public function testRetrieveSelectedGroups()
 {
     $dateAfter = new DateTime('2014-06-21T00:31:26+0000');
     $dateBefore = new DateTime('2014-06-21T00:31:30+0000');
     $groupList = Maestrano_Account_Group::all(array('freeTrialEndAtAfter' => $dateAfter, 'freeTrialEndAtBefore' => $dateBefore));
     $this->assertTrue(count($groupList) == 1);
     $this->assertEquals('cld-3', $groupList[0]->getId());
 }