add a discrimnator type on onbjects

src/Bundle/ChillMainBundle/Tests/Serializer/Normalizer/DoctrineExistingEntityNormalizerTest.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Chill\MainBundle\Tests\Serializer\Normalizer;
+
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Chill\MainBundle\Serializer\Normalizer\DoctrineExistingEntityNormalizer;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
+use Chill\MainBundle\Entity\User;
+
+
+class DoctrineExistingEntityNormalizerTest extends KernelTestCase
+{
+    protected DoctrineExistingEntityNormalizer $normalizer;
+
+    protected function setUp()
+    {
+        self::bootKernel();
+        $em = self::$container->get(EntityManagerInterface::class); 
+        $serializerFactory = self::$container->get(ClassMetadataFactoryInterface::class);
+
+        $this->normalizer = new DoctrineExistingEntityNormalizer($em, $serializerFactory);
+    }
+
+    /**
+     * @dataProvider dataProviderUserId
+     */
+    public function testGetMappedClass($userId)
+    {
+        $data = [ 'type' => 'user', 'id' => $userId]; 
+        $supports = $this->normalizer->supportsDenormalization($data, User::class);
+
+        $this->assertTrue($supports);
+    }
+
+    public function dataProviderUserId()
+    {
+        self::bootKernel();
+
+        $userIds = self::$container->get(EntityManagerInterface::class)
+            ->getRepository(User::class)
+            ->createQueryBuilder('u')
+            ->select('u.id')
+            ->setMaxResults(1)
+            ->getQuery()
+            ->getResult()
+            ;
+
+        yield [ $userIds[0]['id'] ];
+    }
+}