<?php

declare(strict_types=1);

namespace App\Tests\Unit;

use App\Clock;
use PHPUnit\Framework\TestCase;

final class ClockTest extends TestCase
{
    public function testNowReturnsDateTimeImmutable(): void
    {
        $clock = new Clock();
        $before = new \DateTimeImmutable();
        $now = $clock->now();
        $after = new \DateTimeImmutable();

        self::assertInstanceOf(\DateTimeImmutable::class, $now);
        self::assertGreaterThanOrEqual($before->getTimestamp(), $now->getTimestamp());
        self::assertLessThanOrEqual($after->getTimestamp(), $now->getTimestamp());
    }
}