private CloseableReference<Integer> newReference(int size) {
    return CloseableReference.of(size, mReleaser);
  }
This test checks edge cases, when trying to increase/decrease the LFU cache fraction to more
than 1/less than 0 (of the cache size). The expected behaviour is not to update the LFU
fraction.
imagepipeline-base/src/test/java/com/facebook/imagepipeline/cache/AbstractAdaptiveCountingMemoryCacheTest.java