fix: use same terminology

tests/Controller/IndexControllerTest.php

@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Tests\Controller;
 
-use App\Service\QRCodeGeneratorInterface;
+use App\Service\QRCodeProviderInterface;
 use Symfony\Bundle\FrameworkBundle\KernelBrowser;
 use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
 
@@ -76,7 +76,7 @@ class IndexControllerTest extends WebTestCase
 
     private function generateClientForSubmitTest(): KernelBrowser
     {
-        $mock = $this->createMock(QRCodeGeneratorInterface::class);
+        $mock = $this->createMock(QRCodeProviderInterface::class);
         $mock->expects($this->any())
             ->method('generateQRCodeFromEntity')
             ->will($this->returnValue('foo'));
@@ -85,7 +85,7 @@ class IndexControllerTest extends WebTestCase
         $client = static::createClient();
         $client->disableReboot();
 
-        self::getContainer()->set('App\Service\QRCodeGeneratorInterface', $mock);
+        self::getContainer()->set('App\Service\QRCodeProviderInterface', $mock);
 
         return $client;
     }