do not allow to sign if the signature is already applyied

src/Bundle/ChillMainBundle/Tests/Controller/WorkflowAddSignatureControllerTest.php

@@ -23,6 +23,7 @@ use Chill\MainBundle\Workflow\WorkflowTransitionContextDTO;
 use Chill\PersonBundle\Entity\Person;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use Twig\Environment;
 
@@ -62,7 +63,9 @@ class WorkflowAddSignatureControllerTest extends TestCase
         $twig->method('render')->with('@ChillMain/Workflow/_signature_sign.html.twig', $this->isType('array'))
             ->willReturn('ok');
 
-        $controller = new WorkflowAddSignatureController($entityWorkflowManager, $pdfSignatureZoneAvailable, $normalizer, $twig);
+        $urlGenerator = $this->createMock(UrlGeneratorInterface::class);
+
+        $controller = new WorkflowAddSignatureController($entityWorkflowManager, $pdfSignatureZoneAvailable, $normalizer, $twig, $urlGenerator);
 
         $actual = $controller($signature, new Request());