Method ScanBatchesAsync

cpp/src/arrow/dataset/file_test.cc:110–119

  MockFileFormat() : FileFormat(/*default_fragment_scan_options=*/nullptr) {}

  Result<RecordBatchGenerator> ScanBatchesAsync(
      const std::shared_ptr<ScanOptions>& options,
      const std::shared_ptr<FileFragment>& file) const override {
    auto sch = schema({field("i32", int32())});
    RecordBatchVector batches;
    for (int i = 0; i < kNumBatches; i++) {
      batches.push_back(ConstantArrayGenerator::Zeroes(kRowsPerBatch, sch));
    }
    return MakeVectorGenerator(std::move(batches));
  }

 protected:
  std::string type_name() const override { return "mock"; }