/**
  * try to get an user by loginname
  *
  */
 public function testGetUserByLoginName()
 {
     // add a test user
     $user = $this->testAddUser();
     $testUser = $this->_backend->getFullUserByLoginName($user->accountLoginName);
     $this->assertEquals($user->accountLoginName, $testUser->accountLoginName);
     $this->assertEquals('Tinebase_Model_FullUser', get_class($testUser), 'wrong type');
 }