upgrade

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/ByMonthInDailyTest.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Sabre\VObject\Recur;
+
+use
+    Sabre\VObject\Reader,
+    DateTime;
+
+class ByMonthInDailyTest extends \PHPUnit_Framework_TestCase {
+
+    /**
+     * This tests the expansion of dates with DAILY frequency in RRULE with BYMONTH restrictions
+     */
+    function testExpand() {
+
+        $ics = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Apple Inc.//iCal 4.0.4//EN
+CALSCALE:GREGORIAN
+BEGIN:VEVENT
+TRANSP:OPAQUE
+DTEND:20070925T183000Z
+UID:uuid
+DTSTAMP:19700101T000000Z
+LOCATION:
+DESCRIPTION:
+STATUS:CONFIRMED
+SEQUENCE:18
+SUMMARY:Stuff
+DTSTART:20070925T160000Z
+CREATED:20071004T144642Z
+RRULE:FREQ=DAILY;BYMONTH=9,10;BYDAY=SU
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($ics);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $vcal->expand(new DateTime('2013-09-28'), new DateTime('2014-09-11'));
+
+        foreach ($vcal->VEVENT as $event) {
+            $dates[] = $event->DTSTART->getValue();
+        }
+
+        $expectedDates = array(
+            "20130929T160000Z",
+            "20131006T160000Z",
+            "20131013T160000Z",
+            "20131020T160000Z",
+            "20131027T160000Z",
+            "20140907T160000Z"
+        );
+
+        $this->assertEquals($expectedDates, $dates, 'Recursed dates are restricted by month');
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/BySetPosHangTest.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace Sabre\VObject\Recur;
+
+use
+    Sabre\VObject\Reader,
+    DateTime;
+
+class BySetPosHangTest extends \PHPUnit_Framework_TestCase {
+
+    /**
+     * Using this iCalendar object, including BYSETPOS=-2 causes the iterator
+     * to hang, as reported in ticket #212.
+     *
+     * See: https://github.com/fruux/sabre-vobject/issues/212
+     */
+    function testExpand() {
+
+        $ics = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Sabre//Sabre VObject 3.4.2//EN
+CALSCALE:GREGORIAN
+BEGIN:VEVENT
+SUMMARY:Test event 1
+DTSTART;TZID=Europe/Copenhagen:20150101T170000
+RRULE:FREQ=MONTHLY;BYDAY=TH;BYSETPOS=-2
+UID:b4071499-6fe4-418a-83b8-2b8d5ebb38e4
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($ics);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $vcal->expand(new DateTime('2015-01-01'), new DateTime('2016-01-01'));
+
+        foreach ($vcal->VEVENT as $event) {
+            $dates[] = $event->DTSTART->getValue();
+        }
+
+        $expectedDates = array(
+            "20150101T160000Z",
+            "20150122T160000Z",
+            "20150219T160000Z",
+            "20150319T160000Z",
+            "20150423T150000Z",
+            "20150521T150000Z",
+            "20150618T150000Z",
+            "20150723T150000Z",
+            "20150820T150000Z",
+            "20150917T150000Z",
+            "20151022T150000Z",
+            "20151119T160000Z",
+            "20151224T160000Z",
+        );
+
+        $this->assertEquals($expectedDates, $dates);
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/ExpandFloatingTimesTest.php

@@ -0,0 +1,122 @@
+<?php
+
+namespace Sabre\VObject\Recur\EventIterator;
+
+use
+    DateTime,
+    DateTimeZone,
+    Sabre\VObject\Reader;
+
+class ExpandFloatingTimesTest extends \PHPUnit_Framework_TestCase {
+
+    function testExpand() {
+
+        $input = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150109T090000
+DTEND:20150109T100000
+RRULE:FREQ=WEEKLY;INTERVAL=1;UNTIL=20191002T070000Z;BYDAY=FR
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $vcal->expand(new DateTime('2015-01-01'), new DateTime('2015-01-31'));
+
+        $result = $vcal->serialize();
+
+        $output = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150109T090000Z
+DTEND:20150109T100000Z
+RECURRENCE-ID:20150109T090000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150116T090000Z
+DTEND:20150116T100000Z
+RECURRENCE-ID:20150116T090000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150123T090000Z
+DTEND:20150123T100000Z
+RECURRENCE-ID:20150123T090000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150130T090000Z
+DTEND:20150130T100000Z
+RECURRENCE-ID:20150130T090000Z
+END:VEVENT
+END:VCALENDAR
+
+ICS;
+        $this->assertEquals($output, str_replace("\r", "", $result));
+
+    }
+
+    function testExpandWithReferenceTimezone() {
+
+        $input = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150109T090000
+DTEND:20150109T100000
+RRULE:FREQ=WEEKLY;INTERVAL=1;UNTIL=20191002T070000Z;BYDAY=FR
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $vcal->expand(new DateTime('2015-01-01'), new DateTime('2015-01-31'), new \DateTimeZone('Europe/Berlin'));
+
+        $result = $vcal->serialize();
+
+        $output = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150109T080000Z
+DTEND:20150109T090000Z
+RECURRENCE-ID:20150109T080000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150116T080000Z
+DTEND:20150116T090000Z
+RECURRENCE-ID:20150116T080000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150123T080000Z
+DTEND:20150123T090000Z
+RECURRENCE-ID:20150123T080000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20150130T080000Z
+DTEND:20150130T090000Z
+RECURRENCE-ID:20150130T080000Z
+END:VEVENT
+END:VCALENDAR
+
+ICS;
+        $this->assertEquals($output, str_replace("\r", "", $result));
+
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/FifthTuesdayProblemTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Sabre\VObject\Recur\EventIterator;
+
+use Sabre\VObject\Recur;
+use Sabre\VObject\Reader;
+
+class FifthTuesdayProblemTest extends \PHPUnit_Framework_TestCase {
+
+    /**
+     * A pretty slow test. Had to be marked as 'medium' for phpunit to not die
+     * after 1 second. Would be good to optimize later.
