si no hay un kernerl no utilizarlo

Entity/Workflow.php

@@ -13,6 +13,7 @@ use Symfony\Component\Console\Input\ArrayInput;
 use Symfony\Component\Console\Output\BufferedOutput;
 use WorkflowBundle\Validator\Constraints as WorkflowAssert;
 use Symfony\Component\Workflow\Registry;
+// TODO : Remplazar las referencias de "global $kenerl por algo mÃs testeable"
 
 /**
  * Workflow
@@ -456,18 +457,17 @@ class Workflow
     }
 
     public function getInitialPlace($subject) {
-
-        global $kernel;
-
-        try {
-            $registry = $kernel->getContainer()->get("workflow.registry");
-            $definition = $registry->get($subject, $this->name)->getDefinition();
-        } catch (\Exception $e) {
-            return null;
-        }
-        
-        return $definition->getInitialPlace();
-
+	global $kernel; 
+	if($kernel){
+		try {
+		    $registry = $kernel->getContainer()->get("workflow.registry");
+		    $definition = $registry->get($subject, $this->name)->getDefinition();
+		} catch (\Exception $e) {
+		    return null;
+		}
+		
+		return $definition->getInitialPlace();
+	}
     }
 
     /**
@@ -507,4 +507,4 @@ class Workflow
         return null;
     }
 
-}
+}