feat: Serialize Enum variants with the variant name

With enum types it's almost always useful to know exactly which variant is being
logged. But the current serializers don't differentiate between enums and objects.

This changes the serializers to add the variant name of the enum that is being
serialized.

Author: blackwolf12333

src/Serializer/AbstractSerializer.php

@@ -241,6 +241,12 @@ protected function serializeValue($value)
             return $value;
         }
 
+        if ($value instanceof \UnitEnum) {
+            $reflection = new \ReflectionObject($value);
+
+            return 'Enum ' . $reflection->getName() . '::' . $value->name;
+        }
+
         if (\is_object($value)) {
             $reflection = new \ReflectionObject($value);
 

tests/Serializer/AbstractSerializerTest.php

@@ -54,6 +54,18 @@ public function testObjectsAreStrings(): void
         $this->assertSame('Object Sentry\Tests\Serializer\SerializerTestObject', $result);
     }
 
+    /**
+     * @requires PHP >= 8.1
+     */
+    public function testEnumsAreNames(): void
+    {
+        $serializer = $this->createSerializer();
+        $input = SerializerTestEnum::CASE_NAME;
+        $result = $this->invokeSerialization($serializer, $input);
+
+        $this->assertSame('Enum Sentry\Tests\Serializer\SerializerTestEnum::CASE_NAME', $result);
+    }
+
     public static function objectsWithIdPropertyDataProvider(): array
     {
         return [
@@ -651,6 +663,11 @@ public static function testy(): void
     }
 }
 
+enum SerializerTestEnum
+{
+    case CASE_NAME;
+}
+
 class SerializerTestObjectWithIdProperty extends SerializerTestObject
 {
     public $id = 'bar';