[6.4] Add functional test for issue #130 (DI state across kernel reboots)

config/routes.php

@@ -5,6 +5,7 @@
 use App\Controller\BrowserController;
 use App\Controller\DashboardController;
 use App\Controller\DomCrawlerController;
+use App\Controller\ExternalApiController;
 use App\Controller\FormController;
 use App\Controller\HomeController;
 use App\Controller\HttpClientController;
@@ -17,6 +18,10 @@
         ->controller(HomeController::class)
         ->methods(['GET']);
 
+    $routes->add('app_external_api', '/external-api')
+        ->controller(ExternalApiController::class)
+        ->methods(['GET']);
+
     $routes->add('app_login', '/login')
         ->controller([SecurityController::class, 'login'])
         ->methods(['GET', 'POST']);

config/services.php

@@ -59,4 +59,7 @@
             'entity' => User::class,
             'lazy' => true,
         ]);
+
+    $services->set(App\Service\ExternalApiStub::class)
+        ->public();
 };

src/Controller/ExternalApiController.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller;
+
+use App\Service\ExternalApiStub;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+
+final class ExternalApiController extends AbstractController
+{
+    public function __construct(
+        private readonly ExternalApiStub $externalApi,
+    ) {
+    }
+
+    public function __invoke(): Response
+    {
+        return new Response($this->externalApi->getResponse());
+    }
+}

src/Service/ExternalApiStub.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+/**
+ * A stand-in for an external API client whose response can be faked at runtime.
+ */
+final class ExternalApiStub
+{
+    public const REAL_RESPONSE = 'Real API response';
+
+    private string $response = self::REAL_RESPONSE;
+
+    public function setFakeResponse(string $response): void
+    {
+        $this->response = $response;
+    }
+
+    public function getResponse(): string
+    {
+        return $this->response;
+    }
+}

tests/Functional/IssuesCest.php

@@ -9,6 +9,7 @@
 use App\Doctrine\FlushCounterListener;
 use App\Doctrine\RequestStackListener;
 use App\Entity\User;
+use App\Service\ExternalApiStub;
 use App\Tests\Support\FunctionalTester;
 use Doctrine\DBAL\Connection;
 use Symfony\Component\Mime\Message;
@@ -132,4 +133,21 @@ public function ensureMessageObjectsCanBeFetched(FunctionalTester $I)
         $I->assertEmailHeaderSame('Subject', 'Text message');
         $I->assertInstanceOf(Message::class, $I->grabLastSentEmail());
     }
+
+    /**
+     * @see https://github.com/Codeception/module-symfony/issues/130
+     */
+    public function keepConfiguredServiceStateAcrossKernelReboot(FunctionalTester $I)
+    {
+        $I->amOnPage('/external-api');
+        $I->see(ExternalApiStub::REAL_RESPONSE);
+
+        /** @var ExternalApiStub $externalApi */
+        $externalApi = $I->grabService(ExternalApiStub::class);
+        $externalApi->setFakeResponse('Faked API response');
+        $I->persistService(ExternalApiStub::class);
+
+        $I->amOnPage('/external-api');
+        $I->see('Faked API response');
+    }
 }