+     *
+     * @medium
+     */
+    function testGetDTEnd() {
+
+        $ics = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Apple Inc.//iCal 4.0.4//EN
+CALSCALE:GREGORIAN
+BEGIN:VEVENT
+TRANSP:OPAQUE
+DTEND;TZID=America/New_York:20070925T170000
+UID:uuid
+DTSTAMP:19700101T000000Z
+LOCATION:
+DESCRIPTION:
+STATUS:CONFIRMED
+SEQUENCE:18
+SUMMARY:Stuff
+DTSTART;TZID=America/New_York:20070925T160000
+CREATED:20071004T144642Z
+RRULE:FREQ=MONTHLY;INTERVAL=1;UNTIL=20071030T035959Z;BYDAY=5TU
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vObject = Reader::read($ics);
+        $it = new Recur\EventIterator($vObject, (string)$vObject->VEVENT->UID);
+
+        while($it->valid()) {
+            $it->next();
+        }
+
+        // If we got here, it means we were successful. The bug that was in the
+        // system before would fail on the 5th tuesday of the month, if the 5th
+        // tuesday did not exist.
+        $this->assertTrue(true);
+
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/IncorrectExpandTest.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Sabre\VObject\Recur\EventIterator;
+
+use
+    DateTime,
+    DateTimeZone,
+    Sabre\VObject\Reader;
+
+/**
+ * This is a unittest for Issue #53.
+ */
+class RecurrenceIteratorIncorrectExpandTest extends \PHPUnit_Framework_TestCase {
+
+    function testExpand() {
+
+        $input = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20130711T050000Z
+DTEND:20130711T053000Z
+RRULE:FREQ=DAILY;INTERVAL=1;COUNT=2
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20130719T050000Z
+DTEND:20130719T053000Z
+RECURRENCE-ID:20130712T050000Z
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $vcal->expand(new DateTime('2011-01-01'), new DateTime('2014-01-01'));
+
+        $result = $vcal->serialize();
+
+        $output = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20130711T050000Z
+DTEND:20130711T053000Z
+RECURRENCE-ID:20130711T050000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTSTART:20130719T050000Z
+DTEND:20130719T053000Z
+RECURRENCE-ID:20130712T050000Z
+END:VEVENT
+END:VCALENDAR
+
+ICS;
+        $this->assertEquals($output, str_replace("\r", "", $result));
+    
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/InfiniteLoopProblemTest.php

@@ -0,0 +1,99 @@
+<?php
+
+namespace Sabre\VObject\Recur\EventIterator;
+
+use
+    DateTime,
+    DateTimeZone,
+    Sabre\VObject\Component\VCalendar,
+    Sabre\VObject\Recur;
+
+class EventIteratorInfiniteLoopProblemTest extends \PHPUnit_Framework_TestCase {
+
+    public function setUp() {
+
+        $this->vcal = new VCalendar();
+
+    }
+
+    /**
+     * This bug came from a Fruux customer. This would result in a never-ending
+     * request.
+     */
+    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 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 = $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 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 = $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 DateTime('2013-01-01 23:00:00', new DateTimeZone('UTC')));
+
+        // if we got this far.. it means we are no longer infinitely looping
+
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/Issue48Test.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Sabre\VObject;
+
+use
+    DateTime,
+    DateTimeZone;
+
+class Issue48Test extends \PHPUnit_Framework_TestCase {
+
+    function testExpand() {
+
+        $input = <<<ICS
+BEGIN:VCALENDAR
+BEGIN:VEVENT
+UID:foo
+DTEND;TZID=Europe/Moscow:20130710T120000
+DTSTART;TZID=Europe/Moscow:20130710T110000
+RRULE:FREQ=DAILY;UNTIL=20130712T195959Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foo
+DTEND;TZID=Europe/Moscow:20130713T120000
+DTSTART;TZID=Europe/Moscow:20130713T110000
+RECURRENCE-ID;TZID=Europe/Moscow:20130711T110000
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $it = new Recur\EventIterator($vcal, 'foo');
+
+        $result = iterator_to_array($it);
+
+        $tz = new DateTimeZone('Europe/Moscow');
+
+        $expected = array(
+            new DateTime('2013-07-10 11:00:00', $tz),
+            new DateTime('2013-07-12 11:00:00', $tz),
+            new DateTime('2013-07-13 11:00:00', $tz),
+        );
+
+        $this->assertEquals($expected, $result);
+
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/Issue50Test.php

@@ -0,0 +1,128 @@
+<?php
+
+namespace Sabre\VObject;
+
+use
+    DateTime,
+    DateTimeZone;
+
+class Issue50Test extends \PHPUnit_Framework_TestCase {
+
+    function testExpand() {
+
+        $input = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
+BEGIN:VTIMEZONE
+TZID:Europe/Brussels
+X-LIC-LOCATION:Europe/Brussels
+BEGIN:DAYLIGHT
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+TZNAME:CEST
+DTSTART:19700329T020000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+TZNAME:CET
