125 lines
4.2 KiB
Rust
125 lines
4.2 KiB
Rust
/* 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::{CandidateState, CountState, Election};
|
||
use opentally::numbers::{Fixed, NativeFloat64, Number};
|
||
use opentally::stv;
|
||
|
||
use std::io::{self, BufRead};
|
||
use std::fs::File;
|
||
|
||
// Compare ers97.blt count with result produced by 1987 Hill–Wichmann–Woodall reference implementation
|
||
#[test]
|
||
fn meek87_ers97_float64() {
|
||
let stv_opts = stv::STVOptions {
|
||
round_tvs: None,
|
||
round_weights: None,
|
||
round_votes: None,
|
||
round_quota: None,
|
||
sum_surplus_transfers: stv::SumSurplusTransfersMode::SingleStep,
|
||
meek_surplus_tolerance: String::from("0.001%"),
|
||
normalise_ballots: false,
|
||
quota: stv::QuotaType::DroopExact,
|
||
quota_criterion: stv::QuotaCriterion::GreaterOrEqual,
|
||
quota_mode: stv::QuotaMode::Static,
|
||
ties: vec![],
|
||
surplus: stv::SurplusMethod::Meek,
|
||
surplus_order: stv::SurplusOrder::BySize,
|
||
transferable_only: false,
|
||
exclusion: stv::ExclusionMethod::SingleStage,
|
||
bulk_exclude: false,
|
||
defer_surpluses: false,
|
||
meek_immediate_elect: false,
|
||
pp_decimals: 2,
|
||
};
|
||
utils::read_validate_election::<NativeFloat64>("tests/data/ers97_meek.csv", "tests/data/ers97.blt", stv_opts, Some(2), &["exhausted", "quota"]);
|
||
}
|
||
|
||
// Compare ers97.blt count with result produced by OpenSTV "Meek STV"
|
||
#[test]
|
||
fn meek06_ers97_fixed12() {
|
||
let stv_opts = stv::STVOptions {
|
||
round_tvs: Some(9),
|
||
round_weights: Some(9),
|
||
round_votes: Some(9),
|
||
round_quota: Some(9),
|
||
sum_surplus_transfers: stv::SumSurplusTransfersMode::SingleStep,
|
||
meek_surplus_tolerance: String::from("0.0001"),
|
||
normalise_ballots: false,
|
||
quota: stv::QuotaType::Droop,
|
||
quota_criterion: stv::QuotaCriterion::GreaterOrEqual,
|
||
quota_mode: stv::QuotaMode::Static,
|
||
ties: vec![],
|
||
surplus: stv::SurplusMethod::Meek,
|
||
surplus_order: stv::SurplusOrder::BySize,
|
||
transferable_only: false,
|
||
exclusion: stv::ExclusionMethod::SingleStage,
|
||
bulk_exclude: false,
|
||
defer_surpluses: true,
|
||
meek_immediate_elect: true,
|
||
pp_decimals: 2,
|
||
};
|
||
Fixed::set_dps(12);
|
||
|
||
// Read BLT
|
||
let file = File::open("tests/data/ers97.blt").expect("IO Error");
|
||
let file_reader = io::BufReader::new(file);
|
||
let lines = file_reader.lines();
|
||
|
||
let election: Election<Fixed> = Election::from_blt(lines.map(|r| r.expect("IO Error").to_string()).into_iter());
|
||
|
||
// Initialise count state
|
||
let mut state = CountState::new(&election);
|
||
|
||
// Count to completion
|
||
stv::count_init(&mut state, &stv_opts);
|
||
while !stv::count_one_stage(&mut state, &stv_opts).unwrap() {}
|
||
|
||
// Check states and keep values
|
||
for (candidate, count_card) in state.candidates.iter() {
|
||
match candidate.name.as_str() {
|
||
"Smith" => {
|
||
assert!(count_card.state == CandidateState::Elected);
|
||
assert_eq!(count_card.keep_value, Some(Fixed::parse("0.452239778")));
|
||
}
|
||
"Carpenter" => {
|
||
assert!(count_card.state == CandidateState::Elected);
|
||
assert_eq!(count_card.keep_value, Some(Fixed::parse("0.614726576")));
|
||
}
|
||
"Duke" => {
|
||
assert!(count_card.state == CandidateState::Elected);
|
||
assert_eq!(count_card.keep_value, Some(Fixed::parse("0.610901635")));
|
||
}
|
||
"Prince" => {
|
||
assert!(count_card.state == CandidateState::Elected);
|
||
assert_eq!(count_card.keep_value, Some(Fixed::parse("0.741971929")));
|
||
}
|
||
"Freeman" => {
|
||
assert!(count_card.state == CandidateState::Elected);
|
||
assert_eq!(count_card.keep_value, Some(Fixed::parse("0.715546058")));
|
||
}
|
||
"Vicar" => {
|
||
assert!(count_card.state == CandidateState::Elected);
|
||
assert_eq!(count_card.keep_value, Some(Fixed::parse("1.0")));
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
}
|