MDL-66871 calendar: add unit test coverage for ics importing

calendar/tests/lib_test.php

@@ -227,6 +227,24 @@ public function test_add_subscription() {
         calendar_import_icalendar_events($ical, null, $sub->id);
         $count = $DB->count_records('event', array('subscriptionid' => $sub->id));
         $this->assertEquals($count, 1);
+
+        // Test for ICS file with repeated events.
+        $subscription = new stdClass();
+        $subscription->name = 'Repeated events';
+        $subscription->importfrom = CALENDAR_IMPORT_FROM_FILE;
+        $subscription->eventtype = 'site';
+        $id = calendar_add_subscription($subscription);
+        $calendar = file_get_contents($CFG->dirroot . '/lib/tests/fixtures/repeated_events.ics');
+        $ical = new iCalendar();
+        $ical->unserialize($calendar);
+        $this->assertEquals($ical->parser_errors, []);
+
+        $sub = calendar_get_subscription($id);
+        $output = calendar_import_icalendar_events($ical, null, $sub->id);
+        $this->assertStringNotContainsString('Events deleted: 17', $output);
+        $this->assertStringContainsString('Events imported: 1', $output);
+        $this->assertStringContainsString('Events skipped: 0', $output);
+        $this->assertStringContainsString('Events updated: 0', $output);
     }
 
     /**

lib/tests/fixtures/repeated_events.ics

@@ -0,0 +1,34 @@
+BEGIN:VCALENDAR
+PRODID:QIS-LSF HIS eG
+VERSION:2.0
+BEGIN:VTIMEZONE
+TZID:Europe/Berlin
+X-LIC-LOCATION:Europe/Berlin
+BEGIN:DAYLIGHT
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+TZNAME:CEST
+DTSTART:19700329T020000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+TZNAME:CET
+DTSTART:19701025T030000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
+END:STANDARD
+END:VTIMEZONE
+METHOD:PUBLISH
+BEGIN:VEVENT
+DTSTART;TZID=Europe/Berlin:20191015T160000
+DTEND;TZID=Europe/Berlin:20191015T180000
+RRULE:FREQ=WEEKLY;UNTIL=20200211T235900Z;INTERVAL=1;BYDAY=TU
+LOCATION:O27 - 122
+DTSTAMP:20191002T151421Z
+UID:115808212972
+DESCRIPTION:
+SUMMARY:CS6307.000 - Introduction to Computer Science (for Non-Computer Scientists)
+CATEGORIES:Vorlesung/ Übung
+END:VEVENT
+END:VCALENDAR