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include/condorcet/Benchmarks/PairwiseNumberOfCandidatesBench.php

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+<?php
+
+declare(strict_types=1);
+
+namespace CondorcetPHP\Condorcet\Benchmarks;
+
+use CondorcetPHP\Condorcet\Algo\Methods\RankedPairs\RankedPairs_Core;
+use CondorcetPHP\Condorcet\Election;
+use PhpBench\Attributes as Bench;
+
+ini_set('memory_limit', '51200M');
+
+class PairwiseNumberOfCandidatesBench
+{
+    public array $numberOfCandidates = [3, 5, 7, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100];
+    public array $numberOfVotes = [10, 100, 1000, 10000];
+
+
+    protected Election $election;
+
+    public function __construct()
+    {
+        RankedPairs_Core::$MaxCandidates = null;
+    }
+
+
+    protected function buildElection(int $numberOfCandidates, int $numberOfVotes): void
+    {
+        $randomizer = new \Random\Randomizer(new \Random\Engine\Xoshiro256StarStar('CondorcetReproductibleRandomSeed'));
+
+        $this->election = $election = new Election;
+        $this->election->setNumberOfSeats((int) ($numberOfCandidates / 3));
+
+        $candidates = [];
+
+        for ($i=0; $i < $numberOfCandidates; $i++) {
+            $candidates[] = $election->addCandidate();
+        }
+
+        for ($i = 0; $i < $numberOfVotes; $i++) {
+            $oneVote = $randomizer->shuffleArray($candidates);
+            $election->addVote($oneVote);
+        }
+    }
+
+    public function provideNumberOfCandidates(): \Generator
+    {
+        foreach ($this->numberOfCandidates as $n) {
+            yield $n => ['numberOfCandidates' => $n];
+        }
+    }
+
+    public function provideNumberOfVotes(): \Generator
+    {
+        foreach ($this->numberOfVotes as $n) {
+            yield $n => ['numberOfVotes' => $n];
+        }
+    }
+
+    #[Bench\OutputTimeUnit('seconds')]
+    #[Bench\ParamProviders(['provideNumberOfCandidates', 'provideNumberOfVotes'])]
+    #[Bench\Warmup(0)]
+    #[Bench\Iterations(1)]
+    #[Bench\Revs(1)]
+    public function benchByCandidates(array $params): void
+    {
+        $this->buildElection($params['numberOfCandidates'], $params['numberOfVotes']);
+    }
+}