Function MakeRandomData

cpp/src/arrow/util/compression_test.cc:41–45

namespace util {

std::vector<uint8_t> MakeRandomData(int data_size) {
  std::vector<uint8_t> data(data_size);
  random_bytes(data_size, 1234, data.data());
  return data;
}

std::vector<uint8_t> MakeCompressibleData(int data_size) {
  std::string base_data =