/**
  * test updating a Tweet that already exists
  *
  * @expectedException PDOException
  **/
 public function testUpdateInvalidUser()
 {
     //create tweet with a non null userId and watch it fail
     $user = new User(null, $this->company->getCompanyId(), $this->crew->getCrewId(), $this->access->getAccessId(), $this->VALID_USERPHONE, $this->VALID_USERFIRSTNAME, $this->VALID_USERLASTNAME, $this->VALID_USEREMAIL, $this->VALID_USERACTIVATION, $this->VALID_USERHASH, $this->VALID_USERSALT);
     $user->update($this->getPDO());
 }