Method TestWrite

cpp/src/arrow/dataset/test_util_internal.h:618–623

    return written;
  }
  void TestWrite() {
    auto reader = this->GetRecordBatchReader(schema({field("f64", float64())}));
    auto source = this->GetFileSource(reader.get());
    auto written = this->WriteToBuffer(reader->schema());
    AssertBufferEqual(*written, *source->buffer());
  }
  void TestCountRows() {
    auto options = std::make_shared<ScanOptions>();
    auto reader = this->GetRecordBatchReader(schema({field("f64", float64())}));