ExcPeerReviewTest.php

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<?php

use PHPUnit\Framework\TestCase;

class ExcPeerReviewTest extends TestCase
{
    protected function tearDown(): void
    {
    }

    protected function getDistribution($user_ids, $num_assignments): \ILIAS\Exercise\PeerReview\ExcPeerReviewDistribution
    {
        return new \ILIAS\Exercise\PeerReview\ExcPeerReviewDistribution($user_ids, $num_assignments);
    }

    public function testDistributionNumberOfPeers(): void
    {
        $user_ids = [100,200,300,400,500];
        $num_assignments = 3;

        $distribution = $this->getDistribution($user_ids, $num_assignments);

        foreach ($user_ids as $user_id) {
            $this->assertEquals(count($distribution->getPeersOfRater($user_id)), $num_assignments);
        }
    }

    public function testDistributionNumberOfRaters(): void
    {
        $user_ids = [10,20,30,40,50];
        $num_assignments = 4;

        $distribution = $this->getDistribution($user_ids, $num_assignments);

        $peer_raters = [];
        foreach ($user_ids as $user_id) {
            foreach ($distribution->getPeersOfRater($user_id) as $peer) {
                $peer_raters[$peer][$user_id] = $user_id;
            }
        }

        $this->assertSameSize($peer_raters, $user_ids);

        foreach ($peer_raters as $raters) {
            $this->assertEquals(count($raters), $num_assignments);
        }
    }

    public function testDistributionNoSelfAssignment(): void
    {
        $user_ids = [10,20,30,40,50];
        $num_assignments = 4;

        $distribution = $this->getDistribution($user_ids, $num_assignments);

        foreach ($user_ids as $user_id) {
            foreach ($distribution->getPeersOfRater($user_id) as $peer) {
                $this->assertNotEquals($user_id, $peer);
            }
        }
    }
}