function testIsExpiredShouldBeFalse()
 {
     $date_begin = new DateTime('2015-10-01 00:00:00+09:00');
     $date_end = new DateTime('2015-10-01 10:00:00+09:00');
     $period = new MovieViewerPeriod($date_begin, $date_end);
     $date_target = new DateTime('2015-10-01 09:59:59+09:00');
     timecop_freeze($date_target->getTimestamp());
     $this->assertFalse($period->isExpired($date_target));
     $this->assertFalse($period->isExpired());
 }
 function __construct($date_begin, $date_end)
 {
     parent::__construct($date_begin, $date_end);
 }