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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.calendarserver.org//changeset/13942">13942</a></dd>
<dt>Author</dt> <dd>cdaboo@apple.com</dd>
<dt>Date</dt> <dd>2014-09-05 13:35:08 -0700 (Fri, 05 Sep 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Fix issue with group reconciliation when an attendee is removed as a member of one group but is still a member of another.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#CalendarServertrunktwistedcaldavicalpy">CalendarServer/trunk/twistedcaldav/ical.py</a></li>
<li><a href="#CalendarServertrunktwistedcaldavtesttest_icalendarpy">CalendarServer/trunk/twistedcaldav/test/test_icalendar.py</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="CalendarServertrunktwistedcaldavicalpy"></a>
<div class="modfile"><h4>Modified: CalendarServer/trunk/twistedcaldav/ical.py (13941 => 13942)</h4>
<pre class="diff"><span>
<span class="info">--- CalendarServer/trunk/twistedcaldav/ical.py        2014-09-05 20:25:47 UTC (rev 13941)
+++ CalendarServer/trunk/twistedcaldav/ical.py        2014-09-05 20:35:08 UTC (rev 13942)
</span><span class="lines">@@ -3501,16 +3501,16 @@
</span><span class="cx">             # remove attendee or update MEMBER attribute for non-primary attendees in this group,
</span><span class="cx">             for attendeeProp in oldAttendeeProps:
</span><span class="cx">                 if attendeeProp.hasParameter(&quot;MEMBER&quot;):
</span><del>-                    parameterValues = tuple(attendeeProp.parameterValues(&quot;MEMBER&quot;))
-                    if groupCUA in parameterValues:
</del><ins>+                    memberValues = attendeeProp.parameterValues(&quot;MEMBER&quot;)
+                    if groupCUA in tuple(memberValues):
</ins><span class="cx">                         if attendeeProp.value() not in memberCUAs:
</span><del>-                            attendeeProp.removeParameterValue(&quot;MEMBER&quot;, groupCUA)
-                            if not attendeeProp.parameterValues(&quot;MEMBER&quot;):
</del><ins>+                            memberValues.remove(groupCUA)
+                            if len(memberValues) == 0:
</ins><span class="cx">                                 component.removeProperty(attendeeProp)
</span><span class="cx">                             changed = True
</span><span class="cx">                     else:
</span><span class="cx">                         if attendeeProp.value() in memberCUAs:
</span><del>-                            attendeeProp.setParameter(&quot;MEMBER&quot;, parameterValues + (groupCUA,))
</del><ins>+                            memberValues.append(groupCUA)
</ins><span class="cx">                             changed = True
</span><span class="cx"> 
</span><span class="cx">         return changed
</span><span class="lines">@@ -3537,10 +3537,10 @@
</span><span class="cx">                     attendeeCUA = attendeeProp.value()
</span><span class="cx">                     if attendeeCUA in allMemberCUAs:
</span><span class="cx">                         # remove orphan member values
</span><del>-                        parameterValues = tuple(attendeeProp.parameterValues(&quot;MEMBER&quot;))
-                        for orphanGroupCUA in set(parameterValues) - nonemptyGroupCUAs:
-                            attendeeProp.removeParameterValue(&quot;MEMBER&quot;, orphanGroupCUA)
-                            if not attendeeProp.parameterValues(&quot;MEMBER&quot;):
</del><ins>+                        memberValues = attendeeProp.parameterValues(&quot;MEMBER&quot;)
+                        for orphanGroupCUA in set(memberValues) - nonemptyGroupCUAs:
+                            memberValues.remove(orphanGroupCUA)
+                            if len(memberValues) == 0:
</ins><span class="cx">                                 component.removeProperty(attendeeProp)
</span><span class="cx">                             changed = True
</span><span class="cx">                     else:
</span></span></pre></div>
<a id="CalendarServertrunktwistedcaldavtesttest_icalendarpy"></a>
<div class="modfile"><h4>Modified: CalendarServer/trunk/twistedcaldav/test/test_icalendar.py (13941 => 13942)</h4>
<pre class="diff"><span>
<span class="info">--- CalendarServer/trunk/twistedcaldav/test/test_icalendar.py        2014-09-05 20:25:47 UTC (rev 13941)
+++ CalendarServer/trunk/twistedcaldav/test/test_icalendar.py        2014-09-05 20:35:08 UTC (rev 13942)
</span><span class="lines">@@ -23,7 +23,7 @@
</span><span class="cx"> 
</span><span class="cx"> from twistedcaldav.dateops import normalizeForExpand
</span><span class="cx"> from twistedcaldav.ical import Component, Property, InvalidICalendarDataError, \
</span><del>-    normalizeCUAddress, normalize_iCalStr
</del><ins>+    normalizeCUAddress, normalize_iCalStr, diff_iCalStrs
</ins><span class="cx"> from twistedcaldav.ical import iCalendarProductID
</span><span class="cx"> from twistedcaldav.instance import InvalidOverriddenInstanceError
</span><span class="cx"> import twistedcaldav.test.util
</span><span class="lines">@@ -11082,3 +11082,470 @@
</span><span class="cx">             component = Component.fromString(txt).mainComponent()
</span><span class="cx">             transp = component.adjustedTransp()
</span><span class="cx">             self.assertEqual(transp, result, msg=title)
