--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/sabre/vobject/tests/VObject/Recur/RRuleIteratorTest.php	Sat Jan 13 09:06:10 2018 -0500
@@ -0,0 +1,698 @@
+<?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',
+            )
+        );
+
+    }
+
+    /**
+     * @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
+        );
+
+    }
+
+}