oldValueRef.clear();
    assertFalse(segment.replace(key, hash, oldValue, newValue));
    assertEquals(0, segment.count);
    assertThat(segment.get(key, hash)).isNull();
  }

  public void testSegmentReplace() {
    MapMakerInternalMap<Object, Object, ?, ?> map =
        makeMap(createMapMaker().concurrencyLevel(1).weakValues());
    Segment<Object, Object, ?, ?> segment = map.segments[0];

    oldValueRef.clear();
    assertFalse(segment.replace(key, hash, oldValue, newValue));
    assertEquals(0, segment.count);
    assertThat(segment.get(key, hash)).isNull();
  }

  public void testSegmentReplace() {
    MapMakerInternalMap<Object, Object, ?, ?> map =
        makeMap(createMapMaker().concurrencyLevel(1).weakValues());
    Segment<Object, Object, ?, ?> segment = map.segments[0];

    assertThat(segment.replace(key, hash, oldValue, newValue)).isFalse();
    assertThat(segment.count).isEqualTo(0);
    assertThat(segment.get(key, hash)).isNull();
  }

  public void testSegmentReplace() {
    LocalCache<Object, Object> map =
        makeLocalCache(createCacheBuilder().concurrencyLevel(1).expireAfterAccess(99999, SECONDS));
    Segment<Object, Object> segment = map.segments[0];

    assertThat(segment.replace(key, hash, oldValue, newValue)).isFalse();
    assertThat(segment.count).isEqualTo(0);
    assertThat(segment.get(key, hash)).isNull();
  }

  public void testSegmentReplace() {
    LocalCache<Object, Object> map =
        makeLocalCache(createCacheBuilder().concurrencyLevel(1).expireAfterAccess(99999, SECONDS));
    Segment<Object, Object> segment = map.segments[0];