/**
* A method to test the dates returned by the _getSpanDates()
* method when used with the 'friendly' preset "last_month".
*/
function test_getSpanDatesLastMonth()
{
$oDaySpan = new OA_Admin_DaySpan();
$oDaySpan->oNowDate = new Date('2007-05-09');
$aDates = $oDaySpan->_getSpanDates('last_month');
$this->assertEqual($aDates['start']->format('%Y-%m-%d'), '2007-04-01');
$this->assertEqual($aDates['end']->format('%Y-%m-%d'), '2007-04-30');
$oDaySpan->oNowDate = new Date('2007-05-10');
$aDates = $oDaySpan->_getSpanDates('last_month');
$this->assertEqual($aDates['start']->format('%Y-%m-%d'), '2007-04-01');
$this->assertEqual($aDates['end']->format('%Y-%m-%d'), '2007-04-30');
}