fix credentialsManager documentation and ensure userId to be used as string

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/lib/Security/CredentialsManagerTest.php b/tests/lib/Security/CredentialsManagerTest.php
index b5d4116b293..9c1a0cb9291 100644
--- a/tests/lib/Security/CredentialsManagerTest.php
+++ b/tests/lib/Security/CredentialsManagerTest.php
@@ -134,9 +134,9 @@ class CredentialsManagerTest extends \Test\TestCase {
 				'privateCredentials'
 			],
 			[
-				null,
-				'systemCredentials'
-			]
+				'',
+				'systemCredentials',
+			],
 		];
 	}
 }