Function MakeRandomMapArray

cpp/src/arrow/ipc/test_common.cc:217–232

}

Status MakeRandomMapArray(const std::shared_ptr<Array>& key_array,
                          const std::shared_ptr<Array>& item_array, int num_maps,
                          bool include_nulls, MemoryPool* pool,
                          std::shared_ptr<Array>* out) {
  auto pair_type = struct_(
      {field("key", key_array->type(), false), field("value", item_array->type())});

  auto pair_array = std::make_shared<StructArray>(pair_type, key_array->length(),
                                                  ArrayVector{key_array, item_array});

  RETURN_NOT_OK(MakeRandomListArray(pair_array, num_maps, include_nulls, pool, out));
  auto map_data = (*out)->data();
  map_data->type = map(key_array->type(), item_array->type());
  out->reset(new MapArray(map_data));
  return (**out).Validate();
}

}  // namespace