
	for _, bucket := range buckets {
		if s, ok := bucketReplStats[bucket]; ok {
			stats := s.ReplicationStats
			if stats.hasReplicationUsage() {
				for arn, stat := range stats.Stats {
					labels := []string{bucketL, bucket, targetArnL, arn}
					m.Set(bucketReplLastHrFailedBytes, float64(stat.Failed.LastHour.Bytes), labels...)

	}
	if types.Contains(madmin.MetricsRPC) {
		gr := globalGrid.Load()
		if gr == nil {
			m.Errors = append(m.Errors, fmt.Sprintf("%s: Grid not initialized", byHostName))
		} else {
			stats := gr.ConnStats()
			m.Aggregated.RPC = &stats
		}
	}
	// Add types...

	// ByHost is a shallow reference, so careful about sharing.
	m.ByHost = map[string]madmin.Metrics{byHostName: m.Aggregated}