it.next();
      it.remove();
    }
    segment.evictEntries(entry);
    assertEquals(maxSize, map.size());
    assertEquals(originalMap, map);
  }

  // reference queues

  public void testDrainKeyReferenceQueueOnWrite() {
    for (CacheBuilder<Object, Object> builder : allKeyValueStrengthMakers()) {
      LocalCache<Object, Object> map = makeLocalCache(builder.concurrencyLevel(1));

      it.next();
      it.remove();
    }
    segment.evictEntries(entry);
    assertEquals(maxSize, map.size());
    assertEquals(originalMap, map);
  }

  // reference queues

  public void testDrainKeyReferenceQueueOnWrite() {
    for (CacheBuilder<Object, Object> builder : allKeyValueStrengthMakers()) {
      LocalCache<Object, Object> map = makeLocalCache(builder.concurrencyLevel(1));