Add reproducable after changes

Author: alexander-schranz

Tests/Functional/Bundle/TestBundle/Controller/SerializerErrorController.php

@@ -16,6 +16,10 @@
 use Symfony\Component\Form\Extension\Core\Type\TextType;
 use Symfony\Component\Validator\Constraints\NotBlank;
 
+class CustomArgumentException extends \Exception
+{
+}
+
 /**
  * Controller to test serialization of various errors and exceptions.
  *
@@ -38,6 +42,11 @@ public function invalidArgumentExceptionAction()
         throw new \InvalidArgumentException('Invalid argument given.');
     }
 
+    public function customExceptionAction()
+    {
+        throw new CustomArgumentException('Custom exception');
+    }
+
     /**
      * @View
      */

Tests/Functional/Bundle/TestBundle/Resources/config/routing.yml

@@ -18,6 +18,10 @@ test_serializer_error_invalid_form:
     path:     /serializer-error/invalid-form.{_format}
     defaults: { _controller: FOS\RestBundle\Tests\Functional\Bundle\TestBundle\Controller\SerializerErrorController::invalidFormAction }
 
+test_custom_exception_serializer:
+    path:     /serializer-error/custom-argument-exception.{_format}
+    defaults: { _controller: FOS\RestBundle\Tests\Functional\Bundle\TestBundle\Controller\SerializerErrorController::customExceptionAction }
+
 # Must be defined before test_version
 test_version2:
   resource: FOS\RestBundle\Tests\Functional\Bundle\TestBundle\Controller\Version2Controller

Tests/Functional/SerializerErrorTest.php

@@ -22,6 +22,7 @@ class SerializerErrorTest extends WebTestCase
 {
     public static function tearDownAfterClass(): void
     {
+        self::deleteTmpDir('CustomFlattenExceptionNormalizer');
         self::deleteTmpDir('FlattenExceptionHandlerLegacyFormat');
         self::deleteTmpDir('FlattenExceptionHandlerRfc7807Format');
         self::deleteTmpDir('FlattenExceptionNormalizerLegacyFormat');
@@ -121,6 +122,23 @@ public function testSerializeExceptionCodeMappedToResponseStatusCodeJsonUsingErr
         $this->assertEquals(json_encode($expectedJson), $client->getResponse()->getContent());
     }
 
+    public function testCustomExceptionSerialization()
+    {
+        if (!class_exists(SerializerErrorRenderer::class)) {
+            $this->markTestSkipped();
+        }
+
+        $this->iniSet('error_log', file_exists('/dev/null') ? '/dev/null' : 'nul');
+
+        $client = $this->createClient(['test_case' => 'CustomFlattenExceptionNormalizer', 'debug' => false]);
+        $client->request('GET', '/serializer-error/custom-argument-exception.json');
+
+        $this->assertEquals(
+            '{"code":409,"message":"Conflict"}',
+            $client->getResponse()->getContent()
+        );
+    }
+
     public function serializeExceptionCodeMappedToResponseStatusCodeJsonProvider(): array
     {
         return [

Tests/Functional/app/CustomFlattenExceptionNormalizer/bundles.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of the FOSRestBundle package.
+ *
+ * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+return [
+    new \Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
+    new \FOS\RestBundle\FOSRestBundle(),
+    new \JMS\SerializerBundle\JMSSerializerBundle(),
+    new \FOS\RestBundle\Tests\Functional\Bundle\TestBundle\TestBundle(),
+];

Tests/Functional/app/CustomFlattenExceptionNormalizer/config.yml

@@ -0,0 +1,25 @@
+imports:
+    - { resource: ../config/default.yml }
+
+framework:
+    serializer: true
+
+fos_rest:
+    exception:
+        codes:
+            'FOS\RestBundle\Tests\Functional\Bundle\TestBundle\Controller\CustomArgumentException': 409
+        enabled: true
+        map_exception_codes: true
+        exception_listener: false
+        serialize_exceptions: false
+        flatten_exception_format: 'legacy'
+        serializer_error_renderer: false
+    serializer:
+        serialize_null: true
+    body_listener:
+        enabled: true
+    routing_loader: false
+    view:
+        formats:
+            json: true
+            csv: true