+DTSTART:19701025T030000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
+END:STANDARD
+END:VTIMEZONE
+BEGIN:VEVENT
+CREATED:20130705T142510Z
+LAST-MODIFIED:20130715T132556Z
+DTSTAMP:20130715T132556Z
+UID:1aef0b27-3d92-4581-829a-11999dd36724
+SUMMARY:Werken
+RRULE:FREQ=DAILY;COUNT=5
+DTSTART;TZID=Europe/Brussels:20130715T090000
+DTEND;TZID=Europe/Brussels:20130715T170000
+LOCATION:Job
+DESCRIPTION:Vrij
+X-MOZ-GENERATION:9
+END:VEVENT
+BEGIN:VEVENT
+CREATED:20130715T081654Z
+LAST-MODIFIED:20130715T110931Z
+DTSTAMP:20130715T110931Z
+UID:1aef0b27-3d92-4581-829a-11999dd36724
+SUMMARY:Werken
+RECURRENCE-ID;TZID=Europe/Brussels:20130719T090000
+DTSTART;TZID=Europe/Brussels:20130719T070000
+DTEND;TZID=Europe/Brussels:20130719T150000
+SEQUENCE:1
+LOCATION:Job
+DESCRIPTION:Vrij
+X-MOZ-GENERATION:1
+END:VEVENT
+BEGIN:VEVENT
+CREATED:20130715T111654Z
+LAST-MODIFIED:20130715T132556Z
+DTSTAMP:20130715T132556Z
+UID:1aef0b27-3d92-4581-829a-11999dd36724
+SUMMARY:Werken
+RECURRENCE-ID;TZID=Europe/Brussels:20130716T090000
+DTSTART;TZID=Europe/Brussels:20130716T070000
+DTEND;TZID=Europe/Brussels:20130716T150000
+SEQUENCE:1
+LOCATION:Job
+X-MOZ-GENERATION:2
+END:VEVENT
+BEGIN:VEVENT
+CREATED:20130715T125942Z
+LAST-MODIFIED:20130715T130023Z
+DTSTAMP:20130715T130023Z
+UID:1aef0b27-3d92-4581-829a-11999dd36724
+SUMMARY:Werken
+RECURRENCE-ID;TZID=Europe/Brussels:20130717T090000
+DTSTART;TZID=Europe/Brussels:20130717T070000
+DTEND;TZID=Europe/Brussels:20130717T150000
+SEQUENCE:1
+LOCATION:Job
+X-MOZ-GENERATION:3
+END:VEVENT
+BEGIN:VEVENT
+CREATED:20130715T130024Z
+LAST-MODIFIED:20130715T130034Z
+DTSTAMP:20130715T130034Z
+UID:1aef0b27-3d92-4581-829a-11999dd36724
+SUMMARY:Werken
+RECURRENCE-ID;TZID=Europe/Brussels:20130718T090000
+DTSTART;TZID=Europe/Brussels:20130718T090000
+DTEND;TZID=Europe/Brussels:20130718T170000
+LOCATION:Job
+X-MOZ-GENERATION:5
+DESCRIPTION:Vrij
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $it = new Recur\EventIterator($vcal, '1aef0b27-3d92-4581-829a-11999dd36724');
+
+        $result = array();
+        foreach($it as $instance) {
+
+            $result[] = $instance;
+
+        }
+
+        $tz = new DateTimeZone('Europe/Brussels');
+
+        $this->assertEquals(array(
+            new DateTime('2013-07-15 09:00:00', $tz),
+            new DateTime('2013-07-16 07:00:00', $tz),
+            new DateTime('2013-07-17 07:00:00', $tz),
+            new DateTime('2013-07-18 09:00:00', $tz),
+            new DateTime('2013-07-19 07:00:00', $tz),
+        ), $result);
+
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/MissingOverriddenTest.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Sabre\VObject\Recur\EventIterator;
+
+use
+    DateTime,
+    DateTimeZone,
+    Sabre\VObject\Reader;
+
+class RecurrenceIteratorMissingOverriddenTest extends \PHPUnit_Framework_TestCase {
+
+    function testExpand() {
+
+        $input = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20130727T120000Z
+DURATION:PT1H
+RRULE:FREQ=DAILY;COUNT=2
+SUMMARY:A
+END:VEVENT
+BEGIN:VEVENT
+RECURRENCE-ID:20130728T120000Z
+UID:foo
+DTSTART:20140101T120000Z
+DURATION:PT1H
+SUMMARY:B
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $vcal->expand(new DateTime('2011-01-01'), new DateTime('2015-01-01'));
+
+        $result = $vcal->serialize();
+
+        $output = <<<ICS
+BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+UID:foo
+DTSTART:20130727T120000Z
+DURATION:PT1H
+SUMMARY:A
+RECURRENCE-ID:20130727T120000Z
+END:VEVENT
+BEGIN:VEVENT
+RECURRENCE-ID:20130728T120000Z
+UID:foo
+DTSTART:20140101T120000Z
+DURATION:PT1H
+SUMMARY:B
+END:VEVENT
+END:VCALENDAR
+
+ICS;
+        $this->assertEquals($output, str_replace("\r","",$result));
+    
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/NoInstancesTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace Sabre\VObject\Recur;
+
+use
+    Sabre\VObject\Reader;
+
+class IssueEXDATETest extends \PHPUnit_Framework_TestCase {
+
+    /**
+     * @expectedException \Sabre\VObject\Recur\NoInstancesException
+     */
+    function testRecurrence() {
+
+        $input = <<<ICS
+BEGIN:VCALENDAR
+PRODID:-//Google Inc//Google Calendar 70.9054//EN
+VERSION:2.0
+BEGIN:VEVENT
+DTSTART;TZID=Europe/Berlin:20130329T140000
+DTEND;TZID=Europe/Berlin:20130329T153000
+RRULE:FREQ=WEEKLY;BYDAY=FR;UNTIL=20130412T115959Z
+EXDATE;TZID=Europe/Berlin:20130405T140000
+EXDATE;TZID=Europe/Berlin:20130329T140000
+DTSTAMP:20140916T201215Z
+UID:foo
+SEQUENCE:1
+SUMMARY:foo
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $this->assertInstanceOf('Sabre\\VObject\\Component\\VCalendar', $vcal);
+
+        $it = new EventIterator($vcal, 'foo');
+
+    }
+
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/OverrideFirstEventTest.php

@@ -0,0 +1,122 @@
+<?php
+
+namespace Sabre\VObject\RecurrenceIterator;
