--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/sabre/vobject/tests/VObject/Property/ICalendar/DurationTest.php	Sat Jan 13 09:06:10 2018 -0500
@@ -0,0 +1,20 @@
+<?php
+
+namespace Sabre\VObject\Property\ICalendar;
+
+use Sabre\VObject\Component\VCalendar;
+use Sabre\VObject\Component\VEvent;
+
+class DurationTest extends \PHPUnit_Framework_TestCase {
+
+    function testGetDateInterval() {
+
+        $vcal = new VCalendar();
+        $event = $vcal->add('VEVENT', array('DURATION' => array('PT1H')));
+
+        $this->assertEquals(
+            new \DateInterval('PT1H'),
+            $event->{'DURATION'}->getDateInterval()
+        );
+    }
+}