Method AddBatch

cpp/src/arrow/dataset/scanner_test.cc:402–405

  }

  void AddBatch(std::shared_ptr<RecordBatch> batch) {
    active_fragment->scan_tasks_.emplace_back(std::move(batch));
    active_fragment->has_started_.push_back(false);
  }

  std::unique_ptr<MockDataset> Finish() {
    return std::make_unique<MockDataset>(std::move(dataset_schema), std::move(fragments));