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<?php
declare(strict_types=1);
namespace EventSauce\EventSourcing\Time;
use DateInterval;
use DateTimeImmutable;
use DateTimeZone;
use InvalidArgumentException;
class TestClock implements Clock
{
/**
* @private
*/
const FORMAT_OF_TIME = 'Y-m-d H:i:s.uO';
private DateTimeImmutable $time;
private DateTimeZone $timeZone;
public function __construct(DateTimeZone $timeZone = null)
$this->timeZone = $timeZone ?: new DateTimeZone('UTC');
$this->tick();
}
public function tick(): void
$this->time = new DateTimeImmutable('now', $this->timeZone);
public function fixate(string $input): void
$preciseTime = sprintf('%s.000000', $input);
$dateTime = DateTimeImmutable::createFromFormat('Y-m-d H:i:s.u', $preciseTime, $this->timeZone);
if ( ! $dateTime instanceof DateTimeImmutable) {
$dateTime
DateTimeImmutable
throw new InvalidArgumentException("Invalid input for date/time fixation provided: {$input}");
$this->time = $dateTime;
public function moveForward(DateInterval $interval): void
$this->time = $this->now()->add($interval);
public function now(): DateTimeImmutable
return $this->time;
public function timeZone(): DateTimeZone
return $this->timeZone;
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EventSauce
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