* 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}.
   *

    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
    assertEquals(computeCount.get(), cache.size() + removalListener.size());
  }

  @GwtIncompatible // NullPointerTester