+
+use Sabre\VObject\Reader;
+use DateTime;
+
+class OverrideFirstEventTest extends \PHPUnit_Framework_TestCase {
+
+    function testOverrideFirstEvent() {
+
+        $input =  <<<ICS
+BEGIN:VCALENDAR
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140803T120000Z
+RRULE:FREQ=WEEKLY
+SUMMARY:Original
+END:VEVENT
+BEGIN:VEVENT
+UID:foobar
+RECURRENCE-ID:20140803T120000Z
+DTSTART:20140803T120000Z
+SUMMARY:Overridden
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $vcal->expand(new DateTime('2014-08-01'), new DateTime('2014-09-01'));
+
+        $expected = <<<ICS
+BEGIN:VCALENDAR
+BEGIN:VEVENT
+UID:foobar
+RECURRENCE-ID:20140803T120000Z
+DTSTART:20140803T120000Z
+SUMMARY:Overridden
+END:VEVENT
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140810T120000Z
+SUMMARY:Original
+RECURRENCE-ID:20140810T120000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140817T120000Z
+SUMMARY:Original
+RECURRENCE-ID:20140817T120000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140824T120000Z
+SUMMARY:Original
+RECURRENCE-ID:20140824T120000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140831T120000Z
+SUMMARY:Original
+RECURRENCE-ID:20140831T120000Z
+END:VEVENT
+END:VCALENDAR
+
+ICS;
+
+        $newIcs = $vcal->serialize();
+        $newIcs = str_replace("\r\n","\n", $newIcs);
+        $this->assertEquals(
+            $expected,
+            $newIcs
+        );
+
+
+    }
+
+    function testRemoveFirstEvent() {
+
+        $input =  <<<ICS
+BEGIN:VCALENDAR
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140803T120000Z
+RRULE:FREQ=WEEKLY
+EXDATE:20140803T120000Z
+SUMMARY:Original
+END:VEVENT
+END:VCALENDAR
+ICS;
+
+        $vcal = Reader::read($input);
+        $vcal->expand(new DateTime('2014-08-01'), new DateTime('2014-08-19'));
+
+        $expected = <<<ICS
+BEGIN:VCALENDAR
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140810T120000Z
+SUMMARY:Original
+RECURRENCE-ID:20140810T120000Z
+END:VEVENT
+BEGIN:VEVENT
+UID:foobar
+DTSTART:20140817T120000Z
+SUMMARY:Original
+RECURRENCE-ID:20140817T120000Z
+END:VEVENT
+END:VCALENDAR
+
+ICS;
+
+        $newIcs = $vcal->serialize();
+        $newIcs = str_replace("\r\n","\n", $newIcs);
+        $this->assertEquals(
+            $expected,
+            $newIcs
+        );
+
+
+    }
+}

vendor/sabre/vobject/tests/VObject/Recur/EventIterator/SameDateForRecurringEventsTest.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Sabre\VObject\Recur;
+
+use Sabre\VObject\Recur\EventIterator;
+use Sabre\VObject\Reader;
+
+/**
+ * Testing case when overridden recurring events have same start date.
+ *
+ * Class SameDateForRecurringEventsTest
+ */
+class SameDateForRecurringEventsTest extends \PHPUnit_Framework_TestCase
+{
+
+    /**
+     * Checking is all events iterated by EventIterator.
+     */
+    public function testAllEventsArePresentInIterator()
+    {
+        $ics = <<<ICS
+BEGIN:VCALENDAR
+BEGIN:VEVENT
+UID:1
+DTSTART;TZID=Europe/Kiev:20160713T110000
+DTEND;TZID=Europe/Kiev:20160713T113000
+RRULE:FREQ=DAILY;INTERVAL=1;COUNT=3
+END:VEVENT
+BEGIN:VEVENT
+UID:2
+DTSTART;TZID=Europe/Kiev:20160713T110000
+DTEND;TZID=Europe/Kiev:20160713T113000
+RECURRENCE-ID;TZID=Europe/Kiev:20160714T110000
+END:VEVENT
+BEGIN:VEVENT
+UID:3
+DTSTART;TZID=Europe/Kiev:20160713T110000
+DTEND;TZID=Europe/Kiev:20160713T113000
+RECURRENCE-ID;TZID=Europe/Kiev:20160715T110000
+END:VEVENT
+BEGIN:VEVENT
+UID:4
+DTSTART;TZID=Europe/Kiev:20160713T110000
+DTEND;TZID=Europe/Kiev:20160713T113000
+RECURRENCE-ID;TZID=Europe/Kiev:20160716T110000
+END:VEVENT
+END:VCALENDAR
+
+
+ICS;
+        $vCalendar = Reader::read($ics);
+        $eventIterator = new EventIterator($vCalendar->getComponents());
+
+        $this->assertEquals(4, iterator_count($eventIterator), 'in ICS 4 events');
+    }
+}

vendor/sabre/vobject/tests/VObject/Recur/RDateIteratorTest.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Sabre\VObject\Recur;
+
+use DateTime;
+use DateTimeZone;
+
+class RDateIteratorTest extends \PHPUnit_Framework_TestCase {
+
+    function testSimple() {
+
+        $utc = new DateTimeZone('UTC');
+        $it = new RDateIterator('20140901T000000Z,20141001T000000Z', new DateTime('2014-08-01 00:00:00', $utc));
+
+        $expected = array(
+            new DateTime('2014-08-01 00:00:00', $utc),
+            new DateTime('2014-09-01 00:00:00', $utc),
+            new DateTime('2014-10-01 00:00:00', $utc),
+        );
+
+        $this->assertEquals(
+            $expected,
+            iterator_to_array($it)
+        );
+
+        $this->assertFalse($it->isInfinite());
+
+    }
+
+    function testFastForward() {
+
+        $utc = new DateTimeZone('UTC');
+        $it = new RDateIterator('20140901T000000Z,20141001T000000Z', new DateTime('2014-08-01 00:00:00', $utc));
+
+        $it->fastForward(new DateTime('2014-08-15 00:00:00'));
