assertEquals(0, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());

    Object key = new Object();
    assertSame(key, cache.get(key));
    stats = cache.stats();
    assertEquals(1, stats.missCount());
    assertEquals(1, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());

    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());

    Object one = new Object();
    Object two = new Object();

    assertNull(cache.getIfPresent(one));
    stats = cache.stats();
    assertEquals(1, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());

   * on calls to {@code getIfPresent}.
   */
  public long loadExceptionCount() {
    return loadExceptionCount;
  }

  /**
   * Returns the ratio of cache loading attempts which threw exceptions. This is defined as {@code
   * loadExceptionCount / (loadSuccessCount + loadExceptionCount)}, or {@code 0.0} when {@code
   * loadSuccessCount + loadExceptionCount == 0}.
   *

   * on calls to {@code getIfPresent}.
   */
  public long loadExceptionCount() {
    return loadExceptionCount;
  }

  /**
   * Returns the ratio of cache loading attempts which threw exceptions. This is defined as {@code
   * loadExceptionCount / (loadSuccessCount + loadExceptionCount)}, or {@code 0.0} when {@code
   * loadSuccessCount + loadExceptionCount == 0}.
   *

    public void incrementBy(StatsCounter other) {
      CacheStats otherStats = other.snapshot();
      hitCount.add(otherStats.hitCount());
      missCount.add(otherStats.missCount());
      loadSuccessCount.add(otherStats.loadSuccessCount());
      loadExceptionCount.add(otherStats.loadExceptionCount());
      totalLoadTime.add(otherStats.totalLoadTime());
      evictionCount.add(otherStats.evictionCount());
    }
  }

    assertEquals(0, stats.hitCount());
    assertThat(stats.hitRate()).isEqualTo(1.0);
    assertEquals(0, stats.missCount());
    assertThat(stats.missRate()).isEqualTo(0.0);
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertThat(stats.loadExceptionRate()).isEqualTo(0.0);
    assertEquals(0, stats.loadCount());
    assertEquals(0, stats.totalLoadTime());

    public void incrementBy(StatsCounter other) {
      CacheStats otherStats = other.snapshot();
      hitCount.add(otherStats.hitCount());
      missCount.add(otherStats.missCount());
      loadSuccessCount.add(otherStats.loadSuccessCount());
      loadExceptionCount.add(otherStats.loadExceptionCount());
      totalLoadTime.add(otherStats.totalLoadTime());
      evictionCount.add(otherStats.evictionCount());
    }
  }

    }

    CacheStats stats = cache.stats();
    assertEquals(removalListener.size(), stats.evictionCount());
    assertEquals(computeCount.get(), stats.loadSuccessCount());
    assertEquals(exceptionCount.get() + computeNullCount.get(), stats.loadExceptionCount());
    // each computed value is still in the cache, or was passed to the removal listener