No duplicate calendars if shared with user and group and the user is …

…part of the group

apps/dav/lib/caldav/caldavbackend.php

@@ -172,7 +172,7 @@ function getCalendarsForUser($principalUri) {
 				$calendar[$xmlName] = $row[$dbName];
 			}
 
-			$calendars[] = $calendar;
+			$calendars[$calendar['id']] = $calendar;
 		}
 
 		$stmt->closeCursor();
@@ -223,12 +223,11 @@ function getCalendarsForUser($principalUri) {
 				$calendar[$xmlName] = $row[$dbName];
 			}
 
-			$calendars[]= $calendar;
+			$calendars[$calendar['id']] = $calendar;
 		}
 		$result->closeCursor();
 
-
-		return $calendars;
+		return array_values($calendars);
 	}
 
 	/**

apps/dav/tests/unit/caldav/caldavbackendtest.php

@@ -23,6 +23,7 @@
 use DateTime;
 use DateTimeZone;
 use OCA\DAV\CalDAV\CalDavBackend;
+use OCA\DAV\CalDAV\Calendar;
 use OCA\DAV\Connector\Sabre\Principal;
 use Sabre\CalDAV\Xml\Property\SupportedCalendarComponentSet;
 use Sabre\DAV\PropPatch;
@@ -44,19 +45,24 @@ class CalDavBackendTest extends TestCase {
 	/** @var Principal | \PHPUnit_Framework_MockObject_MockObject */
 	private $principal;
 
-	const UNIT_TEST_USER = 'caldav-unit-test';
+	const UNIT_TEST_USER = 'principals/users/caldav-unit-test';
+	const UNIT_TEST_USER1 = 'principals/users/caldav-unit-test1';
+	const UNIT_TEST_GROUP = 'principals/groups/caldav-unit-test-group';
 
 	public function setUp() {
 		parent::setUp();
 
 		$this->principal = $this->getMockBuilder('OCA\DAV\Connector\Sabre\Principal')
 			->disableOriginalConstructor()
-			->setMethods(['getPrincipalByPath'])
+			->setMethods(['getPrincipalByPath', 'getGroupMembership'])
 			->getMock();
 		$this->principal->method('getPrincipalByPath')
 			->willReturn([
 				'uri' => 'principals/best-friend'
 			]);
+		$this->principal->method('getGroupMembership')
+			->withAnyParameters()
+			->willReturn([self::UNIT_TEST_GROUP]);
 
 		$db = \OC::$server->getDatabaseConnection();
 		$this->backend = new CalDavBackend($db, $this->principal);
@@ -102,6 +108,29 @@ public function testCalendarOperations() {
 		$this->assertEquals(0, count($books));
 	}
 
+	public function testCalendarSharing() {
+
+		$this->createTestCalendar();
+		$books = $this->backend->getCalendarsForUser(self::UNIT_TEST_USER);
+		$this->assertEquals(1, count($books));
+		$calendar = new Calendar($this->backend, $books[0]);
+		$this->backend->updateShares($calendar, [
+			[
+				'href' => 'principal:' . self::UNIT_TEST_USER1,
+			],
+			[
+				'href' => 'principal:' . self::UNIT_TEST_GROUP,
+			]
+		], []);
+		$books = $this->backend->getCalendarsForUser(self::UNIT_TEST_USER1);
+		$this->assertEquals(1, count($books));
+
+		// delete the address book
+		$this->backend->deleteCalendar($books[0]['id']);
+		$books = $this->backend->getCalendarsForUser(self::UNIT_TEST_USER);
+		$this->assertEquals(0, count($books));
+	}
+
 	public function testCalendarObjectsOperations() {
 
 		$calendarId = $this->createTestCalendar();