+
+        $result = array();
+        while($it->valid()) {
+            $result[] = $it->current();
+            $it->next();
+        }
+
+        $expected = array(
+            new DateTime('2014-09-01 00:00:00', $utc),
+            new DateTime('2014-10-01 00:00:00', $utc),
+        );
+
+        $this->assertEquals(
+            $expected,
+            $result
+        );
+
+        $this->assertFalse($it->isInfinite());
+
+    }
+}

vendor/sabre/vobject/tests/VObject/Recur/RRuleIteratorTest.php

@@ -0,0 +1,713 @@
+<?php
+
+namespace Sabre\VObject\Recur;
+
+use DateTime;
+use DateTimeZone;
+
+class RRuleIteratorTest extends \PHPUnit_Framework_TestCase {
+
+    function testHourly() {
+
+        $this->parse(
+            'FREQ=HOURLY;INTERVAL=3;COUNT=12',
+            '2011-10-07 12:00:00',
+            array(
+                '2011-10-07 12:00:00',
+                '2011-10-07 15:00:00',
+                '2011-10-07 18:00:00',
+                '2011-10-07 21:00:00',
+                '2011-10-08 00:00:00',
+                '2011-10-08 03:00:00',
+                '2011-10-08 06:00:00',
+                '2011-10-08 09:00:00',
+                '2011-10-08 12:00:00',
+                '2011-10-08 15:00:00',
+                '2011-10-08 18:00:00',
+                '2011-10-08 21:00:00',
+            )
+        );
+
+    }
+
+    function testDaily() {
+
+        $this->parse(
+            'FREQ=DAILY;INTERVAL=3;UNTIL=20111025T000000Z',
+            '2011-10-07',
+            array(
+                '2011-10-07 00:00:00',
+                '2011-10-10 00:00:00',
+                '2011-10-13 00:00:00',
+                '2011-10-16 00:00:00',
+                '2011-10-19 00:00:00',
+                '2011-10-22 00:00:00',
+                '2011-10-25 00:00:00',
+            )
+        );
+
+    }
+
+    function testDailyByDayByHour() {
+
+        $this->parse(
+            'FREQ=DAILY;BYDAY=SA,SU;BYHOUR=6,7',
+            '2011-10-08 06:00:00',
+            array(
+                '2011-10-08 06:00:00',
+                '2011-10-08 07:00:00',
+                '2011-10-09 06:00:00',
+                '2011-10-09 07:00:00',
+                '2011-10-15 06:00:00',
+                '2011-10-15 07:00:00',
+                '2011-10-16 06:00:00',
+                '2011-10-16 07:00:00',
+                '2011-10-22 06:00:00',
+                '2011-10-22 07:00:00',
+                '2011-10-23 06:00:00',
+                '2011-10-23 07:00:00',
+            )
+        );
+
+    }
+
+    function testDailyByHour() {
+
+        $this->parse(
+            'FREQ=DAILY;INTERVAL=2;BYHOUR=10,11,12,13,14,15',
+            '2012-10-11 12:00:00',
+            array(
+                '2012-10-11 12:00:00',
+                '2012-10-11 13:00:00',
+                '2012-10-11 14:00:00',
+                '2012-10-11 15:00:00',
+                '2012-10-13 10:00:00',
+                '2012-10-13 11:00:00',
+                '2012-10-13 12:00:00',
+                '2012-10-13 13:00:00',
+                '2012-10-13 14:00:00',
+                '2012-10-13 15:00:00',
+                '2012-10-15 10:00:00',
+                '2012-10-15 11:00:00',
+            )
+        );
+
+    }
+
+    function testDailyByDay() {
+
+        $this->parse(
+            'FREQ=DAILY;INTERVAL=2;BYDAY=TU,WE,FR',
+            '2011-10-07 12:00:00',
+            array(
+                '2011-10-07 12:00:00',
+                '2011-10-11 12:00:00',
+                '2011-10-19 12:00:00',
+                '2011-10-21 12:00:00',
+                '2011-10-25 12:00:00',
+                '2011-11-02 12:00:00',
+                '2011-11-04 12:00:00',
+                '2011-11-08 12:00:00',
+                '2011-11-16 12:00:00',
+                '2011-11-18 12:00:00',
+                '2011-11-22 12:00:00',
+                '2011-11-30 12:00:00',
+            )
+        );
+
+    }
+
+    function testDailyCount() {
+
+        $this->parse(
+            'FREQ=DAILY;COUNT=5',
+            '2014-08-01 18:03:00',
+            array(
+                '2014-08-01 18:03:00',
+                '2014-08-02 18:03:00',
+                '2014-08-03 18:03:00',
+                '2014-08-04 18:03:00',
+                '2014-08-05 18:03:00',
+            )
+        );
+
+    }
+
+    function testDailyByMonth() {
+
+        $this->parse(
+            'FREQ=DAILY;BYMONTH=9,10;BYDAY=SU',
+            '2007-10-04 16:00:00',
+            array(
+                "2013-09-29 16:00:00",
+                "2013-10-06 16:00:00",
+                "2013-10-13 16:00:00",
+                "2013-10-20 16:00:00",
+                "2013-10-27 16:00:00",
+                "2014-09-07 16:00:00"
+            ),
+            '2013-09-28'
+        );
+
+    }
+
+    function testWeekly() {
+
