OpenTally/tests/aec.rs

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/* OpenTally: Open-source election vote counting
* Copyright © 2021 Lee Yingtong Li (RunasSudo)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
mod utils;
use opentally::election::Election;
use opentally::numbers::Rational;
use opentally::stv;
use csv::StringRecord;
use flate2::bufread::GzDecoder;
use std::fs::File;
use std::io::{self, BufRead};
#[test]
fn aec_tas19_rational() {
// Read CSV file
let reader = csv::ReaderBuilder::new()
.has_headers(false)
.from_path("tests/data/aec-senate-formalpreferences-24310-TAS.csv")
.expect("IO Error");
let records: Vec<StringRecord> = reader.into_records().map(|r| r.expect("Syntax Error")).collect();
let mut candidates: Vec<&str> = records.iter().skip(2).map(|r| &r[0]).collect();
// Remove exhausted/LBF rows
candidates.truncate(candidates.len() - 2);
// TODO: Validate candidate names
let stages: Vec<usize> = records.first().unwrap().iter().skip(1).step_by(2).map(|s| s.parse().unwrap()).collect();
// Decompress BLT
let file = File::open("tests/data/aec-senate-formalpreferences-24310-TAS.blt.gz").expect("IO Error");
let file_reader = io::BufReader::new(file);
let gz_decoder = GzDecoder::new(file_reader);
let gz_reader = io::BufReader::new(gz_decoder);
let lines = gz_reader.lines();
// Read BLT
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let election: Election<Rational> = Election::from_blt(lines.map(|r| r.expect("IO Error").to_string()).into_iter());
let stv_opts = stv::STVOptions {
round_tvs: None,
round_weights: None,
round_votes: Some(0),
round_quota: Some(0),
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quota: stv::QuotaType::Droop,
quota_criterion: stv::QuotaCriterion::GreaterOrEqual,
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surplus: stv::SurplusMethod::UIG,
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surplus_order: stv::SurplusOrder::ByOrder,
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transferable_only: false,
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exclusion: stv::ExclusionMethod::ByValue,
pp_decimals: 2,
};
utils::validate_election(stages, records, election, stv_opts);
}