Slave Rift

<?phpnamespace App\Tests;use App\Game\RhythmClock;use PHPUnit\Framework\TestCase;final class RhythmClockTest extends TestCase{    public function testTempoFollowsXpLevelWithoutWaveState(): void    {        $clock = new RhythmClock();        self::assertSame(116.0, $clock->bpm(1));        self::assertSame(122.0, $clock->bpm(4));        self::assertSame(130.0, $clock->bpm(8));        self::assertSame(146.0, $clock->bpm(16));    }    public function testSixteenthPhaseSurvivesLevelChange(): void    {        $clock = new RhythmClock();        $firstBeat = [];        for ($i = 0; $i < 40 && count($firstBeat) < 4; $i++) {            $firstBeat = array_merge($firstBeat, $clock->advance(1.0 / 60.0, 1));        }        self::assertSame([0, 1, 2, 3], $firstBeat);        self::assertSame($firstBeat, $clock->drain());        self::assertSame([], $clock->drain());        $next = [];        for ($i = 0; $i < 12 && $next === []; $i++) {            $next = $clock->advance(1.0 / 60.0, 4);        }        self::assertSame([4], $next, 'Changing level must change tempo, not restart the bar.');    }}