+        $this->parse(
+            'FREQ=WEEKLY;INTERVAL=2;COUNT=10',
+            '2011-10-07 00:00:00',
+            array(
+                '2011-10-07 00:00:00',
+                '2011-10-21 00:00:00',
+                '2011-11-04 00:00:00',
+                '2011-11-18 00:00:00',
+                '2011-12-02 00:00:00',
+                '2011-12-16 00:00:00',
+                '2011-12-30 00:00:00',
+                '2012-01-13 00:00:00',
+                '2012-01-27 00:00:00',
+                '2012-02-10 00:00:00',
+            )
+        );
+
+    }
+
+    function testWeeklyByDay() {
+
+        $this->parse(
+            'FREQ=WEEKLY;INTERVAL=1;COUNT=4;BYDAY=MO;WKST=SA',
+            '2014-08-01 00:00:00',
+            array(
+                '2014-08-01 00:00:00',
+                '2014-08-04 00:00:00',
+                '2014-08-11 00:00:00',
+                '2014-08-18 00:00:00',
+            )
+        );
+
+    }
+
+    function testWeeklyByDay2() {
+
+        $this->parse(
+            'FREQ=WEEKLY;INTERVAL=2;BYDAY=TU,WE,FR;WKST=SU',
+            '2011-10-07 00:00:00',
+            array(
+                '2011-10-07 00:00:00',
+                '2011-10-18 00:00:00',
+                '2011-10-19 00:00:00',
+                '2011-10-21 00:00:00',
+                '2011-11-01 00:00:00',
+                '2011-11-02 00:00:00',
+                '2011-11-04 00:00:00',
+                '2011-11-15 00:00:00',
+                '2011-11-16 00:00:00',
+                '2011-11-18 00:00:00',
+                '2011-11-29 00:00:00',
+                '2011-11-30 00:00:00',
+            )
+        );
+
+    }
+
+    function testWeeklyByDayByHour() {
+
+        $this->parse(
+            'FREQ=WEEKLY;INTERVAL=2;BYDAY=TU,WE,FR;WKST=MO;BYHOUR=8,9,10',
+            '2011-10-07 08:00:00',
+            array(
+                '2011-10-07 08:00:00',
+                '2011-10-07 09:00:00',
+                '2011-10-07 10:00:00',
+                '2011-10-18 08:00:00',
+                '2011-10-18 09:00:00',
+                '2011-10-18 10:00:00',
+                '2011-10-19 08:00:00',
+                '2011-10-19 09:00:00',
+                '2011-10-19 10:00:00',
+                '2011-10-21 08:00:00',
+                '2011-10-21 09:00:00',
+                '2011-10-21 10:00:00',
+                '2011-11-01 08:00:00',
+                '2011-11-01 09:00:00',
+                '2011-11-01 10:00:00',
+            )
+        );
+
+    }
+
+    function testWeeklyByDaySpecificHour() {
+
+        $this->parse(
+            'FREQ=WEEKLY;INTERVAL=2;BYDAY=TU,WE,FR;WKST=SU',
+            '2011-10-07 18:00:00',
+            array(
+                '2011-10-07 18:00:00',
+                '2011-10-18 18:00:00',
+                '2011-10-19 18:00:00',
+                '2011-10-21 18:00:00',
+                '2011-11-01 18:00:00',
+                '2011-11-02 18:00:00',
+                '2011-11-04 18:00:00',
+                '2011-11-15 18:00:00',
+                '2011-11-16 18:00:00',
+                '2011-11-18 18:00:00',
+                '2011-11-29 18:00:00',
+                '2011-11-30 18:00:00',
+            )
+        );
+
+    }
+
+    function testMonthly() {
+
+        $this->parse(
+            'FREQ=MONTHLY;INTERVAL=3;COUNT=5',
+            '2011-12-05 00:00:00',
+            array(
+                 '2011-12-05 00:00:00',
+                 '2012-03-05 00:00:00',
+                 '2012-06-05 00:00:00',
+                 '2012-09-05 00:00:00',
+                 '2012-12-05 00:00:00',
+            )
+        );
+
+    }
+
+    function testMonlthyEndOfMonth() {
+
+        $this->parse(
+            'FREQ=MONTHLY;INTERVAL=2;COUNT=12',
+            '2011-12-31 00:00:00',
+            array(
+                '2011-12-31 00:00:00',
+                '2012-08-31 00:00:00',
+                '2012-10-31 00:00:00',
+                '2012-12-31 00:00:00',
+                '2013-08-31 00:00:00',
+                '2013-10-31 00:00:00',
+                '2013-12-31 00:00:00',
+                '2014-08-31 00:00:00',
+                '2014-10-31 00:00:00',
+                '2014-12-31 00:00:00',
+                '2015-08-31 00:00:00',
+                '2015-10-31 00:00:00',
+            )
+        );
+
+    }
+
+    function testMonthlyByMonthDay() {
+
+        $this->parse(
+            'FREQ=MONTHLY;INTERVAL=5;COUNT=9;BYMONTHDAY=1,31,-7',
+            '2011-01-01 00:00:00',
+            array(
+                '2011-01-01 00:00:00',
+                '2011-01-25 00:00:00',
+                '2011-01-31 00:00:00',
+                '2011-06-01 00:00:00',
+                '2011-06-24 00:00:00',
+                '2011-11-01 00:00:00',
+                '2011-11-24 00:00:00',
+                '2012-04-01 00:00:00',
+                '2012-04-24 00:00:00',
