Method expected_values

cpp/src/parquet/column_reader_test.cc:1435–1457

Returns expected values in row range. We need this since some values are null.

  // Returns expected values in row range.
  // We need this since some values are null.
  std::vector<std::string_view> expected_values(int start, int end) {
    std::vector<std::string_view> result;
    // Find out where in the values_ vector we start from.
    size_t values_index = 0;
    for (int i = 0; i < start; ++i) {
      if (def_levels_[i] != 0) {
        ++values_index;
      }
    }

    for (int i = start; i < end; ++i) {
      if (def_levels_[i] == 0) {
        if (!read_dense_for_nullable()) {
          result.emplace_back();
        }
        continue;
      }
      result.emplace_back(reinterpret_cast<const char*>(values_[values_index].ptr),
                          FLBA_type_length_);
      ++values_index;
    }
    return result;
  }

  void CheckReadValues(int start, int end) {
    auto binary_reader = dynamic_cast<BinaryRecordReader*>(record_reader_.get());