Merge pull request #703 from Slamdunk/frozenclock_systemtimezone

`FrozenClock`: add named constructor to system clock

Author: lcobucci

src/FrozenClock.php

@@ -7,6 +7,8 @@
 use DateTimeImmutable;
 use DateTimeZone;
 
+use function date_default_timezone_get;
+
 final class FrozenClock implements Clock
 {
     public function __construct(private DateTimeImmutable $now)
@@ -18,6 +20,11 @@ public static function fromUTC(): self
         return new self(new DateTimeImmutable('now', new DateTimeZone('UTC')));
     }
 
+    public static function fromSystemTimezone(): self
+    {
+        return new self(new DateTimeImmutable('now', new DateTimeZone(date_default_timezone_get())));
+    }
+
     public function setTo(DateTimeImmutable $now): void
     {
         $this->now = $now;

test/FrozenClockTest.php

@@ -9,6 +9,8 @@
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\TestCase;
 
+use function date_default_timezone_get;
+
 #[CoversClass(FrozenClock::class)]
 final class FrozenClockTest extends TestCase
 {
@@ -71,4 +73,13 @@ public function fromUTCCreatesClockFrozenAtCurrentSystemTimeInUTC(): void
 
         self::assertSame('UTC', $now->getTimezone()->getName());
     }
+
+    #[Test]
+    public function fromSystemTimezoneCreatesAnInstanceUsingTheDefaultTimezoneInSystem(): void
+    {
+        $clock = FrozenClock::fromSystemTimezone();
+        $now   = $clock->now();
+
+        self::assertSame(date_default_timezone_get(), $now->getTimezone()->getName());
+    }
 }