symfony · MatTheCat · May 27, 2025
diff --git a/UPGRADE-7.4.md b/UPGRADE-7.4.md
@@ -17,6 +17,7 @@ DependencyInjection
 -------------------
 
  * Add argument `$target` to `ContainerBuilder::registerAliasForArgument()`
+ * Deprecate XML configuration format, use YAML or PHP instead
 
 FrameworkBundle
 ---------------
@@ -33,9 +34,24 @@ HttpFoundation
 
  * Deprecate using `Request::sendHeaders()` after headers have already been sent; use a `StreamedResponse` instead
 
+Routing
+-------
+
+ * Deprecate XML configuration format, use YAML, PHP or attributes instead
+
 Security
 --------
 
  * Deprecate callable firewall listeners, extend `AbstractListener` or implement `FirewallListenerInterface` instead
  * Deprecate `AbstractListener::__invoke`
  * Deprecate `LazyFirewallContext::__invoke()`
+
+Serializer
+----------
+
+ * Deprecate XML configuration format, use YAML or attributes instead
+
+Validator
+---------
+
+ * Deprecate XML configuration format, use YAML or attributes instead
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Validator/DoctrineLoaderTest.php b/src/Symfony/Bridge/Doctrine/Tests/Validator/DoctrineLoaderTest.php
@@ -22,6 +22,7 @@
 use Symfony\Bridge\Doctrine\Tests\Fixtures\DoctrineLoaderParentEntity;
 use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Bridge\Doctrine\Validator\DoctrineLoader;
+use Symfony\Bridge\PhpUnit\ExpectUserDeprecationMessageTrait;
 use Symfony\Component\Validator\Constraints\Length;
 use Symfony\Component\Validator\Mapping\AutoMappingStrategy;
 use Symfony\Component\Validator\Mapping\CascadingStrategy;
@@ -36,6 +37,8 @@
  */
 class DoctrineLoaderTest extends TestCase
 {
+    use ExpectUserDeprecationMessageTrait;
+
     public function testLoadClassMetadata()
     {
         $validator = Validation::createValidatorBuilder()
@@ -155,8 +158,13 @@ public function testExtractEnum()
         $this->assertCount(0, $enumStringMetadata); // asserts the length constraint is not added to an enum
     }
 
+    /**
+     * @group legacy
+     */
     public function testFieldMappingsConfiguration()
     {
+        $this->expectUserDeprecationMessage('Since symfony/validator 7.4: XML configuration format is deprecated, use YAML or attributes instead.');
+
         $validator = Validation::createValidatorBuilder()
             ->enableAttributeMapping()
             ->addXmlMappings([__DIR__.'/../Resources/validator/BaseUser.xml'])

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/SerializerCacheWarmerTest.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\Tests\CacheWarmer;
 
+use Symfony\Bridge\PhpUnit\ExpectUserDeprecationMessageTrait;
 use Symfony\Bundle\FrameworkBundle\CacheWarmer\SerializerCacheWarmer;
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Component\Cache\Adapter\NullAdapter;
@@ -21,11 +22,17 @@
 
 class SerializerCacheWarmerTest extends TestCase
 {
+    use ExpectUserDeprecationMessageTrait;
+
     /**
+     * @group legacy
+     *
      * @dataProvider loaderProvider
      */
     public function testWarmUp(array $loaders)
     {
+        $this->expectUserDeprecationMessage('Since symfony/serializer 7.4: XML configuration format is deprecated, use YAML or attributes instead.');
+
         $file = sys_get_temp_dir().'/cache-serializer.php';
         @unlink($file);
 
@@ -41,10 +48,14 @@ public function testWarmUp(array $loaders)
     }
 
     /**
+     * @group legacy
+     *
      * @dataProvider loaderProvider
      */
     public function testWarmUpAbsoluteFilePath(array $loaders)
     {
+        $this->expectUserDeprecationMessage('Since symfony/serializer 7.4: XML configuration format is deprecated, use YAML or attributes instead.');
+
         $file = sys_get_temp_dir().'/0/cache-serializer.php';
         @unlink($file);
 

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/ValidatorCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/ValidatorCacheWarmerTest.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\Tests\CacheWarmer;
 
+use Symfony\Bridge\PhpUnit\ExpectUserDeprecationMessageTrait;
 use Symfony\Bundle\FrameworkBundle\CacheWarmer\ValidatorCacheWarmer;
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Component\Cache\Adapter\NullAdapter;
@@ -20,8 +21,15 @@
 
 class ValidatorCacheWarmerTest extends TestCase
 {
+    use ExpectUserDeprecationMessageTrait;
+
+    /**
+     * @group legacy
+     */
     public function testWarmUp()
     {
+        $this->expectUserDeprecationMessage('Since symfony/validator 7.4: XML configuration format is deprecated, use YAML or attributes instead.');
+
         $validatorBuilder = new ValidatorBuilder();
         $validatorBuilder->addXmlMapping(__DIR__.'/../Fixtures/Validation/Resources/person.xml');
         $validatorBuilder->addYamlMapping(__DIR__.'/../Fixtures/Validation/Resources/author.yml');
@@ -42,8 +50,13 @@ public function testWarmUp()
         $this->assertTrue($arrayPool->getItem('Symfony.Bundle.FrameworkBundle.Tests.Fixtures.Validation.Author')->isHit());
     }
 
+    /**
+     * @group legacy
+     */
     public function testWarmUpAbsoluteFilePath()
     {
+        $this->expectUserDeprecationMessage('Since symfony/validator 7.4: XML configuration format is deprecated, use YAML or attributes instead.');
+
         $validatorBuilder = new ValidatorBuilder();
         $validatorBuilder->addXmlMapping(__DIR__.'/../Fixtures/Validation/Resources/person.xml');
         $validatorBuilder->addYamlMapping(__DIR__.'/../Fixtures/Validation/Resources/author.yml');

diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/XmlFrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/XmlFrameworkExtensionTest.php
@@ -15,6 +15,9 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
+/**
+ * @group legacy
+ */
 class XmlFrameworkExtensionTest extends FrameworkExtensionTestCase
 {
     protected function loadFromFile(ContainerBuilder $container, $file)

@@ -15,6 +15,9 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
+/**
+ * @group legacy
+ */
 class XmlCompleteConfigurationTest extends CompleteConfigurationTestCase
 {
     public function testFirewallPatterns()

@@ -18,6 +18,9 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
+/**
+ * @group legacy
+ */
 class XmlCustomAuthenticatorTest extends TestCase
 {
     /**

@@ -18,6 +18,9 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
+/**
+ * @group legacy
+ */
 class XmlCustomProviderTest extends TestCase
 {
     /**

@@ -14,13 +14,13 @@
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Extension\Extension;
-use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
 
 class FirewallEntryPointExtension extends Extension
 {
     public function load(array $configs, ContainerBuilder $container): void
     {
-        $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
-        $loader->load('services.xml');
+        $loader = new YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
+        $loader->load('services.yml');
     }
 }
@@ -0,0 +1,3 @@
+services:
+    firewall_entry_point.entry_point.stub:
+        class: Symfony\Bundle\SecurityBundle\Tests\Functional\Bundle\FirewallEntryPointBundle\Security\EntryPointStub