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Properly filter out duplicate voters in elections. (#6693)

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* Prevent duplicate voter

* Update primitives/npos-elections/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Kian Paimani
2020-07-21 17:33:33 +02:00
committed by GitHub
parent 3b6597e0ed
commit c9fd0c964a
3 changed files with 159 additions and 0 deletions
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substrate/primitives/npos-elections/src/tests.rs
+60
View File
@@ -588,6 +588,66 @@ fn self_votes_should_be_kept() {
);
}
#[test]
fn duplicate_target_is_ignored() {
let candidates = vec![1, 2, 3];
let voters = vec![
(10, 100, vec![1, 1, 2, 3]),
(20, 100, vec![2, 3]),
(30, 50, vec![1, 1, 2]),
];
let ElectionResult { winners, assignments } = seq_phragmen::<_, Perbill>(
2,
2,
candidates,
voters,
).unwrap();
let winners = to_without_backing(winners);
assert_eq!(winners, vec![(2), (3)]);
assert_eq!(
assignments
.into_iter()
.map(|x| (x.who, x.distribution.into_iter().map(|(w, _)| w).collect::<Vec<_>>()))
.collect::<Vec<_>>(),
vec![
(10, vec![2, 3]),
(20, vec![2, 3]),
(30, vec![2]),
],
);
}
#[test]
fn duplicate_target_is_ignored_when_winner() {
let candidates = vec![1, 2, 3];
let voters = vec![
(10, 100, vec![1, 1, 2, 3]),
(20, 100, vec![1, 2]),
];
let ElectionResult { winners, assignments } = seq_phragmen::<_, Perbill>(
2,
2,
candidates,
voters,
).unwrap();
let winners = to_without_backing(winners);
assert_eq!(winners, vec![1, 2]);
assert_eq!(
assignments
.into_iter()
.map(|x| (x.who, x.distribution.into_iter().map(|(w, _)| w).collect::<Vec<_>>()))
.collect::<Vec<_>>(),
vec![
(10, vec![1, 2]),
(20, vec![1, 2]),
],
);
}
mod assignment_convert_normalize {
use super::*;
#[test]