minor #37209 [DI][Framework] Use PHP instead of XML for test config (GaryPEGEOT)

This PR was squashed before being merged into the 5.2-dev branch.

Discussion
----------

[DI][Framework] Use PHP instead of XML for test config

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | Partially #37186
| License       | MIT

See #37186

Commits
-------

36cc98228e [DI][Framework] Use PHP instead of XML for test config

Author: fabpot

DependencyInjection/FrameworkExtension.php

@@ -259,7 +259,7 @@ public function load(array $configs, ContainerBuilder $container)
         }
 
         if (!empty($config['test'])) {
-            $loader->load('test.xml');
+            $phpLoader->load('test.php');
 
             if (!class_exists(AbstractBrowser::class)) {
                 $container->removeDefinition('test.client');

Resources/config/test.php

@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+use Symfony\Bundle\FrameworkBundle\KernelBrowser;
+use Symfony\Bundle\FrameworkBundle\Test\TestContainer;
+use Symfony\Component\BrowserKit\CookieJar;
+use Symfony\Component\BrowserKit\History;
+use Symfony\Component\DependencyInjection\ServiceLocator;
+use Symfony\Component\HttpKernel\EventListener\TestSessionListener;
+
+return static function (ContainerConfigurator $container) {
+    $container->parameters()->set('test.client.parameters', []);
+
+    $container->services()
+        ->set('test.client', KernelBrowser::class)
+            ->args([
+                service('kernel'),
+                param('test.client.parameters'),
+                service('test.client.history'),
+                service('test.client.cookiejar'),
+            ])
+            ->share(false)
+            ->public()
+
+        ->set('test.client.history', History::class)->share(false)
+        ->set('test.client.cookiejar', CookieJar::class)->share(false)
+
+        ->set('test.session.listener', TestSessionListener::class)
+            ->args([
+                service_locator([
+                    'session' => service('session')->ignoreOnInvalid(),
+                ]),
+            ])
+            ->tag('kernel.event_subscriber')
+
+        ->set('test.service_container', TestContainer::class)
+            ->args([
+                service('kernel'),
+                'test.private_services_locator',
+            ])
+            ->public()
+
+        ->set('test.private_services_locator', ServiceLocator::class)
+            ->args([abstract_arg('callable collection')])
+            ->public()
+    ;
+};