diff --git a/tests/lib/Files/Storage/Storage.php b/tests/lib/Files/Storage/Storage.php
index 9107d99cd6738..16de3c851230e 100644
--- a/tests/lib/Files/Storage/Storage.php
+++ b/tests/lib/Files/Storage/Storage.php
@@ -116,6 +116,10 @@ public static function fileNameProvider(): array {
 			['file with space.txt'],
 			['spéciäl fäile'],
 			['test single\'quote.txt'],
+			['0'],
+			['#'],
+			['%'],
+			['%20'],
 		];
 	}
 
@@ -127,6 +131,10 @@ public static function directoryProvider(): array {
 			['folder with space'],
 			['spéciäl földer'],
 			['test single\'quote'],
+			['0'],
+			['#'],
+			['%'],
+			['%20']
 		];
 	}