Method ToString

cpp/src/arrow/dataset/test_util_internal.h:411–417

  int64_t expected_rows() const { return num_batches * items_per_batch; }

  std::string ToString() const {
    // GTest requires this to be alphanumeric
    std::stringstream ss;
    ss << (use_threads ? "Threaded" : "Serial") << num_batches << "b" << items_per_batch
       << "r";
    return ss.str();
  }

  static std::string ToTestNameString(
      const ::testing::TestParamInfo<TestFormatParams>& info) {