diff --git a/tests/lib/Files/Node/FolderTest.php b/tests/lib/Files/Node/FolderTest.php
index c6c3761ebe398..1c873639f2d74 100644
--- a/tests/lib/Files/Node/FolderTest.php
+++ b/tests/lib/Files/Node/FolderTest.php
@@ -354,6 +354,8 @@ public function testSearchInRoot() {
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$cache->insert('files', ['size' => 200, 'mtime' => 55, 'mimetype' => ICacheEntry::DIRECTORY_MIMETYPE]);
 		$cache->insert('files/foo', ['size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']);
@@ -392,6 +394,8 @@ public function testSearchInStorageRoot() {
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$cache->insert('foo', ['size' => 200, 'mtime' => 55, 'mimetype' => ICacheEntry::DIRECTORY_MIMETYPE]);
 		$cache->insert('foo/qwerty', ['size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']);
@@ -443,9 +447,13 @@ public function testSearchSubStorages() {
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$subStorage->method('getCache')
 			->willReturn($subCache);
+		$subStorage->method('getOwner')
+			->willReturn('owner');
 
 		$cache->insert('foo', ['size' => 200, 'mtime' => 55, 'mimetype' => ICacheEntry::DIRECTORY_MIMETYPE]);
 		$cache->insert('foo/qwerty', ['size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']);
@@ -497,6 +505,8 @@ public function testGetById() {
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$this->userMountCache->expects($this->any())
 			->method('getMountsForFileId')
@@ -544,6 +554,8 @@ public function testGetByIdMountRoot() {
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$this->userMountCache->expects($this->any())
 			->method('getMountsForFileId')
@@ -587,6 +599,8 @@ public function testGetByIdOutsideFolder() {
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$this->userMountCache->expects($this->any())
 			->method('getMountsForFileId')
@@ -630,6 +644,8 @@ public function testGetByIdMultipleStorages() {
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$this->userMountCache->method('getMountsForFileId')
 			->with(1)
@@ -645,9 +661,6 @@ public function testGetByIdMultipleStorages() {
 				),
 			]);
 
-		$storage->method('getCache')
-			->willReturn($cache);
-
 		$cache->method('get')
 			->with(1)
 			->willReturn($fileInfo);
@@ -949,9 +962,13 @@ public function testSearchSubStoragesLimitOffset(int $offset, int $limit, array
 
 		$storage->method('getCache')
 			->willReturn($cache);
+		$storage->method('getOwner')
+			->willReturn('owner');
 
 		$subStorage1->method('getCache')
 			->willReturn($subCache1);
+		$subStorage1->method('getOwner')
+			->willReturn('owner');
 
 		$subMount2->method('getStorage')
 			->willReturn($subStorage2);
@@ -961,6 +978,8 @@ public function testSearchSubStoragesLimitOffset(int $offset, int $limit, array
 
 		$subStorage2->method('getCache')
 			->willReturn($subCache2);
+		$subStorage2->method('getOwner')
+			->willReturn('owner');
 
 		$cache->insert('foo/foo1', ['size' => 200, 'mtime' => 10, 'mimetype' => 'text/plain']);
 		$cache->insert('foo/foo2', ['size' => 200, 'mtime' => 20, 'mimetype' => 'text/plain']);