/**
  * test deleting a alertLevel that does not exist
  *
  * @expectedException PDOException
  **/
 public function testDeleteInvalidAlertLevel()
 {
     // create an AlertLevel and try to delete it without actually inserting it
     $alertLevel = new AlertLevel(null, $this->VALID_alertCode, $this->VALID_alertFrequency, $this->VALID_alertPoint, $this->VALID_alertOperator);
     $alertLevel->delete($this->getPDO());
 }