public function testhandleLinking()
 {
     //unset and reconnect Db to resolve mysqli fetch exeception
     global $db;
     unset($db->database);
     $db->checkConnection();
     $inboundEmail = new InboundEmail();
     $email = new Email();
     $email->from_addr = '*****@*****.**';
     $result = $inboundEmail->handleLinking($email);
     $this->assertEquals($email->from_addr, $result);
 }