public function testTimelineExceptionWhenStartAfterEnd()
{
$business = new Business([new Day(Days::MONDAY, [['09:00', '13:00'], ['14:00', '17:00']])]);
$start = new \DateTime('2015-05-25 11:00');
$end = new \DateTime('2015-05-25 10:00');
$business->timeline($start, $end, new \DateInterval('P1D'));
}