/**
* @test
*/
public function addUserGroupAddsUserGroup()
{
$userGroups = new Tx_Oelib_List();
$this->subject->setUserGroups($userGroups);
$userGroup = new Tx_Oelib_Model_FrontEndUserGroup();
$this->subject->addUserGroup($userGroup);
self::assertTrue($this->subject->getUserGroups()->contains($userGroup));
}
