assertEquals(String[].class, array.getClass());
    assertThat(array).hasLength(2);
    assertNull(array[0]);
  }

  public void testNewArray_fromArray_OfArray() {
    String[][] array = ObjectArrays.newArray(new String[0][0], 1);
    assertEquals(String[][].class, array.getClass());
    assertThat(array).hasLength(1);
    assertNull(array[0]);
  }

  @GwtIncompatible // ObjectArrays.concat(Object[], Object[], Class)

    assertEquals(String[].class, array.getClass());
    assertThat(array).hasLength(2);
    assertNull(array[0]);
  }

  public void testNewArray_fromArray_OfArray() {
    String[][] array = ObjectArrays.newArray(new String[0][0], 1);
    assertEquals(String[][].class, array.getClass());
    assertThat(array).hasLength(1);
    assertNull(array[0]);
  }

  @GwtIncompatible // ObjectArrays.concat(Object[], Object[], Class)

    assertThat(set.needsAllocArrays()).isTrue();
    assertThat(set.elements).isNull();

    set.add(1);
    assertThat(set.needsAllocArrays()).isFalse();
    assertThat(set.elements).hasLength(CompactHashing.DEFAULT_SIZE);
  }

  public void testAllocArraysExpectedSize() {
    for (int i = 0; i <= CompactHashing.DEFAULT_SIZE; i++) {
      CompactHashSet<Integer> set = CompactHashSet.createWithExpectedSize(i);

    assertThat(set.needsAllocArrays()).isTrue();
    assertThat(set.elements).isNull();

    set.add(1);
    assertThat(set.needsAllocArrays()).isFalse();
    assertThat(set.elements).hasLength(CompactHashing.DEFAULT_SIZE);
  }

  public void testAllocArraysExpectedSize() {
    for (int i = 0; i <= CompactHashing.DEFAULT_SIZE; i++) {
      CompactHashSet<Integer> set = CompactHashSet.createWithExpectedSize(i);

    LoadingCache<?, ?> cache = CacheBuilder.newBuilder().initialCapacity(5).build(identityLoader());
    LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);

    assertThat(map.segments).hasLength(4);
    assertEquals(2, map.segments[0].table.length());
    assertEquals(2, map.segments[1].table.length());
    assertEquals(2, map.segments[2].table.length());
    assertEquals(2, map.segments[3].table.length());
  }

    LoadingCache<?, ?> cache = CacheBuilder.newBuilder().initialCapacity(5).build(identityLoader());
    LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);

    assertThat(map.segments).hasLength(4);
    assertEquals(2, map.segments[0].table.length());
    assertEquals(2, map.segments[1].table.length());
    assertEquals(2, map.segments[2].table.length());
    assertEquals(2, map.segments[3].table.length());
  }

    Constructor<WithConstructorAndTypeParameter> constructor = type.getDeclaredConstructor();
    Invokable<?, ?> factory = Invokable.from(constructor);
    assertThat(factory.getTypeParameters()).hasLength(2);
    assertEquals(type.getTypeParameters()[0], factory.getTypeParameters()[0]);
    assertEquals(constructor.getTypeParameters()[0], factory.getTypeParameters()[1]);

    Constructor<WithConstructorAndTypeParameter> constructor = type.getDeclaredConstructor();
    Invokable<?, ?> factory = Invokable.from(constructor);
    assertThat(factory.getTypeParameters()).hasLength(2);
    assertEquals(type.getTypeParameters()[0], factory.getTypeParameters()[0]);
    assertEquals(constructor.getTypeParameters()[0], factory.getTypeParameters()[1]);

        count,
        n -> {
          cache.asMap().computeIfPresent(key, (k, v) -> v + delimiter + n);
        });
    assertEquals(1, cache.size());
    assertThat(cache.getIfPresent(key).split(delimiter)).hasLength(count + 1);
  }

  public void testComputeIfPresentRemove() {
    List<RemovalNotification<Integer, Integer>> notifications = new ArrayList<>();
    Cache<Integer, Integer> cache =
        CacheBuilder.newBuilder()

    assertThat(map.entryHelper)
        .isInstanceOf(MapMakerInternalMap.StrongKeyStrongValueEntry.Helper.class);

    assertEquals(4, map.concurrencyLevel);

    // concurrency level
    assertThat(map.segments).hasLength(4);
    // initial capacity / concurrency level
    assertEquals(16 / map.segments.length, map.segments[0].table.length());
  }

  public void testSetKeyEquivalence() {
    Equivalence<Object> testEquivalence =