</span><ins>+
+
+    def test_reconcileGroupAttendees(self):
+        &quot;&quot;&quot;
+        reconcileGroupAttendees()
+        &quot;&quot;&quot;
+
+        data = (
+            (
+                &quot;No change&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {},
+                False,
+            ),
+            (
+                &quot;Empty group&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {&quot;urn:uuid:group01&quot;: ()},
+                False,
+            ),
+            (
+                &quot;One new member&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {
+                    &quot;urn:uuid:group01&quot;: (
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user03@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                    )
+                },
+                True,
+            ),
+            (
+                &quot;One existing member&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {
+                    &quot;urn:uuid:group01&quot;: (
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user03@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                    )
+                },
+                False,
+            ),
+            (
+                &quot;One removed member&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {&quot;urn:uuid:group01&quot;: ()},
+                True,
+            ),
+            (
+                &quot;Two members: one existing, one new&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user04@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {
+                    &quot;urn:uuid:group01&quot;: (
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user03@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user04@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                    )
+                },
+                True,
+            ),
+            (
+                &quot;Two existing members&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user04@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user04@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {
+                    &quot;urn:uuid:group01&quot;: (
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user03@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user04@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                    )
+                },
+                False,
+            ),
+            (
+                &quot;One existing, one removed member&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user04@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group01
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user04@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {
+                    &quot;urn:uuid:group01&quot;: (
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user04@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                    )
+                },
+                True,
+            ),
+            (
+                &quot;Member with removed group&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {},
+                True,
+            ),
+            (
+                &quot;Member with removed group added to another&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group02
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group02
+ATTENDEE;MEMBER=&quot;urn:uuid:group02&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {
+                    &quot;urn:uuid:group02&quot;: (
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user03@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                    )
+                },
+                True,
+            ),
+            (
+                &quot;Member with removed group in another&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group02
+ATTENDEE;MEMBER=&quot;urn:uuid:group01&quot;,&quot;urn:uuid:group02&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                &quot;&quot;&quot;BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//CALENDARSERVER.ORG//NONSGML Version 1//EN
+BEGIN:VEVENT
+UID:12345-67890
+DTSTART;VALUE=DATE:20080601
+DURATION:PT1H
+DTSTAMP:20080601T120000Z
+ATTENDEE:mailto:user01@example.com
+ATTENDEE:mailto:user02@example.com
+ATTENDEE;CUTYPE=X-SERVER-GROUP:urn:uuid:group02
+ATTENDEE;MEMBER=&quot;urn:uuid:group02&quot;:mailto:user03@example.com
+ORGANIZER:mailto:user01@example.com
+SUMMARY:Test
+END:VEVENT
+END:VCALENDAR
+&quot;&quot;&quot;,
+                {
+                    &quot;urn:uuid:group02&quot;: (
+                        Property(&quot;ATTENDEE&quot;, &quot;mailto:user03@example.com&quot;, {&quot;MEMBER&quot;: &quot;urn:uuid:group01&quot;}),
+                    )
+                },
+                True,
+            ),
+        )
+
+        for title, txt, txt_result, propMap, changed in data:
+            cal = Component.fromString(txt)
+            result = cal.reconcileGroupAttendees(propMap)
+            self.assertEqual(result, changed, msg=&quot;{}: {}&quot;.format(title, &quot;Result mismatch&quot;))
+            self.assertEqual(normalize_iCalStr(cal), normalize_iCalStr(txt_result), msg=&quot;{}:{}&quot;.format(title, diff_iCalStrs(cal, txt_result)))
</ins></span></pre>
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