Method SliceToChunkedArray

cpp/src/arrow/field_ref_test.cc:206–218

 private:
  static std::shared_ptr<ChunkedArray> SliceToChunkedArray(const Array& array,
                                                           int num_chunks) {
    ARROW_CHECK(num_chunks > 0 && array.length() >= num_chunks);
    ArrayVector chunks;
    chunks.reserve(num_chunks);
    for (int64_t inc = array.length() / num_chunks, beg = 0,
                 end = inc + array.length() % num_chunks;
         end <= array.length(); beg = end, end += inc) {
      chunks.push_back(array.SliceSafe(beg, end - beg).ValueOrDie());
    }
    ARROW_CHECK_EQ(static_cast<int>(chunks.size()), num_chunks);
    return ChunkedArray::Make(std::move(chunks)).ValueOrDie();
  }
};

class FieldPathTestFixture : public ::testing::Test {