+            )
+        );
+
+    }
+
+    function testMonthlyByDay() {
+
+        $this->parse(
+            'FREQ=MONTHLY;INTERVAL=2;COUNT=16;BYDAY=MO,-2TU,+1WE,3TH',
+            '2011-01-03 00:00:00',
+            array(
+                '2011-01-03 00:00:00',
+                '2011-01-05 00:00:00',
+                '2011-01-10 00:00:00',
+                '2011-01-17 00:00:00',
+                '2011-01-18 00:00:00',
+                '2011-01-20 00:00:00',
+                '2011-01-24 00:00:00',
+                '2011-01-31 00:00:00',
+                '2011-03-02 00:00:00',
+                '2011-03-07 00:00:00',
+                '2011-03-14 00:00:00',
+                '2011-03-17 00:00:00',
+                '2011-03-21 00:00:00',
+                '2011-03-22 00:00:00',
+                '2011-03-28 00:00:00',
+                '2011-05-02 00:00:00',
+            )
+        );
+
+    }
+
+    function testMonthlyByDayByMonthDay() {
+
+        $this->parse(
+            'FREQ=MONTHLY;COUNT=10;BYDAY=MO;BYMONTHDAY=1',
+            '2011-08-01 00:00:00',
+            array(
+                '2011-08-01 00:00:00',
+                '2012-10-01 00:00:00',
+                '2013-04-01 00:00:00',
+                '2013-07-01 00:00:00',
+                '2014-09-01 00:00:00',
+                '2014-12-01 00:00:00',
+                '2015-06-01 00:00:00',
+                '2016-02-01 00:00:00',
+                '2016-08-01 00:00:00',
+                '2017-05-01 00:00:00',
+            )
+        );
+
+    }
+
+    function testMonthlyByDayBySetPos() {
+
+        $this->parse(
+            'FREQ=MONTHLY;COUNT=10;BYDAY=MO,TU,WE,TH,FR;BYSETPOS=1,-1',
+            '2011-01-03 00:00:00',
+            array(
+                '2011-01-03 00:00:00',
+                '2011-01-31 00:00:00',
+                '2011-02-01 00:00:00',
+                '2011-02-28 00:00:00',
+                '2011-03-01 00:00:00',
+                '2011-03-31 00:00:00',
+                '2011-04-01 00:00:00',
+                '2011-04-29 00:00:00',
+                '2011-05-02 00:00:00',
+                '2011-05-31 00:00:00',
+            )
+        );
+
+    }
+
+    function testYearly() {
+
+        $this->parse(
+            'FREQ=YEARLY;COUNT=10;INTERVAL=3',
+            '2011-01-01 00:00:00',
+            array(
+                '2011-01-01 00:00:00',
+                '2014-01-01 00:00:00',
+                '2017-01-01 00:00:00',
+                '2020-01-01 00:00:00',
+                '2023-01-01 00:00:00',
+                '2026-01-01 00:00:00',
+                '2029-01-01 00:00:00',
+                '2032-01-01 00:00:00',
+                '2035-01-01 00:00:00',
+                '2038-01-01 00:00:00',
+            )
+        );
+    }
+
+    function testYearlyLeapYear() {
+
+        $this->parse(
+            'FREQ=YEARLY;COUNT=3',
+            '2012-02-29 00:00:00',
+            array(
+                '2012-02-29 00:00:00',
+                '2016-02-29 00:00:00',
+                '2020-02-29 00:00:00',
+            )
+        );
+    }
+
+    function testYearlyByMonth() {
+
+        $this->parse(
+            'FREQ=YEARLY;COUNT=8;INTERVAL=4;BYMONTH=4,10',
+            '2011-04-07 00:00:00',
+            array(
+                '2011-04-07 00:00:00',
+                '2011-10-07 00:00:00',
+                '2015-04-07 00:00:00',
+                '2015-10-07 00:00:00',
+                '2019-04-07 00:00:00',
+                '2019-10-07 00:00:00',
+                '2023-04-07 00:00:00',
+                '2023-10-07 00:00:00',
+            )
+        );
+
+    }
+
+    function testYearlyByMonthByDay() {
+
+        $this->parse(
+            'FREQ=YEARLY;COUNT=8;INTERVAL=5;BYMONTH=4,10;BYDAY=1MO,-1SU',
+            '2011-04-04 00:00:00',
+            array(
+                '2011-04-04 00:00:00',
+                '2011-04-24 00:00:00',
+                '2011-10-03 00:00:00',
+                '2011-10-30 00:00:00',
+                '2016-04-04 00:00:00',
+                '2016-04-24 00:00:00',
+                '2016-10-03 00:00:00',
+                '2016-10-30 00:00:00',
+            )
+        );
+
+    }
+
+    function testFastForward() {
+
+        // The idea is that we're fast-forwarding too far in the future, so
+        // there will be no results left.
+        $this->parse(
+            'FREQ=YEARLY;COUNT=8;INTERVAL=5;BYMONTH=4,10;BYDAY=1MO,-1SU',
+            '2011-04-04 00:00:00',
+            array(),
+            '2020-05-05 00:00:00'
+        );
+
+    } 
+
+    /**
+     * The bug that was in the
+     * system before would fail on the 5th tuesday of the month, if the 5th
+     * tuesday did not exist.
+     *
+     * A pretty slow test. Had to be marked as 'medium' for phpunit to not die
+     * after 1 second. Would be good to optimize later.
