Function temp_data_dir

cpp/src/parquet/encryption/test_encryption_util.h:60–62

extern std::unique_ptr<TemporaryDir> temp_dir;

inline ::arrow::Result<std::unique_ptr<TemporaryDir>> temp_data_dir() {
  return TemporaryDir::Make("parquet-encryption-test-");
}

const char kDoubleFieldName[] = "double_field";
const char kFloatFieldName[] = "float_field";