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<?php
declare(strict_types=1);
namespace CondorcetPHP\Condorcet\Tests\Algo\Methods\RankedPairs;
use CondorcetPHP\Condorcet\Election;
use PHPUnit\Framework\TestCase;
class PairwiseTest extends TestCase
{
private readonly Election $election1;
protected function setUp(): void
{
$this->election1 = new Election;
$this->election1->addCandidate('A');
$this->election1->addCandidate('B');
$this->election1->addCandidate('C');
$this->election1->addVote('A>B>C');
}
public function testPairwiseOffsetGet(): void
{
$pairwise = $this->election1->getPairwise();
self::assertIsArray($pairwise[1]);
self::assertNull($pairwise[42]);
}
public function testExplicitPairwise(): void
{
self::assertSame(
[
'A' => [
'win' => [
'B' => 1,
'C' => 1,
],
'null' => [
'B' => 0,
'C' => 0,
],
'lose' => [
'B' => 0,
'C' => 0,
],
],
'B' => [
'win' => [
'A' => 0,
'C' => 1,
],
'null' => [
'A' => 0,
'C' => 0,
],
'lose' => [
'A' => 1,
'C' => 0,
],
],
'C' => [
'win' => [
'A' => 0,
'B' => 0,
],
'null' => [
'A' => 0,
'B' => 0,
],
'lose' => [
'A' => 1,
'B' => 1,
],
],
],
$this->election1->getPairwise()->getExplicitPairwise()
);
}
public function testVotesWeight(): void
{
$electionOff = new Election;
$electionOff->addCandidate('A');
$electionOff->addCandidate('B');
$electionOff->addCandidate('C');
$electionOff->addCandidate('D');
$electionOff->addVote('A>B>C=D ^3');
$electionOff->addVote('A>B>C=D ^4');
$electionOn = clone $electionOff;
$electionOn->allowsVoteWeight(true);
self::assertNotSame($electionOff->getExplicitPairwise(), $electionOn->getExplicitPairwise());
self::assertSame(
[
'A' => [
'win' => [
'B' => 7,
'C' => 7,
'D' => 7,
],
'null' => [
'B' => 0,
'C' => 0,
'D' => 0,
],
'lose' => [
'B' => 0,
'C' => 0,
'D' => 0,
],
],
'B' => [
'win' => [
'A' => 0,
'C' => 7,
'D' => 7,
],
'null' => [
'A' => 0,
'C' => 0,
'D' => 0,
],
'lose' => [
'A' => 7,
'C' => 0,
'D' => 0,
],
],
'C' => [
'win' => [
'A' => 0,
'B' => 0,
'D' => 0,
],
'null' => [
'A' => 0,
'B' => 0,
'D' => 7,
],
'lose' => [
'A' => 7,
'B' => 7,
'D' => 0,
],
],
'D' => [
'win' => [
'A' => 0,
'B' => 0,
'C' => 0,
],
'null' => [
'A' => 0,
'B' => 0,
'C' => 7,
],
'lose' => [
'A' => 7,
'B' => 7,
'C' => 0,
],
],
],
$electionOn->getPairwise()->getExplicitPairwise()
);
}
}