assertThat(map.keys).hasLength(CompactHashing.DEFAULT_SIZE);
    assertThat(map.values).hasLength(CompactHashing.DEFAULT_SIZE);
  }

  public void testAllocArraysExpectedSize() {
    for (int i = 0; i <= CompactHashing.DEFAULT_SIZE; i++) {
      CompactHashMap<Integer, String> map = CompactHashMap.createWithExpectedSize(i);
      assertThat(map.needsAllocArrays()).isTrue();