Let's try this to get rid of the Too many connections error

Author: lcharette

app/tests/TestCase.php

@@ -113,6 +113,9 @@ protected function tearDown()
             // Force destroy test sessions
             $this->ci->session->destroy();
 
+            // Close DB connection
+            $this->ci->db->getDatabaseManager()->disconnect();
+
             $this->ci = null;
         }