+     *
+     * @medium
+     */
+    function testFifthTuesdayProblem() {
+
+        $this->parse(
+            'FREQ=MONTHLY;INTERVAL=1;UNTIL=20071030T035959Z;BYDAY=5TU',
+            '2007-10-04 14:46:42',
+            array(
+                "2007-10-04 14:46:42",
+            )
+        );
+
+    }
+
+    /**
+     * This bug came from a Fruux customer. This would result in a never-ending
+     * request.
+     */
+    function testFastFowardTooFar() {
+
+        $this->parse(
+            'FREQ=WEEKLY;BYDAY=MO;UNTIL=20090704T205959Z;INTERVAL=1',
+            '2009-04-20 18:00:00',
+            array(
+                '2009-04-20 18:00:00',
+                '2009-04-27 18:00:00',
+                '2009-05-04 18:00:00',
+                '2009-05-11 18:00:00',
+                '2009-05-18 18:00:00',
+                '2009-05-25 18:00:00',
+                '2009-06-01 18:00:00',
+                '2009-06-08 18:00:00',
+                '2009-06-15 18:00:00',
+                '2009-06-22 18:00:00',
+                '2009-06-29 18:00:00',
+            )
+        );
+
+    }
+
+    /**
+     * This also at one point caused an infinite loop. We're keeping the test.
+     */
+    function testYearlyByMonthLoop() {
+
+        $this->parse(
+            'FREQ=YEARLY;INTERVAL=1;UNTIL=20120203T225959Z;BYMONTH=2;BYSETPOS=1;BYDAY=SU,MO,TU,WE,TH,FR,SA',
+            '2012-01-01 15:45:00',
+            array(
+                '2012-02-01 15:45:00',
+            ),
+            '2012-01-29 23:00:00'
+        );
+
+
+    }
+
+    /**
+     * 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
+     */
+    function testZeroInterval() {
+
+        $this->parse(
+            'FREQ=YEARLY;INTERVAL=0',
+            '2012-08-24 14:57:00',
+            array(),
+            '2013-01-01 23:00:00'
+        );
+
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    function testInvalidFreq() {
+
+        $this->parse(
+            'FREQ=SMONTHLY;INTERVAL=3;UNTIL=20111025T000000Z',
+            '2011-10-07',
+            array()
+        );
+
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    function testByDayBadOffset() {
+
+        $this->parse(
+            'FREQ=WEEKLY;INTERVAL=1;COUNT=4;BYDAY=0MO;WKST=SA',
+            '2014-08-01 00:00:00',
+            array()
+        );
+
+    }
+
+    function testUntilBeginHAsTimezone() {
+
+        $this->parse(
+            'FREQ=WEEKLY;UNTIL=20131118T183000',
+            '2013-09-23 18:30:00',
+            array(
+                '2013-09-23 18:30:00',
+                '2013-09-30 18:30:00',
+                '2013-10-07 18:30:00',
+                '2013-10-14 18:30:00',
+                '2013-10-21 18:30:00',
+                '2013-10-28 18:30:00',
+                '2013-11-04 18:30:00',
+                '2013-11-11 18:30:00',
+                '2013-11-18 18:30:00',
+            ),
+            null,
+            'America/New_York'
+        );
+
+    }
+
+    function testUntilBeforeDtStart() {
+
+        $this->parse(
+            'FREQ=DAILY;UNTIL=20140101T000000Z',
+            '2014-08-02 00:15:00',
+            array(
+                '2014-08-02 00:15:00',
+            )
+        );
+
+    }
+
+    function testIgnoredStuff() {
+
+        $this->parse(
+            'FREQ=DAILY;BYSECOND=1;BYMINUTE=1;BYYEARDAY=1;BYWEEKNO=1;COUNT=2',
+            '2014-08-02 00:15:00',
+            array(
+                '2014-08-02 00:15:00',
+                '2014-08-03 00:15:00',
+            )
+        );
+
+    }
+
+    function testMinusFifthThursday() {
+
+        $this->parse(
+            'FREQ=MONTHLY;BYDAY=-4TH,-5TH;COUNT=4',
+            '2015-01-01 00:15:00',
+            array(
+                '2015-01-01 00:15:00',
+                '2015-01-08 00:15:00',
+                '2015-02-05 00:15:00',
+                '2015-03-05 00:15:00'
+            )
+        );
+
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    function testUnsupportedPart() {
+
+        $this->parse(
+            'FREQ=DAILY;BYWODAN=1',
+            '2014-08-02 00:15:00',
+            array()
+        );
+
+    }
+
+    function testIteratorFunctions() {
+
+        $parser = new RRuleIterator('FREQ=DAILY', new DateTime('2014-08-02 00:00:13'));
+        $parser->next();
+        $this->assertEquals(
+            new DateTime('2014-08-03 00:00:13'),
+            $parser->current()
+        );
+        $this->assertEquals(
+            1,
+            $parser->key()
+        );
+
+        $parser->rewind();
+
+        $this->assertEquals(
+            new DateTime('2014-08-02 00:00:13'),
+            $parser->current()
+        );
+        $this->assertEquals(
+            0,
+            $parser->key()
+        );
+
+    }
+
+    function parse($rule, $start, $expected, $fastForward = null, $tz = 'UTC') {
+
+        $dt = new DateTime($start, new DateTimeZone($tz));
+        $parser = new RRuleIterator($rule, $dt);
+
+        if ($fastForward) {
+            $parser->fastForward(new DateTime($fastForward));
+        }
+
+        $result = array();
+        while($parser->valid()) {
+
+            $item = $parser->current();
+            $result[] = $item->format('Y-m-d H:i:s');
+
+            if ($parser->isInfinite() && count($result) >= count($expected)) {
+                break;
+            }
+            $parser->next();
+
+        }
+
+        $this->assertEquals(
+            $expected,
+            $result
+        );
+
+    }
+
+}