assertEquals(3, multiset.count(s2));
  }

  public void testLogicalKeyEquality_strongKeys() {
    testLogicalKeyEquality(STRONG);
  }

  public void testLogicalKeyEquality_weakKeys() {
    testLogicalKeyEquality(WEAK);
  }

  private void testLogicalKeyEquality(MapMakerInternalMap.Strength keyStrength) {

    ConcurrentMap<String, AtomicInteger> map =