Cover trait in FixedClockTest

Author: dbellettini

tests/Clock/FixedClockTest.php

@@ -4,11 +4,18 @@
 
 namespace Clock;
 
+use Recruiter\DateTime\UTCDateTime;
 use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\UsesClass;
 use PHPUnit\Framework\TestCase;
 use Recruiter\Clock\FixedClock;
+use Recruiter\Clock\PsrMicrotimeClock;
+use Recruiter\Clock\PsrUTCClock;
 
 #[CoversClass(FixedClock::class)]
+#[UsesClass(PsrMicrotimeClock::class)]
+#[UsesClass(PsrUTCClock::class)]
+#[UsesClass(UTCDateTime::class)]
 class FixedClockTest extends TestCase
 {
     public function testItReturnsFixedTime(): void
@@ -57,4 +64,28 @@ public function testFromIso8601(): void
             'Clock should return the fixed time from ISO 8601 string',
         );
     }
+
+    public function testConversionToMicrotime(): void
+    {
+        $fixedTime = new \DateTimeImmutable('2023-10-01 12:00:00.123456');
+        $clock = new FixedClock($fixedTime)->asMicrotime();
+
+        $this->assertEquals(
+            1696161600.123456,
+            $clock->current(),
+            'Clock should convert fixed time to microtime correctly',
+        );
+    }
+
+    public function testConversionToUTC(): void
+    {
+        $fixedTime = new \DateTimeImmutable('2023-10-01 12:00:00', new \DateTimeZone('Europe/Berlin'));
+        $clock = new FixedClock($fixedTime)->asUTC();
+
+        $this->assertEquals(
+            UTCDateTime::fromString('2023-10-01 10:00:00'),
+            $clock->current(),
+            'Clock should convert fixed time to UTC correctly',
+        );
+    }
 }