ImmutableSet.of(
            "2001:db8::5efe:102:304",
            "2001:db8::100:5efe:102:304", // Private Multicast? Not likely.
            "2001:db8::200:5efe:102:304",
            "2001:db8::300:5efe:102:304" // Public Multicast? Also unlikely.
            );
    ImmutableSet<String> nonIsatapAddresses =
        ImmutableSet.of(
            "::1.2.3.4",
            "3ffe::1",
            "::",

        ImmutableSet.of(
            "2001:db8::5efe:102:304",
            "2001:db8::100:5efe:102:304", // Private Multicast? Not likely.
            "2001:db8::200:5efe:102:304",
            "2001:db8::300:5efe:102:304" // Public Multicast? Also unlikely.
            );
    ImmutableSet<String> nonIsatapAddresses =
        ImmutableSet.of(
            "::1.2.3.4",
            "3ffe::1",
            "::",

    assertEquals(ImmutableList.of(-1, 3, foo, bar), result);
  }

  @GwtIncompatible // slow
  public void testLeastOf_reconcileAgainstSortAndSublist() {
    runLeastOfComparison(1000, 300, 20);
  }

  public void testLeastOf_reconcileAgainstSortAndSublistSmall() {
    runLeastOfComparison(10, 30, 2);
  }

  private static void runLeastOfComparison(int iterations, int elements, int seeds) {

    assertEquals(ImmutableList.of(-1, 3, foo, bar), result);
  }

  @GwtIncompatible // slow
  public void testLeastOf_reconcileAgainstSortAndSublist() {
    runLeastOfComparison(1000, 300, 20);
  }

  public void testLeastOf_reconcileAgainstSortAndSublistSmall() {
    runLeastOfComparison(10, 30, 2);
  }

  private static void runLeastOfComparison(int iterations, int elements, int seeds) {

   */
  public void testInvalidatingRemove() {
    MinMaxPriorityQueue<Integer> mmHeap = MinMaxPriorityQueue.create();
    mmHeap.addAll(
        Lists.newArrayList(1, 20, 1000, 2, 3, 30, 40, 10, 11, 12, 13, 300, 400, 500, 600));
    assertEquals(15, mmHeap.size());
    assertTrue("Heap is not intact initially", mmHeap.isIntact());
    mmHeap.remove(12);
    assertEquals(14, mmHeap.size());

                    } catch (RuntimeException e) {
                    }
                  }
                }
              });
    }

    threadPool.shutdown();
    threadPool.awaitTermination(300, SECONDS);

    // Since we're not doing any more cache operations, and the cache only expires/evicts when doing
    // other operations, the cache and the removal queue won't change from this point on.