--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/sabre/vobject/tests/VObject/ITip/BrokerTester.php	Sat Jan 13 09:06:10 2018 -0500
@@ -0,0 +1,103 @@
+<?php
+
+namespace Sabre\VObject\ITip;
+
+use Sabre\VObject\Reader;
+
+/**
+ * Utilities for testing the broker
+ * 
+ * @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/) 
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+abstract class BrokerTester extends \PHPUnit_Framework_TestCase {
+
+    function parse($oldMessage, $newMessage, $expected = array(), $currentUser = 'mailto:one@example.org') {
+
+        $broker = new Broker();
+        $result = $broker->parseEvent($newMessage, $currentUser, $oldMessage);
+
+        $this->assertEquals(count($expected), count($result));
+
+        foreach($expected as $index=>$ex) {
+
+            $message = $result[$index];
+
+            foreach($ex as $key=>$val) {
+
+                if ($key==='message') {
+                    $this->assertEquals(
+                        str_replace("\n", "\r\n", $val),
+                        rtrim($message->message->serialize(), "\r\n")
+                    );
+                } else {
+                    $this->assertEquals($val, $message->$key);
+                }
+
+            }
+
+        }
+
+    }
+
+    function process($input, $existingObject = null, $expected = false) {
+
+        $version = \Sabre\VObject\Version::VERSION;
+
+        $vcal = Reader::read($input);
+
+        foreach($vcal->getComponents() as $mainComponent) {
+            break;
+        }
+
+        $message = new Message();
+        $message->message = $vcal;
+        $message->method = isset($vcal->METHOD)?$vcal->METHOD->getValue():null;
+        $message->component = $mainComponent->name;
+        $message->uid = $mainComponent->uid->getValue();
+        $message->sequence = isset($vcal->VEVENT[0])?(string)$vcal->VEVENT[0]->SEQUENCE:null;
+
+        if ($message->method === 'REPLY') {
+
+            $message->sender = $mainComponent->ATTENDEE->getValue();
+            $message->senderName = isset($mainComponent->ATTENDEE['CN'])?$mainComponent->ATTENDEE['CN']->getValue():null;
+            $message->recipient = $mainComponent->ORGANIZER->getValue();
+            $message->recipientName = isset($mainComponent->ORGANIZER['CN'])?$mainComponent->ORGANIZER['CN']:null;
+
+        }
+
+        $broker = new Broker();
+
+        if (is_string($existingObject)) {
+            $existingObject = str_replace(
+                '%foo%',
+                "VERSION:2.0\nPRODID:-//Sabre//Sabre VObject $version//EN\nCALSCALE:GREGORIAN",
+                $existingObject
+            );
+            $existingObject = Reader::read($existingObject);
+        }
+
+        $result = $broker->processMessage($message, $existingObject);
+
+        if (is_string($expected)) {
+            $expected = str_replace(
+                '%foo%',
+                "VERSION:2.0\nPRODID:-//Sabre//Sabre VObject $version//EN\nCALSCALE:GREGORIAN",
+                $expected
+            );
+            $expected = str_replace("\n", "\r\n", $expected);
+
+        }
+        if ($result instanceof \Sabre\VObject\Component\VCalendar) {
+            $result = $result->serialize();
+            $result = rtrim($result,"\r\n");
+        }
+
+        $this->assertEquals(
+            $expected,
+            $result
+        );
+
+    }
+}