Adding Unit Test to ensure a right behaviour of BpmnWorkflow Adapter

- flow->gateways (bpmn) to route (workflow) conversion is working fine
 - start and end event (bpmn) to setting start and end tasks is working fine

workflow/engine/classes/model/Route.php

@@ -226,6 +226,11 @@ class Route extends BaseRoute
         return empty($rows) ? null : $rows[0];
     }
 
+    /**
+     * @param $field
+     * @param null $value
+     * @return \Route[]
+     */
     public static function findAllBy($field, $value = null)
     {
         $field = is_array($field) ? $field : array($field => $value);