Function MakeDatasetFromSchema

cpp/src/arrow/dataset/scanner_test.cc:66–68

The basic evolution strategy doesn't really need any info from the dataset or the fragment other than the schema so we just make a dummy dataset/fragment here.

// or the fragment other than the schema so we just make a dummy dataset/fragment
// here.
std::unique_ptr<Dataset> MakeDatasetFromSchema(std::shared_ptr<Schema> sch) {
  return std::make_unique<InMemoryDataset>(std::move(sch), RecordBatchVector{});
}

std::unique_ptr<Fragment> MakeSomeFragment(std::shared_ptr<Schema> sch) {
  return std::make_unique<InMemoryFragment>(std::move(sch), RecordBatchVector{});