symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+1-1Lines changed: 1 addition & 1 deletion b/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+1-1Lines changed: 1 addition & 1 deletion
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
+58Lines changed: 58 additions & 0 deletions b/‎src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
+58Lines changed: 58 additions & 0 deletions
@@ -1197,7 +1197,7 @@ private function addSerializerSection(ArrayNodeDefinition $rootNode, callable $e
                         ->arrayNode('default_context')
                             ->normalizeKeys(false)
                             ->useAttributeAsKey('name')
-                            ->beforeNormalization()
+                            ->validate()
                                 ->ifTrue(fn () => $this->debug && class_exists(JsonParser::class))
                                 ->then(fn (array $v) => $v + [JsonDecode::DETAILED_ERROR_MESSAGES => true])
                             ->end()
 
@@ -13,6 +13,7 @@
 
 use Doctrine\DBAL\Connection;
 use PHPUnit\Framework\TestCase;
+use Seld\JsonLint\JsonParser;
 use Symfony\Bundle\FrameworkBundle\DependencyInjection\Configuration;
 use Symfony\Bundle\FullStack;
 use Symfony\Component\Cache\Adapter\DoctrineAdapter;
@@ -566,6 +567,63 @@ public function testEnabledLockNeedsResources()
         ]);
     }
 
+    public function testSerializerJsonDetailedErrorMessagesEnabledWhenDefaultContextIsConfigured()
+    {
+        $processor = new Processor();
+        $config = $processor->processConfiguration(new Configuration(true), [
+            [
+                'serializer' => [
+                    'default_context' => [
+                        'foo' => 'bar',
+                    ],
+                ],
+            ],
+        ]);
+
+        $this->assertSame(['foo' => 'bar', JsonDecode::DETAILED_ERROR_MESSAGES => true], $config['serializer']['default_context'] ?? []);
+    }
+
+    public function testSerializerJsonDetailedErrorMessagesInDefaultContextCanBeDisabled()
+    {
+        $processor = new Processor();
+        $config = $processor->processConfiguration(new Configuration(true), [
+            [
+                'serializer' => [
+                    'default_context' => [
+                        'foo' => 'bar',
+                        JsonDecode::DETAILED_ERROR_MESSAGES => false,
+                    ],
+                ],
+            ],
+        ]);
+
+        $this->assertSame(['foo' => 'bar', JsonDecode::DETAILED_ERROR_MESSAGES => false], $config['serializer']['default_context'] ?? []);
+    }
+
+    public function testSerializerJsonDetailedErrorMessagesInDefaultContextCanBeDisabledWithSeveralConfigsBeingMerged()
+    {
+        $processor = new Processor();
+        $config = $processor->processConfiguration(new Configuration(true), [
+            [
+                'serializer' => [
+                    'default_context' => [
+                        'foo' => 'bar',
+                        JsonDecode::DETAILED_ERROR_MESSAGES => false,
+                    ],
+                ],
+            ],
+            [
+                'serializer' => [
+                    'default_context' => [
+                        'foobar' => 'baz',
+                    ],
+                ],
+            ],
+        ]);
+
+        $this->assertSame(['foo' => 'bar', JsonDecode::DETAILED_ERROR_MESSAGES => false, 'foobar' => 'baz'], $config['serializer']['default_context'] ?? []);
+    }
+
     protected static function getBundleDefaultConfig()
     {
         return [