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<?php
namespace Sabre\VObject;
use DateTime;
use DateTimeZone;
class RecurrenceIteratorInfiniteLoopProblemTest extends \PHPUnit_Framework_TestCase {
/**
* This bug came from a Fruux customer. This would result in a never-ending
* request.
*/
function testFastForwardTooFar() {
$ev = Component::create('VEVENT');
$ev->DTSTART = '20090420T180000Z';
$ev->RRULE = 'FREQ=WEEKLY;BYDAY=MO;UNTIL=20090704T205959Z;INTERVAL=1';
$this->assertFalse($ev->isInTimeRange(new DateTime('2012-01-01 12:00:00'),new DateTime('3000-01-01 00:00:00')));
}
/**
* Different bug, also likely an infinite loop.
*/
function testYearlyByMonthLoop() {
$ev = Component::create('VEVENT');
$ev->UID = 'uuid';
$ev->DTSTART = '20120101T154500';
$ev->DTSTART['TZID'] = 'Europe/Berlin';
$ev->RRULE = 'FREQ=YEARLY;INTERVAL=1;UNTIL=20120203T225959Z;BYMONTH=2;BYSETPOS=1;BYDAY=SU,MO,TU,WE,TH,FR,SA';
$ev->DTEND = '20120101T164500';
$ev->DTEND['TZID'] = 'Europe/Berlin';
// This recurrence rule by itself is a yearly rule that should happen
// every february.
//
// The BYDAY part expands this to every day of the month, but the
// BYSETPOS limits this to only the 1st day of the month. Very crazy
// way to specify this, and could have certainly been a lot easier.
$cal = Component::create('VCALENDAR');
$cal->add($ev);
$it = new RecurrenceIterator($cal,'uuid');
$it->fastForward(new DateTime('2012-01-29 23:00:00', new DateTimeZone('UTC')));
$collect = array();
while($it->valid()) {
$collect[] = $it->getDTSTART();
if ($it->getDTSTART() > new DateTime('2013-02-05 22:59:59', new DateTimeZone('UTC'))) {
break;
}
$it->next();
}
$this->assertEquals(
array(new DateTime('2012-02-01 15:45:00', new DateTimeZone('Europe/Berlin'))),
$collect
);
}
/**
* Something, somewhere produced an ics with an interval set to 0. Because
* this means we increase the current day (or week, month) by 0, this also
* results in an infinite loop.
*
* @expectedException InvalidArgumentException
* @return void
*/
function testZeroInterval() {
$ev = Component::create('VEVENT');
$ev->UID = 'uuid';
$ev->DTSTART = '20120824T145700Z';
$ev->RRULE = 'FREQ=YEARLY;INTERVAL=0';
$cal = Component::create('VCALENDAR');
$cal->add($ev);
$it = new RecurrenceIterator($cal,'uuid');
$it->fastForward(new DateTime('2013-01-01 23:00:00', new DateTimeZone('UTC')));
// if we got this far.. it means we are no longer infinitely looping
}
}
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