fix: enum denormalization

Author: norkunas

src/Bundle/Resources/config/services.xml

@@ -15,8 +15,11 @@
 
         <service id="dunglas_doctrine_json_odm.normalizer.array" class="Symfony\Component\Serializer\Normalizer\ArrayDenormalizer" public="false" />
 
+        <service id="dunglas_doctrine_json_odm.normalizer.backed_enum" class="Symfony\Component\Serializer\Normalizer\BackedEnumNormalizer" public="false" />
+
         <service id="dunglas_doctrine_json_odm.serializer" class="Dunglas\DoctrineJsonOdm\Serializer" public="true">
             <argument type="collection">
+                <argument type="service" id="dunglas_doctrine_json_odm.normalizer.backed_enum" />
                 <argument type="service" id="dunglas_doctrine_json_odm.normalizer.array" />
                 <argument type="service" id="dunglas_doctrine_json_odm.normalizer.object" />
             </argument>

tests/Fixtures/TestBundle/Enum/InputMode.php

@@ -0,0 +1,15 @@
+<?php
+
+/*
+ * (c) Kévin Dunglas <[email protected]>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Dunglas\DoctrineJsonOdm\Tests\Fixtures\TestBundle\Enum;
+
+enum InputMode: string
+{
+    case EMAIL = 'email';
+}

tests/FunctionalTest.php

@@ -16,6 +16,7 @@
 use Dunglas\DoctrineJsonOdm\Tests\Fixtures\TestBundle\Document\ScalarValue;
 use Dunglas\DoctrineJsonOdm\Tests\Fixtures\TestBundle\Entity\Foo;
 use Dunglas\DoctrineJsonOdm\Tests\Fixtures\TestBundle\Entity\Product;
+use Dunglas\DoctrineJsonOdm\Tests\Fixtures\TestBundle\Enum\InputMode;
 use Symfony\Component\Console\Input\StringInput;
 
 /**
@@ -192,4 +193,28 @@ public function testStoreAndRetrieveDocumentWithInstantiatedOtherSerializer(): v
         $retrievedProduct = $manager->find(Product::class, $product->id);
         $this->assertEquals($attributes, $retrievedProduct->attributes);
     }
+
+    /**
+     * @requires PHP 8.1
+     */
+    public function testStoreAndRetrieveEnum(): void
+    {
+        $attribute = new Attribute();
+        $attribute->key = 'email';
+        $attribute->value = InputMode::EMAIL;
+
+        $product = new Product();
+        $product->name = 'My product';
+        $product->attributes = [$attribute];
+
+        $manager = self::$kernel->getContainer()->get('doctrine')->getManagerForClass(Product::class);
+        $manager->persist($product);
+        $manager->flush();
+
+        $manager->clear();
+
+        $retrievedProduct = $manager->find(Product::class, $product->id);
+
+        $this->assertSame(InputMode::EMAIL, $retrievedProduct->attributes[0]->value);
+    }
 }