Method generate_unpacked_bitmap

cpp/src/arrow/util/bit_util_test.cc:219–229

  }

  static UnpackedBitmapType generate_unpacked_bitmap(PackedBitmapType bitmap) {
    // Use a BitmapReader (tested earlier) to populate the expected
    // unpacked bitmap.
    UnpackedBitmapType result;
    internal::BitmapReader reader(bitmap.data(), 0, 8 * kBitmapSizeInBytes);
    for (int64_t index = 0; index < 8 * kBitmapSizeInBytes; ++index) {
      result[index] = reader.IsSet();
      reader.Next();
    }
    return result;
  }

  // A pre-defined packed bitmap for use in test cases.
  const PackedBitmapType packed_bitmap_;