fixes on tests [WIP]

src/Bundle/ChillMainBundle/Export/ExportManager.php

@@ -545,7 +545,7 @@ class ExportManager
         if (null === $centers) {
             $centers = $this->authorizationHelper->getReachableCenters(
                 $this->user,
-                $role
+                $role->getName()
             );
         }
 
@@ -585,7 +585,7 @@ class ExportManager
                 'center' => $center,
                 'circles' => $this->authorizationHelper->getReachableScopes(
                     $this->user,
-                    $element->requiredRole(),
+                    $element->requiredRole()->getName(),
                     $center
                 ),
             ];