[Workflow] fix return type declarations

src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php

@@ -8,6 +8,9 @@ use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInt
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
 use Symfony\Component\Security\Core\Role\Role;
+use Symfony\Component\Security\Core\Role\RoleHierarchy;
+use Symfony\Component\Validator\ConstraintViolation;
+use Symfony\Component\Validator\ConstraintViolationList;
 use Symfony\Component\Validator\Validator\ValidatorInterface;
 use Symfony\Component\Workflow\Event\GuardEvent;
 use Symfony\Component\Workflow\EventListener\ExpressionLanguage;
@@ -41,7 +44,8 @@ class GuardListenerTest extends TestCase
         $this->authenticationChecker = $this->getMockBuilder(AuthorizationCheckerInterface::class)->getMock();
         $trustResolver = $this->getMockBuilder(AuthenticationTrustResolverInterface::class)->getMock();
         $this->validator = $this->getMockBuilder(ValidatorInterface::class)->getMock();
-        $this->listener = new GuardListener($this->configuration, $expressionLanguage, $tokenStorage, $this->authenticationChecker, $trustResolver, null, $this->validator);
+        $roleHierarchy = new RoleHierarchy([]);
+        $this->listener = new GuardListener($this->configuration, $expressionLanguage, $tokenStorage, $this->authenticationChecker, $trustResolver, $roleHierarchy, $this->validator);
     }
 
     protected function tearDown()
@@ -170,7 +174,7 @@ class GuardListenerTest extends TestCase
         $this->validator
             ->expects($this->once())
             ->method('validate')
-            ->willReturn($valid ? [] : ['a violation'])
+            ->willReturn(new ConstraintViolationList($valid ? [] : [new ConstraintViolation('a violation', null, [], '', null, '')]))
         ;
     }
 }