InfiniteLoopProblemTest.php

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<?php
 
namespace Sabre\VObject\Recur\EventIterator;
 
use DateTimeImmutable;
use DateTimeZone;
use PHPUnit\Framework\TestCase;
use Sabre\VObject\Component\VCalendar;
use Sabre\VObject\Recur;
 
class InfiniteLoopProblemTest extends TestCase {
 
    function setUp() {
 
        $this->vcal = new VCalendar();
 
    }
 
    function testFastForwardTooFar() {
 
        $ev = $this->vcal->createComponent('VEVENT');
        $ev->UID = 'foobar';
        $ev->DTSTART = '20090420T180000Z';
        $ev->RRULE = 'FREQ=WEEKLY;BYDAY=MO;UNTIL=20090704T205959Z;INTERVAL=1';
 
        $this->assertFalse($ev->isInTimeRange(new DateTimeImmutable('2012-01-01 12:00:00'), new DateTimeImmutable('3000-01-01 00:00:00')));
 
    }
 
    function testYearlyByMonthLoop() {
 
        $ev = $this->vcal->createComponent('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.
        $this->vcal->add($ev);
 
        $it = new Recur\EventIterator($this->vcal, 'uuid');
        $it->fastForward(new DateTimeImmutable('2012-01-29 23:00:00', new DateTimeZone('UTC')));
 
        $collect = [];
 
        while ($it->valid()) {
            $collect[] = $it->getDtStart();
            if ($it->getDtStart() > new DateTimeImmutable('2013-02-05 22:59:59', new DateTimeZone('UTC'))) {
                break;
            }
            $it->next();
 
        }
 
        $this->assertEquals(
            [new DateTimeImmutable('2012-02-01 15:45:00', new DateTimeZone('Europe/Berlin'))],
            $collect
        );
 
    }
 
    function testZeroInterval() {
 
        $ev = $this->vcal->createComponent('VEVENT');
        $ev->UID = 'uuid';
        $ev->DTSTART = '20120824T145700Z';
        $ev->RRULE = 'FREQ=YEARLY;INTERVAL=0';
        $this->vcal->add($ev);
 
        $it = new Recur\EventIterator($this->vcal, 'uuid');
        $it->fastForward(new DateTimeImmutable('2013-01-01 23:00:00', new DateTimeZone('UTC')));
 
        // if we got this far.. it means we are no longer infinitely looping
 
    }
 
}