feat(object-mapper): Honor the output class in ObjectMapperOutputProcessor on write operations

src/State/Processor/ObjectMapperOutputProcessor.php

@@ -48,7 +48,7 @@ public function process(mixed $data, Operation $operation, array $uriVariables =
 
         $request = $context['request'] ?? null;
         $request?->attributes->set('persisted_data', $data);
-        $dto = $this->objectMapper->map($data, $operation->getClass());
+        $dto = $this->objectMapper->map($data, $operation->getOutput()['class'] ?? $operation->getClass());
 
         return $this->decorated ? $this->decorated->process($dto, $operation, $uriVariables, $context) : $dto;
     }

src/State/Tests/Processor/ObjectMapperOutputProcessorTest.php

@@ -107,6 +107,31 @@ public function testProcessMapsEntityToDto(): void
         $this->assertSame($result, $processor->process($entity, $operation));
     }
 
+    public function testProcessMapsEntityToDefinedOutputClass(): void
+    {
+        $entity = new \stdClass();
+        $entity->id = 1;
+        $dto = new \stdClass();
+        $dto->id = 1;
+        $result = new \stdClass();
+        $operation = new Post(class: ObjectMapperOutputDummy::class, output: ['class' => ObjectMapperOutputDtoDummy::class], map: true);
+
+        $objectMapper = $this->createMock(ObjectMapperInterface::class);
+        $objectMapper->expects($this->once())
+            ->method('map')
+            ->with($entity, ObjectMapperOutputDtoDummy::class)
+            ->willReturn($dto);
+
+        $decorated = $this->createMock(ProcessorInterface::class);
+        $decorated->expects($this->once())
+            ->method('process')
+            ->with($dto, $operation, [], $this->anything())
+            ->willReturn($result);
+
+        $processor = new ObjectMapperOutputProcessor($objectMapper, $decorated);
+        $this->assertSame($result, $processor->process($entity, $operation));
+    }
+
     public function testProcessSetsPersistedDataOnRequest(): void
     {
         $entity = new \stdClass();
@@ -136,3 +161,7 @@ public function testProcessSetsPersistedDataOnRequest(): void
 class ObjectMapperOutputDummy
 {
 }
+
+class ObjectMapperOutputDtoDummy
+{
+}