UtcClockTest.php

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<?php

declare(strict_types=1);

namespace ILIAS\Data\Clock;

use ILIAS\Data\Clock\UtcClock;
use PHPUnit\Framework\TestCase;

class UtcClockTest extends TestCase
{
    private string $default_timezone;

    protected function setUp(): void
    {
        $this->default_timezone = date_default_timezone_get();
    }

    protected function tearDown(): void
    {
        date_default_timezone_set($this->default_timezone);
    }

    public function testUtcClockIsNotAffectedByGlobalTimezoneChanges(): void
    {
        date_default_timezone_set('Europe/Berlin');
        $clock = new UtcClock();

        self::assertSame('UTC', $clock->now()->getTimezone()->getName());
    }
}