Fix Metadata tests

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

tests/lib/Group/MetaDataTest.php

@@ -53,13 +53,20 @@ class MetaDataTest extends \Test\TestCase {
 			->disableOriginalConstructor()
 			->getMock();
 
-		$group->expects($this->exactly(9))
+		$group->expects($this->exactly(6))
 			->method('getGID')
 			->will($this->onConsecutiveCalls(
 				'admin', 'admin', 'admin',
 				'g2', 'g2', 'g2',
 				'g3', 'g3', 'g3'));
 
+		$group->expects($this->exactly(3))
+			->method('getDisplayName')
+			->will($this->onConsecutiveCalls(
+				'admin',
+				'g2',
+				'g3'));
+
 		$group->expects($this->exactly($countCallCount))
 			->method('count')
 			->with('')