assertEquals(0L, map.get(key));
    assertTrue(map.containsKey(key));

    assertEquals(1L, map.incrementAndGet(key));
    assertEquals(1L, map.get(key));
  }

  public void testGetAndIncrement() {
    AtomicLongMap<String> map = AtomicLongMap.create();
    String key = "key";
    for (int i = 0; i < ITERATIONS; i++) {
      long before = map.get(key);
      long result = map.getAndIncrement(key);