Method GetFileSink

cpp/src/arrow/dataset/test_util_internal.h:487–491

  }

  Result<std::shared_ptr<io::BufferOutputStream>> GetFileSink() {
    ARROW_ASSIGN_OR_RAISE(std::shared_ptr<ResizableBuffer> buffer,
                          AllocateResizableBuffer(0));
    return std::make_shared<io::BufferOutputStream>(buffer);
  }

  void SetSchema(std::vector<std::shared_ptr<Field>> fields) {
    opts_->dataset_schema = schema(std::move(fields));