assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertThat(stats.loadExceptionRate()).isEqualTo(0.0);
    assertEquals(0, stats.loadCount());
    assertEquals(0, stats.totalLoadTime());
    assertThat(stats.averageLoadPenalty()).isEqualTo(0.0);
    assertEquals(0, stats.evictionCount());
  }

  public void testSingle() {
    CacheStats stats = new CacheStats(11, 13, 17, 19, 23, 27);

    assertEquals(2, stats.missCount());
    assertThat(stats.missRate()).isEqualTo(2.0 / 3);
    assertEquals(2, stats.loadCount());
    assertTrue(stats.totalLoadTime() >= totalLoadTime);
    totalLoadTime = stats.totalLoadTime();
    assertTrue(stats.averageLoadPenalty() >= 0.0);
    assertEquals(0, stats.evictionCount());

    Object three = new Object();
    cache.getUnchecked(three);

    assertEquals(2, stats.missCount());
    assertThat(stats.missRate()).isEqualTo(2.0 / 3);
    assertEquals(2, stats.loadCount());
    assertTrue(stats.totalLoadTime() >= totalLoadTime);
    totalLoadTime = stats.totalLoadTime();
    assertTrue(stats.averageLoadPenalty() >= 0.0);
    assertEquals(0, stats.evictionCount());

    Object three = new Object();
    cache.getUnchecked(three);

    @Override
    public void recordLoadSuccess(long loadTime) {
      loadSuccessCount.increment();
      totalLoadTime.add(loadTime);
    }

    @SuppressWarnings("GoodTime") // b/122668874
    @Override
    public void recordLoadException(long loadTime) {
      loadExceptionCount.increment();
      totalLoadTime.add(loadTime);
    }

    @Override
    public void recordEviction() {

   * or {@code loadExceptionCount} is incremented.
   */
  @SuppressWarnings("GoodTime") // should return a java.time.Duration
  public long totalLoadTime() {
    return totalLoadTime;
  }

  /**
   * Returns the average time spent loading new values. This is defined as {@code totalLoadTime /
   * (loadSuccessCount + loadExceptionCount)}.
   *

   * or {@code loadExceptionCount} is incremented.
   */
  @SuppressWarnings("GoodTime") // should return a java.time.Duration
  public long totalLoadTime() {
    return totalLoadTime;
  }

  /**
   * Returns the average time spent loading new values. This is defined as {@code totalLoadTime /
   * (loadSuccessCount + loadExceptionCount)}.
   *

    @Override
    public void recordLoadSuccess(long loadTime) {
      loadSuccessCount.increment();
      totalLoadTime.add(loadTime);
    }

    @SuppressWarnings("GoodTime") // b/122668874
    @Override
    public void recordLoadException(long loadTime) {
      loadExceptionCount.increment();
      totalLoadTime.add(loadTime);
    }

    @Override
    public void recordEviction() {