createComponent('VEVENT'); $this->assertInstanceOf('Sabre\VObject\Component\VEvent', $event); $vcal->add($event); $prop = $vcal->createProperty('X-PROP','1234256',array('X-PARAM' => '3')); $this->assertInstanceOf('Sabre\VObject\Property', $prop); $event->add($prop); $out = $vcal->serialize(); $this->assertEquals("BEGIN:VCALENDAR\r\nBEGIN:VEVENT\r\nX-PROP;X-PARAM=3:1234256\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n", $out); } }